./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 e19ca921 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-e19ca92 [2021-12-22 14:39:28,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:39:28,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:39:28,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:39:28,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:39:28,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:39:28,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:39:28,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:39:28,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:39:28,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:39:28,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:39:28,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:39:28,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:39:28,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:39:28,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:39:28,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:39:28,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:39:28,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:39:28,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:39:28,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:39:28,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:39:28,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:39:28,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:39:28,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:39:28,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:39:28,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:39:28,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:39:28,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:39:28,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:39:28,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:39:28,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:39:28,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:39:28,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:39:28,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:39:28,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:39:28,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:39:28,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:39:28,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:39:28,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:39:28,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:39:28,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:39:28,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:39:28,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:39:28,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:39:28,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:39:28,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:39:28,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:39:28,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:39:28,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:39:28,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:39:28,382 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:39:28,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:39:28,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:39:28,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:39:28,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:39:28,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:39:28,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:39:28,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:39:28,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:39:28,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:39:28,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:39:28,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:39:28,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:39:28,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:28,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:39:28,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:39:28,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:39:28,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:39:28,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:39:28,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:39:28,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:39:28,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:39:28,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:39:28,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-12-22 14:39:28,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:39:28,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:39:28,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:39:28,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:39:28,706 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:39:28,707 INFO L432 ainManager$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 [2021-12-22 14:39:28,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c6656cc/4633782be0cb4e9eba50c9e664702164/FLAG00a14ffc0 [2021-12-22 14:39:29,698 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:39:29,699 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 [2021-12-22 14:39:29,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c6656cc/4633782be0cb4e9eba50c9e664702164/FLAG00a14ffc0 [2021-12-22 14:39:29,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c6656cc/4633782be0cb4e9eba50c9e664702164 [2021-12-22 14:39:29,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:39:29,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:39:29,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:29,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:39:29,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:39:29,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:29" (1/1) ... [2021-12-22 14:39:29,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c26cb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:29, skipping insertion in model container [2021-12-22 14:39:29,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:29" (1/1) ... [2021-12-22 14:39:29,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:39:29,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:39:30,987 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] [2021-12-22 14:39:31,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:31,544 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:39:31,676 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] [2021-12-22 14:39:31,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:31,933 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:39:31,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31 WrapperNode [2021-12-22 14:39:31,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:31,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:31,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:39:31,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:39:31,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,183 INFO L137 Inliner]: procedures = 375, calls = 2229, calls flagged for inlining = 193, calls inlined = 191, statements flattened = 6424 [2021-12-22 14:39:32,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:32,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:39:32,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:39:32,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:39:32,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:39:32,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:39:32,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:39:32,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:39:32,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (1/1) ... [2021-12-22 14:39:32,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:32,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:39:32,516 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) [2021-12-22 14:39:32,592 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 [2021-12-22 14:39:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_destroy [2021-12-22 14:39:32,613 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_destroy [2021-12-22 14:39:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure find_comp_entry [2021-12-22 14:39:32,613 INFO L138 BoogieDeclarations]: Found implementation of procedure find_comp_entry [2021-12-22 14:39:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-22 14:39:32,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-22 14:39:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_bh [2021-12-22 14:39:32,614 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_bh [2021-12-22 14:39:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-22 14:39:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_bh [2021-12-22 14:39:32,614 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_bh [2021-12-22 14:39:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:39:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:39:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:39:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:39:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-22 14:39:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-22 14:39:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-22 14:39:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-22 14:39:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-12-22 14:39:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-12-22 14:39:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-12-22 14:39:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-12-22 14:39:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_shutdown_interface [2021-12-22 14:39:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_shutdown_interface [2021-12-22 14:39:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-12-22 14:39:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-12-22 14:39:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-22 14:39:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-22 14:39:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-22 14:39:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-22 14:39:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 14:39:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 14:39:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:39:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:39:32,617 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock_bh [2021-12-22 14:39:32,617 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock_bh [2021-12-22 14:39:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-12-22 14:39:32,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-12-22 14:39:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-22 14:39:32,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-22 14:39:32,618 INFO L130 BoogieDeclarations]: Found specification of procedure unit_find [2021-12-22 14:39:32,618 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_find [2021-12-22 14:39:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:39:32,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:39:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2021-12-22 14:39:32,619 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2021-12-22 14:39:32,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:39:32,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:39:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2021-12-22 14:39:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2021-12-22 14:39:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-22 14:39:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-22 14:39:32,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:39:32,620 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:39:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure init_ppp_file [2021-12-22 14:39:32,621 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ppp_file [2021-12-22 14:39:32,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:39:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:39:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-22 14:39:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-22 14:39:32,622 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:39:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:39:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure skb_peek [2021-12-22 14:39:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_peek [2021-12-22 14:39:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_19 [2021-12-22 14:39:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_19 [2021-12-22 14:39:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-12-22 14:39:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-12-22 14:39:32,623 INFO L130 BoogieDeclarations]: Found specification of procedure get_filter [2021-12-22 14:39:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure get_filter [2021-12-22 14:39:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:39:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 14:39:32,624 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 14:39:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-12-22 14:39:32,624 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-12-22 14:39:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-22 14:39:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-22 14:39:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:39:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-22 14:39:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-22 14:39:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_get_stats64 [2021-12-22 14:39:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_get_stats64 [2021-12-22 14:39:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-22 14:39:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-22 14:39:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-22 14:39:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-22 14:39:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-12-22 14:39:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-12-22 14:39:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-22 14:39:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-22 14:39:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:39:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:39:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_error [2021-12-22 14:39:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_error [2021-12-22 14:39:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_find_unit [2021-12-22 14:39:32,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_find_unit [2021-12-22 14:39:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:39:32,628 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:39:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-22 14:39:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-22 14:39:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure sk_unattached_filter_create [2021-12-22 14:39:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_unattached_filter_create [2021-12-22 14:39:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:39:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:39:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:39:32,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:39:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-12-22 14:39:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-12-22 14:39:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:39:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:39:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-22 14:39:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-22 14:39:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-22 14:39:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-22 14:39:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure find_compressor [2021-12-22 14:39:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure find_compressor [2021-12-22 14:39:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_pernet [2021-12-22 14:39:32,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_pernet [2021-12-22 14:39:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 14:39:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 14:39:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-22 14:39:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-22 14:39:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:39:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:39:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:39:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:39:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:39:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pernet_device [2021-12-22 14:39:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pernet_device [2021-12-22 14:39:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:39:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:39:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-12-22 14:39:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-12-22 14:39:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_net_ioctl [2021-12-22 14:39:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_net_ioctl [2021-12-22 14:39:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:39:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_bh [2021-12-22 14:39:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_bh [2021-12-22 14:39:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-22 14:39:32,641 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-22 14:39:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:39:32,641 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-22 14:39:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-22 14:39:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-12-22 14:39:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-12-22 14:39:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-12-22 14:39:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-12-22 14:39:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_exit_net [2021-12-22 14:39:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_exit_net [2021-12-22 14:39:32,642 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-22 14:39:32,642 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-22 14:39:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-22 14:39:32,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-22 14:39:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2021-12-22 14:39:32,643 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2021-12-22 14:39:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_do_recv [2021-12-22 14:39:32,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_do_recv [2021-12-22 14:39:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-12-22 14:39:32,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-12-22 14:39:32,643 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-12-22 14:39:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-12-22 14:39:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_16 [2021-12-22 14:39:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_16 [2021-12-22 14:39:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-12-22 14:39:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-12-22 14:39:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure proto_to_npindex [2021-12-22 14:39:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure proto_to_npindex [2021-12-22 14:39:32,644 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2021-12-22 14:39:32,644 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2021-12-22 14:39:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-22 14:39:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-22 14:39:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:39:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:39:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure unit_put [2021-12-22 14:39:32,645 INFO L138 BoogieDeclarations]: Found implementation of procedure unit_put [2021-12-22 14:39:32,645 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_receive_nonmp_frame [2021-12-22 14:39:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_receive_nonmp_frame [2021-12-22 14:39:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-12-22 14:39:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-12-22 14:39:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:39:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 14:39:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 14:39:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-22 14:39:32,646 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-22 14:39:32,646 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-12-22 14:39:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-12-22 14:39:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_write [2021-12-22 14:39:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_write [2021-12-22 14:39:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:39:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:39:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-12-22 14:39:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-12-22 14:39:32,647 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_open [2021-12-22 14:39:32,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_open [2021-12-22 14:39:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:39:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-22 14:39:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-22 14:39:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-22 14:39:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-22 14:39:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:39:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-22 14:39:32,648 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-22 14:39:32,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:39:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-22 14:39:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-22 14:39:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:39:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-22 14:39:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~$Pointer$ [2021-12-22 14:39:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:39:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 14:39:32,649 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-22 14:39:32,649 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-22 14:39:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-12-22 14:39:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-12-22 14:39:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-12-22 14:39:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-12-22 14:39:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-22 14:39:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-22 14:39:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-22 14:39:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-22 14:39:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-22 14:39:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-22 14:39:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_long_read [2021-12-22 14:39:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_long_read [2021-12-22 14:39:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-22 14:39:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-22 14:39:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-22 14:39:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-22 14:39:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 14:39:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 14:39:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_register_net_channel [2021-12-22 14:39:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_register_net_channel [2021-12-22 14:39:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 14:39:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 14:39:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-12-22 14:39:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-12-22 14:39:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_may_pull [2021-12-22 14:39:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_may_pull [2021-12-22 14:39:32,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:39:32,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:39:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ioctl [2021-12-22 14:39:32,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ioctl [2021-12-22 14:39:32,653 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-12-22 14:39:32,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-12-22 14:39:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_44 [2021-12-22 14:39:32,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_44 [2021-12-22 14:39:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_poll [2021-12-22 14:39:32,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_poll [2021-12-22 14:39:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:39:32,656 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_channel [2021-12-22 14:39:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_channel [2021-12-22 14:39:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-22 14:39:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-22 14:39:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:39:32,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:39:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:39:32,658 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:39:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-22 14:39:32,658 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-22 14:39:33,394 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:39:33,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:39:33,742 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:39:36,166 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:39:36,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:39:36,182 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-22 14:39:36,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:36 BoogieIcfgContainer [2021-12-22 14:39:36,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:39:36,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:39:36,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:39:36,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:39:36,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:39:29" (1/3) ... [2021-12-22 14:39:36,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9091a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:36, skipping insertion in model container [2021-12-22 14:39:36,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:31" (2/3) ... [2021-12-22 14:39:36,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9091a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:36, skipping insertion in model container [2021-12-22 14:39:36,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:36" (3/3) ... [2021-12-22 14:39:36,192 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 [2021-12-22 14:39:36,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:39:36,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:39:36,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:39:36,241 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 [2021-12-22 14:39:36,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:39:36,281 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) [2021-12-22 14:39:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-22 14:39:36,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:36,291 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] [2021-12-22 14:39:36,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1166428172, now seen corresponding path program 1 times [2021-12-22 14:39:36,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:36,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999087968] [2021-12-22 14:39:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:36,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 14:39:36,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:36,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999087968] [2021-12-22 14:39:36,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999087968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:36,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:36,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:36,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129247224] [2021-12-22 14:39:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:36,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:36,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:36,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:36,791 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) [2021-12-22 14:39:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:42,885 INFO L93 Difference]: Finished difference Result 7078 states and 10935 transitions. [2021-12-22 14:39:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:39:42,889 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 [2021-12-22 14:39:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:42,959 INFO L225 Difference]: With dead ends: 7078 [2021-12-22 14:39:42,959 INFO L226 Difference]: Without dead ends: 4873 [2021-12-22 14:39:42,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:42,982 INFO L933 BasicCegarLoop]: 3728 mSDtfsCounter, 4516 mSDsluCounter, 10719 mSDsCounter, 0 mSdLazyCounter, 4230 mSolverCounterSat, 1595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4889 SdHoareTripleChecker+Valid, 14447 SdHoareTripleChecker+Invalid, 5825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1595 IncrementalHoareTripleChecker+Valid, 4230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:42,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4889 Valid, 14447 Invalid, 5825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1595 Valid, 4230 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-22 14:39:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2021-12-22 14:39:43,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4383. [2021-12-22 14:39:43,246 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) [2021-12-22 14:39:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6455 transitions. [2021-12-22 14:39:43,278 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6455 transitions. Word has length 69 [2021-12-22 14:39:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:43,279 INFO L470 AbstractCegarLoop]: Abstraction has 4383 states and 6455 transitions. [2021-12-22 14:39:43,279 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) [2021-12-22 14:39:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6455 transitions. [2021-12-22 14:39:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-22 14:39:43,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:43,294 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] [2021-12-22 14:39:43,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:39:43,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1147589655, now seen corresponding path program 1 times [2021-12-22 14:39:43,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607438746] [2021-12-22 14:39:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:43,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 14:39:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:39:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:39:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 14:39:43,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607438746] [2021-12-22 14:39:43,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607438746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:43,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:43,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:39:43,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927294682] [2021-12-22 14:39:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:39:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:39:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:39:43,700 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) [2021-12-22 14:39:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:53,071 INFO L93 Difference]: Finished difference Result 14573 states and 22266 transitions. [2021-12-22 14:39:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:39:53,071 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 [2021-12-22 14:39:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:53,145 INFO L225 Difference]: With dead ends: 14573 [2021-12-22 14:39:53,145 INFO L226 Difference]: Without dead ends: 10210 [2021-12-22 14:39:53,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:53,170 INFO L933 BasicCegarLoop]: 3702 mSDtfsCounter, 6506 mSDsluCounter, 5288 mSDsCounter, 0 mSdLazyCounter, 4684 mSolverCounterSat, 3336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6842 SdHoareTripleChecker+Valid, 8990 SdHoareTripleChecker+Invalid, 8020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3336 IncrementalHoareTripleChecker+Valid, 4684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:53,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6842 Valid, 8990 Invalid, 8020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3336 Valid, 4684 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-12-22 14:39:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-12-22 14:39:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 8739. [2021-12-22 14:39:53,579 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) [2021-12-22 14:39:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8739 states to 8739 states and 13154 transitions. [2021-12-22 14:39:53,618 INFO L78 Accepts]: Start accepts. Automaton has 8739 states and 13154 transitions. Word has length 105 [2021-12-22 14:39:53,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:53,619 INFO L470 AbstractCegarLoop]: Abstraction has 8739 states and 13154 transitions. [2021-12-22 14:39:53,619 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) [2021-12-22 14:39:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8739 states and 13154 transitions. [2021-12-22 14:39:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 14:39:53,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:53,630 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] [2021-12-22 14:39:53,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:39:53,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1215083750, now seen corresponding path program 1 times [2021-12-22 14:39:53,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:53,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220394475] [2021-12-22 14:39:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:53,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:39:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:39:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:39:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:39:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:39:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:39:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:39:53,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220394475] [2021-12-22 14:39:53,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220394475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:53,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:53,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:53,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050624900] [2021-12-22 14:39:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:53,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:53,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:53,910 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) [2021-12-22 14:40:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:05,031 INFO L93 Difference]: Finished difference Result 25654 states and 39179 transitions. [2021-12-22 14:40:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:40:05,032 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 [2021-12-22 14:40:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:05,172 INFO L225 Difference]: With dead ends: 25654 [2021-12-22 14:40:05,173 INFO L226 Difference]: Without dead ends: 16935 [2021-12-22 14:40:05,221 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 [2021-12-22 14:40:05,225 INFO L933 BasicCegarLoop]: 4602 mSDtfsCounter, 3092 mSDsluCounter, 7896 mSDsCounter, 0 mSdLazyCounter, 5927 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3380 SdHoareTripleChecker+Valid, 12498 SdHoareTripleChecker+Invalid, 7042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 5927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:05,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3380 Valid, 12498 Invalid, 7042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1115 Valid, 5927 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2021-12-22 14:40:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16935 states. [2021-12-22 14:40:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16935 to 14784. [2021-12-22 14:40:05,864 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) [2021-12-22 14:40:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22087 transitions. [2021-12-22 14:40:05,932 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22087 transitions. Word has length 108 [2021-12-22 14:40:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:05,933 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22087 transitions. [2021-12-22 14:40:05,934 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) [2021-12-22 14:40:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22087 transitions. [2021-12-22 14:40:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-22 14:40:05,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:05,943 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] [2021-12-22 14:40:05,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:40:05,943 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1577830905, now seen corresponding path program 1 times [2021-12-22 14:40:05,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:05,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580927323] [2021-12-22 14:40:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:05,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:40:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:40:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 14:40:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:40:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-22 14:40:06,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:06,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580927323] [2021-12-22 14:40:06,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580927323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:06,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:06,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:40:06,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607841269] [2021-12-22 14:40:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:06,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:40:06,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:06,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:40:06,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:40:06,221 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) [2021-12-22 14:40:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:11,351 INFO L93 Difference]: Finished difference Result 31679 states and 48084 transitions. [2021-12-22 14:40:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:40:11,351 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 [2021-12-22 14:40:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:11,449 INFO L225 Difference]: With dead ends: 31679 [2021-12-22 14:40:11,450 INFO L226 Difference]: Without dead ends: 16915 [2021-12-22 14:40:11,515 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 [2021-12-22 14:40:11,516 INFO L933 BasicCegarLoop]: 2898 mSDtfsCounter, 3783 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 4122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:11,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4112 Valid, 6441 Invalid, 4122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1062 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-22 14:40:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2021-12-22 14:40:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 14784. [2021-12-22 14:40:12,126 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) [2021-12-22 14:40:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14784 states to 14784 states and 22079 transitions. [2021-12-22 14:40:12,194 INFO L78 Accepts]: Start accepts. Automaton has 14784 states and 22079 transitions. Word has length 142 [2021-12-22 14:40:12,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:12,195 INFO L470 AbstractCegarLoop]: Abstraction has 14784 states and 22079 transitions. [2021-12-22 14:40:12,195 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) [2021-12-22 14:40:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 14784 states and 22079 transitions. [2021-12-22 14:40:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 14:40:12,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:12,200 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] [2021-12-22 14:40:12,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:40:12,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash 179241227, now seen corresponding path program 1 times [2021-12-22 14:40:12,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:12,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191354549] [2021-12-22 14:40:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:12,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:40:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:40:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 14:40:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:40:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 14:40:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-22 14:40:12,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191354549] [2021-12-22 14:40:12,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191354549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:12,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:12,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:40:12,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189745491] [2021-12-22 14:40:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:12,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:40:12,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:40:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:40:12,445 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) [2021-12-22 14:40:22,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:22,907 INFO L93 Difference]: Finished difference Result 39062 states and 59398 transitions. [2021-12-22 14:40:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:40:22,908 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 [2021-12-22 14:40:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:23,017 INFO L225 Difference]: With dead ends: 39062 [2021-12-22 14:40:23,017 INFO L226 Difference]: Without dead ends: 24298 [2021-12-22 14:40:23,060 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 [2021-12-22 14:40:23,061 INFO L933 BasicCegarLoop]: 3952 mSDtfsCounter, 3484 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 5253 mSolverCounterSat, 1314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 10815 SdHoareTripleChecker+Invalid, 6567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1314 IncrementalHoareTripleChecker+Valid, 5253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:23,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 10815 Invalid, 6567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1314 Valid, 5253 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-12-22 14:40:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24298 states. [2021-12-22 14:40:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24298 to 21097. [2021-12-22 14:40:23,840 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) [2021-12-22 14:40:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21097 states to 21097 states and 31398 transitions. [2021-12-22 14:40:23,929 INFO L78 Accepts]: Start accepts. Automaton has 21097 states and 31398 transitions. Word has length 149 [2021-12-22 14:40:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:23,930 INFO L470 AbstractCegarLoop]: Abstraction has 21097 states and 31398 transitions. [2021-12-22 14:40:23,931 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) [2021-12-22 14:40:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 21097 states and 31398 transitions. [2021-12-22 14:40:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 14:40:23,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:23,935 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] [2021-12-22 14:40:23,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:40:23,935 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 421842475, now seen corresponding path program 1 times [2021-12-22 14:40:23,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539176827] [2021-12-22 14:40:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:23,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:40:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:40:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 14:40:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:40:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 14:40:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 14:40:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 14:40:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:40:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 14:40:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:40:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-22 14:40:24,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:24,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539176827] [2021-12-22 14:40:24,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539176827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:24,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:40:24,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:40:24,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514915668] [2021-12-22 14:40:24,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:24,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:40:24,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:40:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:40:24,253 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) [2021-12-22 14:40:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:40:31,821 INFO L93 Difference]: Finished difference Result 45337 states and 70621 transitions. [2021-12-22 14:40:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:40:31,822 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 149 [2021-12-22 14:40:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:40:31,955 INFO L225 Difference]: With dead ends: 45337 [2021-12-22 14:40:31,956 INFO L226 Difference]: Without dead ends: 24260 [2021-12-22 14:40:32,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:40:32,049 INFO L933 BasicCegarLoop]: 2930 mSDtfsCounter, 1662 mSDsluCounter, 14963 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 1320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 17893 SdHoareTripleChecker+Invalid, 7240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1320 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:40:32,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 17893 Invalid, 7240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1320 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-12-22 14:40:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24260 states. [2021-12-22 14:40:32,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24260 to 21070. [2021-12-22 14:40:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21070 states, 14849 states have (on average 1.3462859451814937) internal successors, (19991), 15519 states have internal predecessors, (19991), 4721 states have call successors, (4721), 1275 states have call predecessors, (4721), 1499 states have return successors, (6688), 4736 states have call predecessors, (6688), 4720 states have call successors, (6688) [2021-12-22 14:40:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21070 states to 21070 states and 31400 transitions. [2021-12-22 14:40:32,949 INFO L78 Accepts]: Start accepts. Automaton has 21070 states and 31400 transitions. Word has length 149 [2021-12-22 14:40:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:40:32,950 INFO L470 AbstractCegarLoop]: Abstraction has 21070 states and 31400 transitions. [2021-12-22 14:40:32,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-22 14:40:32,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21070 states and 31400 transitions. [2021-12-22 14:40:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 14:40:32,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:40:32,955 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:40:32,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:40:32,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:40:32,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:40:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2032814841, now seen corresponding path program 1 times [2021-12-22 14:40:32,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:40:32,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137760500] [2021-12-22 14:40:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:32,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:40:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat