./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.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 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 15:07:53,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:07:53,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:07:53,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:07:53,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:07:53,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:07:53,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:07:53,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:07:53,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:07:53,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:07:53,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:07:53,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:07:53,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:07:53,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:07:53,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:07:53,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:07:53,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:07:53,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:07:53,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:07:53,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:07:53,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:07:53,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:07:53,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:07:53,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:07:53,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:07:53,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:07:53,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:07:53,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:07:53,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:07:53,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:07:53,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:07:53,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:07:53,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:07:53,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:07:53,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:07:53,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:07:53,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:07:53,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:07:53,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:07:53,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:07:53,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:07:53,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:07:53,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:07:53,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:07:53,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:07:53,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:07:53,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:07:53,571 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:07:53,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:07:53,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:07:53,572 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:07:53,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:07:53,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:07:53,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:07:53,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:07:53,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:07:53,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:07:53,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:07:53,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:07:53,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:07:53,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:07:53,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:07:53,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:07:53,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:07:53,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:07:53,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:07:53,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:07:53,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:07:53,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:07:53,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:07:53,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:07:53,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:07:53,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:07:53,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2021-12-22 15:07:53,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:07:53,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:07:53,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:07:53,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:07:53,896 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:07:53,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-12-22 15:07:53,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a374028e3/b48cb8496b8c491e9e5389238c982ada/FLAG34bb0f5ba [2021-12-22 15:07:54,585 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:07:54,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-12-22 15:07:54,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a374028e3/b48cb8496b8c491e9e5389238c982ada/FLAG34bb0f5ba [2021-12-22 15:07:54,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a374028e3/b48cb8496b8c491e9e5389238c982ada [2021-12-22 15:07:54,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:07:54,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:07:54,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:07:54,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:07:54,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:07:54,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:07:54" (1/1) ... [2021-12-22 15:07:54,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28606979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:54, skipping insertion in model container [2021-12-22 15:07:54,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:07:54" (1/1) ... [2021-12-22 15:07:54,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:07:54,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:07:56,465 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2021-12-22 15:07:56,500 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-22 15:07:56,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:07:56,533 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:07:56,844 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2021-12-22 15:07:56,852 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-22 15:07:56,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:07:56,905 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:07:56,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56 WrapperNode [2021-12-22 15:07:56,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:07:56,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:07:56,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:07:56,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:07:56,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:56,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,136 INFO L137 Inliner]: procedures = 252, calls = 2297, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 6001 [2021-12-22 15:07:57,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:07:57,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:07:57,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:07:57,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:07:57,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:07:57,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:07:57,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:07:57,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:07:57,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (1/1) ... [2021-12-22 15:07:57,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:07:57,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:07:57,402 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 15:07:57,414 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 15:07:57,432 INFO L130 BoogieDeclarations]: Found specification of procedure atm_charge [2021-12-22 15:07:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_charge [2021-12-22 15:07:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-12-22 15:07:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-12-22 15:07:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure process_tsq [2021-12-22 15:07:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure process_tsq [2021-12-22 15:07:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 15:07:57,433 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-12-22 15:07:57,433 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-12-22 15:07:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 15:07:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:07:57,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:07:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:07:57,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:07:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-22 15:07:57,434 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-22 15:07:57,434 INFO L130 BoogieDeclarations]: Found specification of procedure ns_open [2021-12-22 15:07:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_open [2021-12-22 15:07:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-22 15:07:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-22 15:07:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-22 15:07:57,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-22 15:07:57,435 INFO L130 BoogieDeclarations]: Found specification of procedure ns_read_sram [2021-12-22 15:07:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_read_sram [2021-12-22 15:07:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure get_scq [2021-12-22 15:07:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure get_scq [2021-12-22 15:07:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:07:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:07:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_rx_buf [2021-12-22 15:07:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_rx_buf [2021-12-22 15:07:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-22 15:07:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-22 15:07:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:07:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:07:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure __net_timestamp [2021-12-22 15:07:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __net_timestamp [2021-12-22 15:07:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-22 15:07:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-22 15:07:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-22 15:07:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-22 15:07:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 15:07:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 15:07:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:07:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:07:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 15:07:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 15:07:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2021-12-22 15:07:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2021-12-22 15:07:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-22 15:07:57,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-22 15:07:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:07:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 15:07:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 15:07:57,440 INFO L130 BoogieDeclarations]: Found specification of procedure process_rsq [2021-12-22 15:07:57,440 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rsq [2021-12-22 15:07:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:07:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-22 15:07:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-22 15:07:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-22 15:07:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 15:07:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 15:07:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_alloc_skb [2021-12-22 15:07:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_alloc_skb [2021-12-22 15:07:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:07:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-22 15:07:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-22 15:07:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-22 15:07:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-22 15:07:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:07:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure dequeue_sm_buf [2021-12-22 15:07:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dequeue_sm_buf [2021-12-22 15:07:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-12-22 15:07:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-12-22 15:07:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-22 15:07:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-22 15:07:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 15:07:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 15:07:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure push_rxbufs [2021-12-22 15:07:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure push_rxbufs [2021-12-22 15:07:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 15:07:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_get [2021-12-22 15:07:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_get [2021-12-22 15:07:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-22 15:07:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-22 15:07:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 15:07:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 15:07:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-22 15:07:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-22 15:07:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 15:07:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure ns_close [2021-12-22 15:07:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_close [2021-12-22 15:07:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-22 15:07:57,447 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-22 15:07:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-22 15:07:57,447 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-22 15:07:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:07:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-22 15:07:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-22 15:07:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_read_eprom [2021-12-22 15:07:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_read_eprom [2021-12-22 15:07:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 15:07:57,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 15:07:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_put [2021-12-22 15:07:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_put [2021-12-22 15:07:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 15:07:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 15:07:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iov_buf [2021-12-22 15:07:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iov_buf [2021-12-22 15:07:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-12-22 15:07:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-12-22 15:07:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 15:07:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 15:07:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:07:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-22 15:07:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-22 15:07:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-22 15:07:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-22 15:07:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure ns_send [2021-12-22 15:07:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_send [2021-12-22 15:07:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-12-22 15:07:57,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-12-22 15:07:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-22 15:07:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-22 15:07:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 15:07:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 15:07:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:07:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:07:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-12-22 15:07:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-12-22 15:07:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:07:57,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:07:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:07:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:07:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:07:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-22 15:07:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-22 15:07:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-22 15:07:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-22 15:07:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2021-12-22 15:07:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2021-12-22 15:07:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:07:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-22 15:07:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-22 15:07:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-22 15:07:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-22 15:07:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-22 15:07:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-22 15:07:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:07:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 15:07:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-22 15:07:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-22 15:07:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-22 15:07:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-22 15:07:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 15:07:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 15:07:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 15:07:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 15:07:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure free_scq [2021-12-22 15:07:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scq [2021-12-22 15:07:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-12-22 15:07:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-12-22 15:07:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2021-12-22 15:07:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2021-12-22 15:07:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iovec_rx_bufs [2021-12-22 15:07:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iovec_rx_bufs [2021-12-22 15:07:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-22 15:07:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-22 15:07:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_remove_one [2021-12-22 15:07:57,464 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_remove_one [2021-12-22 15:07:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2021-12-22 15:07:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2021-12-22 15:07:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 15:07:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 15:07:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-22 15:07:57,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-22 15:07:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure ns_init_card_error [2021-12-22 15:07:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_init_card_error [2021-12-22 15:07:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-22 15:07:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-22 15:07:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-22 15:07:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-22 15:07:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-22 15:07:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-22 15:07:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure ns_write_sram [2021-12-22 15:07:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_write_sram [2021-12-22 15:07:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-22 15:07:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-22 15:07:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:07:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-22 15:07:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-22 15:07:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-22 15:07:57,467 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-22 15:07:57,467 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-22 15:07:57,468 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-22 15:07:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:07:57,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:07:57,468 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-22 15:07:57,468 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-22 15:07:58,127 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:07:58,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:07:58,695 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:08:03,148 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:08:03,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:08:03,168 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 15:08:03,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:08:03 BoogieIcfgContainer [2021-12-22 15:08:03,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:08:03,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:08:03,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:08:03,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:08:03,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:07:54" (1/3) ... [2021-12-22 15:08:03,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4620415d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:08:03, skipping insertion in model container [2021-12-22 15:08:03,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:07:56" (2/3) ... [2021-12-22 15:08:03,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4620415d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:08:03, skipping insertion in model container [2021-12-22 15:08:03,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:08:03" (3/3) ... [2021-12-22 15:08:03,179 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-12-22 15:08:03,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:08:03,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:08:03,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:08:03,249 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 15:08:03,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:08:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) [2021-12-22 15:08:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 15:08:03,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:08:03,299 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:03,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:08:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:08:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2087334661, now seen corresponding path program 1 times [2021-12-22 15:08:03,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:08:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100948734] [2021-12-22 15:08:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:08:03,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:08:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:08:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:08:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:08:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:08:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:08:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:08:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:08:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 15:08:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:04,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:08:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-22 15:08:04,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:08:04,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100948734] [2021-12-22 15:08:04,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100948734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:08:04,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:08:04,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 15:08:04,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431568868] [2021-12-22 15:08:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:08:04,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 15:08:04,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:08:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 15:08:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 15:08:04,085 INFO L87 Difference]: Start difference. First operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 15:08:09,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:08:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:08:10,131 INFO L93 Difference]: Finished difference Result 4407 states and 6723 transitions. [2021-12-22 15:08:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 15:08:10,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 149 [2021-12-22 15:08:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:08:10,202 INFO L225 Difference]: With dead ends: 4407 [2021-12-22 15:08:10,202 INFO L226 Difference]: Without dead ends: 2359 [2021-12-22 15:08:10,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:08:10,237 INFO L933 BasicCegarLoop]: 2751 mSDtfsCounter, 1959 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 2395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2395 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-22 15:08:10,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2045 Valid, 3979 Invalid, 3830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2395 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-22 15:08:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-12-22 15:08:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1993. [2021-12-22 15:08:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1345 states have (on average 1.3405204460966542) internal successors, (1803), 1406 states have internal predecessors, (1803), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2021-12-22 15:08:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2920 transitions. [2021-12-22 15:08:10,406 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2920 transitions. Word has length 149 [2021-12-22 15:08:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:08:10,407 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 2920 transitions. [2021-12-22 15:08:10,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-22 15:08:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2920 transitions. [2021-12-22 15:08:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 15:08:10,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:08:10,417 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:10,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:08:10,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:08:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:08:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 42047035, now seen corresponding path program 1 times [2021-12-22 15:08:10,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:08:10,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323407894] [2021-12-22 15:08:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:08:10,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:08:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:08:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:08:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:08:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:08:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:08:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:08:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:08:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 15:08:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:08:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-22 15:08:10,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:08:10,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323407894] [2021-12-22 15:08:10,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323407894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:08:10,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:08:10,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:08:10,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188613207] [2021-12-22 15:08:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:08:10,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:08:10,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:08:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:08:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:08:10,750 INFO L87 Difference]: Start difference. First operand 1993 states and 2920 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-22 15:08:20,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:08:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:08:21,306 INFO L93 Difference]: Finished difference Result 6097 states and 9098 transitions. [2021-12-22 15:08:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:08:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 149 [2021-12-22 15:08:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:08:21,334 INFO L225 Difference]: With dead ends: 6097 [2021-12-22 15:08:21,335 INFO L226 Difference]: Without dead ends: 4130 [2021-12-22 15:08:21,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:08:21,347 INFO L933 BasicCegarLoop]: 3276 mSDtfsCounter, 5166 mSDsluCounter, 3689 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 4166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 6965 SdHoareTripleChecker+Invalid, 6977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4166 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-22 15:08:21,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5536 Valid, 6965 Invalid, 6977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4166 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2021-12-22 15:08:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-12-22 15:08:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3486. [2021-12-22 15:08:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 2362 states have (on average 1.3450465707027943) internal successors, (3177), 2472 states have internal predecessors, (3177), 954 states have call successors, (954), 170 states have call predecessors, (954), 169 states have return successors, (953), 931 states have call predecessors, (953), 953 states have call successors, (953) [2021-12-22 15:08:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5084 transitions. [2021-12-22 15:08:21,633 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5084 transitions. Word has length 149 [2021-12-22 15:08:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:08:21,634 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 5084 transitions. [2021-12-22 15:08:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-22 15:08:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5084 transitions. [2021-12-22 15:08:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 15:08:21,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:08:21,637 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:21,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:08:21,637 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:08:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:08:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash -725484821, now seen corresponding path program 1 times [2021-12-22 15:08:21,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:08:21,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894104482] [2021-12-22 15:08:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:08:21,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:08:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:08:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:08:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:08:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:08:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:08:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:08:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:08:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 15:08:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:08:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 15:08:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-22 15:08:21,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:08:21,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894104482] [2021-12-22 15:08:21,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894104482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:08:21,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:08:21,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:08:21,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997339121] [2021-12-22 15:08:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:08:21,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:08:21,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:08:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:08:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:08:21,976 INFO L87 Difference]: Start difference. First operand 3486 states and 5084 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 15:08:24,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:08:29,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:08:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:08:34,548 INFO L93 Difference]: Finished difference Result 10598 states and 15749 transitions. [2021-12-22 15:08:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:08:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 156 [2021-12-22 15:08:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:08:34,587 INFO L225 Difference]: With dead ends: 10598 [2021-12-22 15:08:34,587 INFO L226 Difference]: Without dead ends: 7152 [2021-12-22 15:08:34,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:08:34,602 INFO L933 BasicCegarLoop]: 3113 mSDtfsCounter, 4600 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 3998 mSolverCounterSat, 3282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 7470 SdHoareTripleChecker+Invalid, 7280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3282 IncrementalHoareTripleChecker+Valid, 3998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-22 15:08:34,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5028 Valid, 7470 Invalid, 7280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3282 Valid, 3998 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2021-12-22 15:08:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2021-12-22 15:08:34,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 6095. [2021-12-22 15:08:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6095 states, 4116 states have (on average 1.3350340136054422) internal successors, (5495), 4312 states have internal predecessors, (5495), 1673 states have call successors, (1673), 302 states have call predecessors, (1673), 305 states have return successors, (1694), 1626 states have call predecessors, (1694), 1672 states have call successors, (1694) [2021-12-22 15:08:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 8862 transitions. [2021-12-22 15:08:34,878 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 8862 transitions. Word has length 156 [2021-12-22 15:08:34,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:08:34,878 INFO L470 AbstractCegarLoop]: Abstraction has 6095 states and 8862 transitions. [2021-12-22 15:08:34,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 15:08:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 8862 transitions. [2021-12-22 15:08:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-22 15:08:34,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:08:34,881 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:34,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 15:08:34,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:08:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:08:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2061735436, now seen corresponding path program 1 times [2021-12-22 15:08:34,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:08:34,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141261032] [2021-12-22 15:08:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:08:34,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:08:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:08:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:08:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:08:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:08:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:08:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:08:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:08:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:08:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 15:08:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:08:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:08:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 15:08:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 15:08:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 15:08:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:08:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-22 15:08:35,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:08:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141261032] [2021-12-22 15:08:35,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141261032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:08:35,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:08:35,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 15:08:35,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197417672] [2021-12-22 15:08:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:08:35,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 15:08:35,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:08:35,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 15:08:35,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:08:35,382 INFO L87 Difference]: Start difference. First operand 6095 states and 8862 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-22 15:08:42,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:08:48,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []