./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 ae007674 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-dev-ae00767 [2021-12-28 03:57:30,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:57:30,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:57:30,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:57:30,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:57:30,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:57:30,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:57:30,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:57:30,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:57:30,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:57:30,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:57:30,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:57:30,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:57:30,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:57:30,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:57:30,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:57:30,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:57:30,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:57:30,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:57:30,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:57:30,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:57:30,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:57:30,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:57:31,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:57:31,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:57:31,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:57:31,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:57:31,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:57:31,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:57:31,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:57:31,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:57:31,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:57:31,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:57:31,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:57:31,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:57:31,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:57:31,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:57:31,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:57:31,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:57:31,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:57:31,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:57:31,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:57:31,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:57:31,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:57:31,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:57:31,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:57:31,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:57:31,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:57:31,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:57:31,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:57:31,052 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:57:31,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:57:31,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:57:31,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:57:31,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:57:31,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:57:31,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:57:31,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:57:31,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:57:31,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:57:31,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:57:31,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:57:31,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:57:31,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:57:31,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:57:31,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:57:31,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:57:31,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:57:31,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:57:31,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:57:31,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:57:31,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:57:31,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-12-28 03:57:31,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:57:31,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:57:31,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:57:31,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:57:31,352 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:57:31,353 INFO L432 ainManager$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 [2021-12-28 03:57:31,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6161e96b9/71f43104abfb46b8aa1e626435ee0352/FLAG25921f491 [2021-12-28 03:57:31,986 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:57:31,987 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 [2021-12-28 03:57:32,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6161e96b9/71f43104abfb46b8aa1e626435ee0352/FLAG25921f491 [2021-12-28 03:57:32,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6161e96b9/71f43104abfb46b8aa1e626435ee0352 [2021-12-28 03:57:32,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:57:32,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:57:32,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:57:32,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:57:32,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:57:32,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:57:32" (1/1) ... [2021-12-28 03:57:32,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afc519e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:32, skipping insertion in model container [2021-12-28 03:57:32,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:57:32" (1/1) ... [2021-12-28 03:57:32,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:57:32,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:57:33,366 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] [2021-12-28 03:57:34,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:57:34,056 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:57:34,164 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] [2021-12-28 03:57:34,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:57:34,404 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:57:34,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34 WrapperNode [2021-12-28 03:57:34,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:57:34,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:57:34,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:57:34,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:57:34,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,733 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6424 [2021-12-28 03:57:34,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:57:34,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:57:34,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:57:34,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:57:34,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:34,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:35,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:57:35,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:57:35,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:57:35,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:57:35,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (1/1) ... [2021-12-28 03:57:35,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:57:35,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:57:35,071 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) [2021-12-28 03:57:35,120 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 [2021-12-28 03:57:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2021-12-28 03:57:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2021-12-28 03:57:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-12-28 03:57:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-12-28 03:57:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-28 03:57:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-28 03:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-12-28 03:57:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-12-28 03:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-28 03:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-12-28 03:57:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-12-28 03:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:57:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:57:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-28 03:57:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-28 03:57:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-28 03:57:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-28 03:57:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-12-28 03:57:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-12-28 03:57:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-12-28 03:57:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-12-28 03:57:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-12-28 03:57:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-12-28 03:57:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-12-28 03:57:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-12-28 03:57:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-28 03:57:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-28 03:57:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-28 03:57:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-28 03:57:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 03:57:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 03:57:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:57:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:57:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-12-28 03:57:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-12-28 03:57:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-12-28 03:57:35,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-12-28 03:57:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-28 03:57:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-28 03:57:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-12-28 03:57:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-12-28 03:57:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:57:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:57:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-12-28 03:57:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-12-28 03:57:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:57:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:57:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-12-28 03:57:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-12-28 03:57:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:57:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:57:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:57:35,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:57:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-12-28 03:57:35,150 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-12-28 03:57:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:57:35,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:57:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 03:57:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 03:57:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:57:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:57:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-12-28 03:57:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-12-28 03:57:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2021-12-28 03:57:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2021-12-28 03:57:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-12-28 03:57:35,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-12-28 03:57:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-12-28 03:57:35,153 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-12-28 03:57:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:57:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:57:35,153 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:57:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-12-28 03:57:35,154 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-12-28 03:57:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-28 03:57:35,154 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-28 03:57:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:57:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-28 03:57:35,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-28 03:57:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2021-12-28 03:57:35,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2021-12-28 03:57:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-28 03:57:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-28 03:57:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-28 03:57:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-28 03:57:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-12-28 03:57:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-12-28 03:57:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 03:57:35,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 03:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2021-12-28 03:57:35,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2021-12-28 03:57:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-12-28 03:57:35,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-12-28 03:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:57:35,157 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:57:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-28 03:57:35,158 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-28 03:57:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2021-12-28 03:57:35,158 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2021-12-28 03:57:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:57:35,158 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:57:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 03:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 03:57:35,159 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-12-28 03:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-12-28 03:57:35,159 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 03:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 03:57:35,159 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 03:57:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 03:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 03:57:35,160 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 03:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-12-28 03:57:35,160 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-12-28 03:57:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-12-28 03:57:35,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-12-28 03:57:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 03:57:35,162 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 03:57:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-28 03:57:35,163 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-28 03:57:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:57:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:57:35,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:57:35,164 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:57:35,164 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:57:35,165 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-12-28 03:57:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-12-28 03:57:35,169 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 03:57:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 03:57:35,169 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-12-28 03:57:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-12-28 03:57:35,169 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2021-12-28 03:57:35,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2021-12-28 03:57:35,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:57:35,169 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-12-28 03:57:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-12-28 03:57:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-28 03:57:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-28 03:57:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:57:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 03:57:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 03:57:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-12-28 03:57:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-12-28 03:57:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-12-28 03:57:35,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-12-28 03:57:35,170 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-12-28 03:57:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-12-28 03:57:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-28 03:57:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-28 03:57:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-28 03:57:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-28 03:57:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2021-12-28 03:57:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2021-12-28 03:57:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2021-12-28 03:57:35,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2021-12-28 03:57:35,171 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-12-28 03:57:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-12-28 03:57:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-12-28 03:57:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-12-28 03:57:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2021-12-28 03:57:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2021-12-28 03:57:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-12-28 03:57:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-12-28 03:57:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-12-28 03:57:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-12-28 03:57:35,172 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-12-28 03:57:35,172 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-12-28 03:57:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-28 03:57:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-28 03:57:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:57:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:57:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-12-28 03:57:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-12-28 03:57:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2021-12-28 03:57:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2021-12-28 03:57:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-12-28 03:57:35,173 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-12-28 03:57:35,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:57:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 03:57:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 03:57:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-28 03:57:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-28 03:57:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-12-28 03:57:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-12-28 03:57:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2021-12-28 03:57:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2021-12-28 03:57:35,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:57:35,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-12-28 03:57:35,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-12-28 03:57:35,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-28 03:57:35,175 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-28 03:57:35,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:57:35,175 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-28 03:57:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-28 03:57:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:57:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-28 03:57:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-28 03:57:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:57:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-28 03:57:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-28 03:57:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:57:35,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:57:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-28 03:57:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-28 03:57:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-28 03:57:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-28 03:57:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-12-28 03:57:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-12-28 03:57:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-28 03:57:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-28 03:57:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 03:57:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 03:57:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-28 03:57:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-28 03:57:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-12-28 03:57:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-12-28 03:57:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-28 03:57:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-28 03:57:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-28 03:57:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-28 03:57:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-28 03:57:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-28 03:57:35,178 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2021-12-28 03:57:35,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2021-12-28 03:57:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-28 03:57:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-28 03:57:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-12-28 03:57:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-12-28 03:57:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-12-28 03:57:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-12-28 03:57:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:57:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:57:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-12-28 03:57:35,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-12-28 03:57:35,179 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-12-28 03:57:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-12-28 03:57:35,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2021-12-28 03:57:35,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2021-12-28 03:57:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-12-28 03:57:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-12-28 03:57:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:57:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-12-28 03:57:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-12-28 03:57:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-28 03:57:35,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-28 03:57:35,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:57:35,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:57:35,184 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:57:35,185 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:57:35,185 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-28 03:57:35,185 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-28 03:57:35,871 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:57:35,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:57:36,188 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:57:38,374 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:57:38,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:57:38,409 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 03:57:38,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:57:38 BoogieIcfgContainer [2021-12-28 03:57:38,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:57:38,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:57:38,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:57:38,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:57:38,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:57:32" (1/3) ... [2021-12-28 03:57:38,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40d35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:57:38, skipping insertion in model container [2021-12-28 03:57:38,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:57:34" (2/3) ... [2021-12-28 03:57:38,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40d35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:57:38, skipping insertion in model container [2021-12-28 03:57:38,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:57:38" (3/3) ... [2021-12-28 03:57:38,417 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 [2021-12-28 03:57:38,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:57:38,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:57:38,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:57:38,460 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 [2021-12-28 03:57:38,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:57:38,500 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) [2021-12-28 03:57:38,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 03:57:38,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:57:38,509 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] [2021-12-28 03:57:38,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:57:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:57:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1166428172, now seen corresponding path program 1 times [2021-12-28 03:57:38,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:57:38,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593825332] [2021-12-28 03:57:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:57:38,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:57:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:57:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:57:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:57:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:57:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:57:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:57:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:57:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:57:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:57:39,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:57:39,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593825332] [2021-12-28 03:57:39,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593825332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:57:39,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:57:39,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:57:39,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700655772] [2021-12-28 03:57:39,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:57:39,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:57:39,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:57:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:57:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:57:39,111 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) [2021-12-28 03:57:46,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:57:46,038 INFO L93 Difference]: Finished difference Result 7078 states and 10935 transitions. [2021-12-28 03:57:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:57:46,040 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 [2021-12-28 03:57:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:57:46,152 INFO L225 Difference]: With dead ends: 7078 [2021-12-28 03:57:46,152 INFO L226 Difference]: Without dead ends: 4873 [2021-12-28 03:57:46,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:57:46,169 INFO L933 BasicCegarLoop]: 3721 mSDtfsCounter, 4508 mSDsluCounter, 8960 mSDsCounter, 0 mSdLazyCounter, 5961 mSolverCounterSat, 1600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4879 SdHoareTripleChecker+Valid, 12681 SdHoareTripleChecker+Invalid, 7561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1600 IncrementalHoareTripleChecker+Valid, 5961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:57:46,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4879 Valid, 12681 Invalid, 7561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1600 Valid, 5961 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-12-28 03:57:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2021-12-28 03:57:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4383. [2021-12-28 03:57:46,389 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) [2021-12-28 03:57:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6455 transitions. [2021-12-28 03:57:46,419 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6455 transitions. Word has length 69 [2021-12-28 03:57:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:57:46,420 INFO L470 AbstractCegarLoop]: Abstraction has 4383 states and 6455 transitions. [2021-12-28 03:57:46,420 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) [2021-12-28 03:57:46,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6455 transitions. [2021-12-28 03:57:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-28 03:57:46,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:57:46,435 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] [2021-12-28 03:57:46,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:57:46,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:57:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:57:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1147589655, now seen corresponding path program 1 times [2021-12-28 03:57:46,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:57:46,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927530381] [2021-12-28 03:57:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:57:46,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:57:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:57:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:57:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:57:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:57:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:57:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:57:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:57:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:57:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:57:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:57:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:57:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:57:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:57:46,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:57:46,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927530381] [2021-12-28 03:57:46,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927530381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:57:46,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:57:46,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:57:46,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940827860] [2021-12-28 03:57:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:57:46,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:57:46,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:57:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:57:46,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:57:46,695 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) [2021-12-28 03:57:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:57:56,486 INFO L93 Difference]: Finished difference Result 14573 states and 22266 transitions. [2021-12-28 03:57:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:57:56,487 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 [2021-12-28 03:57:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:57:56,544 INFO L225 Difference]: With dead ends: 14573 [2021-12-28 03:57:56,545 INFO L226 Difference]: Without dead ends: 10210 [2021-12-28 03:57:56,558 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 [2021-12-28 03:57:56,559 INFO L933 BasicCegarLoop]: 3697 mSDtfsCounter, 6511 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 5028 mSolverCounterSat, 3337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6847 SdHoareTripleChecker+Valid, 8634 SdHoareTripleChecker+Invalid, 8365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3337 IncrementalHoareTripleChecker+Valid, 5028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:57:56,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6847 Valid, 8634 Invalid, 8365 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3337 Valid, 5028 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2021-12-28 03:57:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-12-28 03:57:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 8739. [2021-12-28 03:57:56,874 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) [2021-12-28 03:57:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 13154 transitions. [2021-12-28 03:57:56,911 INFO L78 Accepts]: Start accepts. Automaton has 8739 states and 13154 transitions. Word has length 105 [2021-12-28 03:57:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:57:56,913 INFO L470 AbstractCegarLoop]: Abstraction has 8739 states and 13154 transitions. [2021-12-28 03:57:56,914 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) [2021-12-28 03:57:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8739 states and 13154 transitions. [2021-12-28 03:57:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 03:57:56,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:57:56,920 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] [2021-12-28 03:57:56,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:57:56,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:57:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:57:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1215083750, now seen corresponding path program 1 times [2021-12-28 03:57:56,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:57:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907518732] [2021-12-28 03:57:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:57:56,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:57:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:57:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:57:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:57:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:57:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:57:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:57:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:57:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:57:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:57:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:57:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:57:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:57:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:57:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-28 03:57:57,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:57:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907518732] [2021-12-28 03:57:57,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907518732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:57:57,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:57:57,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:57:57,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227886753] [2021-12-28 03:57:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:57:57,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:57:57,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:57:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:57:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:57:57,190 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) [2021-12-28 03:58:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:58:08,758 INFO L93 Difference]: Finished difference Result 25654 states and 39179 transitions. [2021-12-28 03:58:08,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:58:08,758 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 [2021-12-28 03:58:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:58:08,850 INFO L225 Difference]: With dead ends: 25654 [2021-12-28 03:58:08,851 INFO L226 Difference]: Without dead ends: 16935 [2021-12-28 03:58:08,893 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 [2021-12-28 03:58:08,895 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 3101 mSDsluCounter, 7454 mSDsCounter, 0 mSdLazyCounter, 6327 mSolverCounterSat, 1125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 12036 SdHoareTripleChecker+Invalid, 7452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1125 IncrementalHoareTripleChecker+Valid, 6327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:58:08,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3382 Valid, 12036 Invalid, 7452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1125 Valid, 6327 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2021-12-28 03:58:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16935 states. [2021-12-28 03:58:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16935 to 14784. [2021-12-28 03:58:09,384 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) [2021-12-28 03:58:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22087 transitions. [2021-12-28 03:58:09,440 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22087 transitions. Word has length 108 [2021-12-28 03:58:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:58:09,441 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22087 transitions. [2021-12-28 03:58:09,441 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) [2021-12-28 03:58:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22087 transitions. [2021-12-28 03:58:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-28 03:58:09,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:58:09,449 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] [2021-12-28 03:58:09,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:58:09,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:58:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:58:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1577830905, now seen corresponding path program 1 times [2021-12-28 03:58:09,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:58:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819164633] [2021-12-28 03:58:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:58:09,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:58:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:58:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:58:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:58:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:58:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:58:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:58:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:58:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:58:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:58:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:58:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:58:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:58:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:58:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-28 03:58:09,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:58:09,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819164633] [2021-12-28 03:58:09,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819164633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:58:09,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:58:09,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:58:09,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083211704] [2021-12-28 03:58:09,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:58:09,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:58:09,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:58:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:58:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:58:09,688 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) [2021-12-28 03:58:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:58:15,860 INFO L93 Difference]: Finished difference Result 31679 states and 48084 transitions. [2021-12-28 03:58:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:58:15,860 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 [2021-12-28 03:58:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:58:15,994 INFO L225 Difference]: With dead ends: 31679 [2021-12-28 03:58:15,994 INFO L226 Difference]: Without dead ends: 16915 [2021-12-28 03:58:16,048 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 [2021-12-28 03:58:16,049 INFO L933 BasicCegarLoop]: 2909 mSDtfsCounter, 3780 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 1054 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:58:16,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4100 Valid, 6466 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1054 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-28 03:58:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2021-12-28 03:58:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 14784. [2021-12-28 03:58:16,716 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) [2021-12-28 03:58:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22079 transitions. [2021-12-28 03:58:16,776 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22079 transitions. Word has length 142 [2021-12-28 03:58:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:58:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22079 transitions. [2021-12-28 03:58:16,777 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) [2021-12-28 03:58:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22079 transitions. [2021-12-28 03:58:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 03:58:16,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:58:16,783 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] [2021-12-28 03:58:16,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:58:16,784 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:58:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:58:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash 179241227, now seen corresponding path program 1 times [2021-12-28 03:58:16,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:58:16,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676722305] [2021-12-28 03:58:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:58:16,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:58:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:58:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:58:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:58:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:58:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:58:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:58:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:58:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:58:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:58:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:58:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:58:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:58:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:58:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:58:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-28 03:58:17,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:58:17,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676722305] [2021-12-28 03:58:17,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676722305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:58:17,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:58:17,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:58:17,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592861409] [2021-12-28 03:58:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:58:17,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:58:17,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:58:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:58:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:58:17,022 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) [2021-12-28 03:58:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:58:27,822 INFO L93 Difference]: Finished difference Result 39062 states and 59398 transitions. [2021-12-28 03:58:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:58:27,823 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 [2021-12-28 03:58:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:58:27,952 INFO L225 Difference]: With dead ends: 39062 [2021-12-28 03:58:27,952 INFO L226 Difference]: Without dead ends: 24298 [2021-12-28 03:58:28,010 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 [2021-12-28 03:58:28,011 INFO L933 BasicCegarLoop]: 3950 mSDtfsCounter, 3488 mSDsluCounter, 6481 mSDsCounter, 0 mSdLazyCounter, 5641 mSolverCounterSat, 1327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3767 SdHoareTripleChecker+Valid, 10431 SdHoareTripleChecker+Invalid, 6968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1327 IncrementalHoareTripleChecker+Valid, 5641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:58:28,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3767 Valid, 10431 Invalid, 6968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1327 Valid, 5641 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2021-12-28 03:58:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24298 states. [2021-12-28 03:58:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24298 to 21097. [2021-12-28 03:58:28,868 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) [2021-12-28 03:58:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21097 states to 21097 states and 31398 transitions. [2021-12-28 03:58:28,952 INFO L78 Accepts]: Start accepts. Automaton has 21097 states and 31398 transitions. Word has length 149 [2021-12-28 03:58:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:58:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 21097 states and 31398 transitions. [2021-12-28 03:58:28,954 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) [2021-12-28 03:58:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 21097 states and 31398 transitions. [2021-12-28 03:58:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 03:58:28,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:58:28,958 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] [2021-12-28 03:58:28,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:58:28,958 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:58:28,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:58:28,959 INFO L85 PathProgramCache]: Analyzing trace with hash 421842475, now seen corresponding path program 1 times [2021-12-28 03:58:28,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:58:28,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724044677] [2021-12-28 03:58:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:58:28,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:58:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:58:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:58:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:58:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:58:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:58:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:58:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:58:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:58:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:58:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:58:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:58:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:58:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:58:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:58:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-28 03:58:29,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:58:29,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724044677] [2021-12-28 03:58:29,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724044677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:58:29,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:58:29,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:58:29,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820280303] [2021-12-28 03:58:29,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:58:29,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:58:29,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:58:29,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:58:29,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:58:29,257 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)