./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:13:40,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:13:40,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:13:40,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:13:40,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:13:40,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:13:40,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:13:40,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:13:40,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:13:40,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:13:40,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:13:40,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:13:40,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:13:40,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:13:40,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:13:40,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:13:40,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:13:40,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:13:40,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:13:40,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:13:40,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:13:40,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:13:40,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:13:40,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:13:40,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:13:40,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:13:40,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:13:40,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:13:40,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:13:40,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:13:40,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:13:40,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:13:40,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:13:40,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:13:40,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:13:40,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:13:40,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:13:40,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:13:40,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:13:40,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:13:40,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:13:40,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:13:40,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:13:40,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:13:40,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:13:40,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:13:40,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:13:40,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:13:40,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:13:40,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:13:40,806 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:13:40,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:13:40,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:13:40,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:13:40,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:13:40,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:13:40,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:13:40,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:13:40,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:13:40,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:13:40,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:13:40,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:13:40,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:13:40,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:13:40,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:13:40,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:13:40,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:13:40,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2021-12-14 18:13:40,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:13:40,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:13:40,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:13:40,998 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:13:40,998 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:13:40,999 INFO L432 ainManager$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 [2021-12-14 18:13:41,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db83abda/9c4757381a3f4303ae5288819d12eb48/FLAGa7f4e0115 [2021-12-14 18:13:41,626 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:13:41,626 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 [2021-12-14 18:13:41,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db83abda/9c4757381a3f4303ae5288819d12eb48/FLAGa7f4e0115 [2021-12-14 18:13:41,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db83abda/9c4757381a3f4303ae5288819d12eb48 [2021-12-14 18:13:41,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:13:41,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:13:41,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:13:41,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:13:41,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:13:41,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:13:41" (1/1) ... [2021-12-14 18:13:41,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bff073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:41, skipping insertion in model container [2021-12-14 18:13:41,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:13:41" (1/1) ... [2021-12-14 18:13:41,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:13:41,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:13:43,478 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] [2021-12-14 18:13:43,515 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-14 18:13:43,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:13:43,548 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:13:43,841 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] [2021-12-14 18:13:43,845 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-14 18:13:43,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:13:43,905 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:13:43,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43 WrapperNode [2021-12-14 18:13:43,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:13:43,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:13:43,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:13:43,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:13:43,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:43,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,138 INFO L137 Inliner]: procedures = 252, calls = 2297, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 6001 [2021-12-14 18:13:44,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:13:44,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:13:44,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:13:44,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:13:44,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:13:44,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:13:44,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:13:44,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:13:44,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (1/1) ... [2021-12-14 18:13:44,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:13:44,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:13:44,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:13:44,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:13:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure atm_charge [2021-12-14 18:13:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_charge [2021-12-14 18:13:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-12-14 18:13:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-12-14 18:13:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure process_tsq [2021-12-14 18:13:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure process_tsq [2021-12-14 18:13:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:13:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-12-14 18:13:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-12-14 18:13:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:13:44,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:13:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:13:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:13:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:13:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-14 18:13:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-14 18:13:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure ns_open [2021-12-14 18:13:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_open [2021-12-14 18:13:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-14 18:13:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-14 18:13:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:13:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:13:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure ns_read_sram [2021-12-14 18:13:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_read_sram [2021-12-14 18:13:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure get_scq [2021-12-14 18:13:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure get_scq [2021-12-14 18:13:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:13:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:13:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_rx_buf [2021-12-14 18:13:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_rx_buf [2021-12-14 18:13:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 18:13:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 18:13:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:13:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:13:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure __net_timestamp [2021-12-14 18:13:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __net_timestamp [2021-12-14 18:13:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:13:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:13:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 18:13:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 18:13:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:13:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:13:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:13:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:13:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 18:13:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 18:13:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2021-12-14 18:13:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2021-12-14 18:13:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-14 18:13:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-14 18:13:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:13:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 18:13:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 18:13:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure process_rsq [2021-12-14 18:13:44,427 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rsq [2021-12-14 18:13:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:13:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-14 18:13:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:13:44,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:13:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:13:44,427 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:13:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_alloc_skb [2021-12-14 18:13:44,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_alloc_skb [2021-12-14 18:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-14 18:13:44,428 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-14 18:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-14 18:13:44,428 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-14 18:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:13:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure dequeue_sm_buf [2021-12-14 18:13:44,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dequeue_sm_buf [2021-12-14 18:13:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-12-14 18:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-12-14 18:13:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-14 18:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-14 18:13:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 18:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 18:13:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure push_rxbufs [2021-12-14 18:13:44,429 INFO L138 BoogieDeclarations]: Found implementation of procedure push_rxbufs [2021-12-14 18:13:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_get [2021-12-14 18:13:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_get [2021-12-14 18:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:13:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 18:13:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 18:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-14 18:13:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-14 18:13:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure ns_close [2021-12-14 18:13:44,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_close [2021-12-14 18:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-14 18:13:44,431 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-14 18:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-14 18:13:44,431 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-14 18:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:13:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:13:44,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_read_eprom [2021-12-14 18:13:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_read_eprom [2021-12-14 18:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:13:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_put [2021-12-14 18:13:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_put [2021-12-14 18:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:13:44,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:13:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iov_buf [2021-12-14 18:13:44,433 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iov_buf [2021-12-14 18:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-12-14 18:13:44,433 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-12-14 18:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:13:44,433 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:13:44,433 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:13:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 18:13:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 18:13:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure ns_send [2021-12-14 18:13:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_send [2021-12-14 18:13:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-12-14 18:13:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-12-14 18:13:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-14 18:13:44,434 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-14 18:13:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 18:13:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 18:13:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:13:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:13:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-12-14 18:13:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-12-14 18:13:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:13:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:13:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:13:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:13:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:13:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-14 18:13:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-14 18:13:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-14 18:13:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-14 18:13:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2021-12-14 18:13:44,436 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2021-12-14 18:13:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:13:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 18:13:44,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-12-14 18:13:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-14 18:13:44,437 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-14 18:13:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:13:44,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:13:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:13:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 18:13:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:13:44,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:13:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-14 18:13:44,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-14 18:13:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 18:13:44,438 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 18:13:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 18:13:44,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 18:13:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure free_scq [2021-12-14 18:13:44,438 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scq [2021-12-14 18:13:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2021-12-14 18:13:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2021-12-14 18:13:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2021-12-14 18:13:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2021-12-14 18:13:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iovec_rx_bufs [2021-12-14 18:13:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iovec_rx_bufs [2021-12-14 18:13:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-14 18:13:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-14 18:13:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_remove_one [2021-12-14 18:13:44,439 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_remove_one [2021-12-14 18:13:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2021-12-14 18:13:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2021-12-14 18:13:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 18:13:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 18:13:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-14 18:13:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-14 18:13:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure ns_init_card_error [2021-12-14 18:13:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_init_card_error [2021-12-14 18:13:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-14 18:13:44,440 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-14 18:13:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-14 18:13:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-14 18:13:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 18:13:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 18:13:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure ns_write_sram [2021-12-14 18:13:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_write_sram [2021-12-14 18:13:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-14 18:13:44,441 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-14 18:13:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:13:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:13:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:13:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-14 18:13:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-14 18:13:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-14 18:13:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-14 18:13:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:13:44,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:13:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-14 18:13:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-14 18:13:45,030 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:13:45,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:13:45,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:13:50,126 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:13:50,144 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:13:50,145 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-14 18:13:50,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:13:50 BoogieIcfgContainer [2021-12-14 18:13:50,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:13:50,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:13:50,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:13:50,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:13:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:13:41" (1/3) ... [2021-12-14 18:13:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a7279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:13:50, skipping insertion in model container [2021-12-14 18:13:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:13:43" (2/3) ... [2021-12-14 18:13:50,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a7279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:13:50, skipping insertion in model container [2021-12-14 18:13:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:13:50" (3/3) ... [2021-12-14 18:13:50,153 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2021-12-14 18:13:50,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:13:50,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:13:50,194 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:13:50,198 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:13:50,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:13:50,233 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) [2021-12-14 18:13:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 18:13:50,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:13:50,244 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] [2021-12-14 18:13:50,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:13:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:13:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2087334661, now seen corresponding path program 1 times [2021-12-14 18:13:50,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:13:50,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361144749] [2021-12-14 18:13:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:13:50,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:13:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:13:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:13:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:13:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:13:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:13:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:13:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:13:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:13:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:13:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:13:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:13:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:13:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 18:13:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:13:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:13:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:13:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 18:13:50,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:13:50,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361144749] [2021-12-14 18:13:50,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361144749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:13:50,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:13:50,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:13:50,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010314953] [2021-12-14 18:13:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:13:50,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:13:50,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:13:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:13:50,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:13:50,972 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) [2021-12-14 18:13:54,673 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 [] [2021-12-14 18:13:59,461 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 [] [2021-12-14 18:13:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:13:59,895 INFO L93 Difference]: Finished difference Result 4407 states and 6723 transitions. [2021-12-14 18:13:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:13:59,898 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 [2021-12-14 18:13:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:13:59,927 INFO L225 Difference]: With dead ends: 4407 [2021-12-14 18:13:59,927 INFO L226 Difference]: Without dead ends: 2359 [2021-12-14 18:13:59,945 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 [2021-12-14 18:13:59,951 INFO L933 BasicCegarLoop]: 2772 mSDtfsCounter, 1937 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 2371 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2371 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:13:59,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2021 Valid, 4000 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2371 Valid, 1454 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-12-14 18:13:59,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-12-14 18:14:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1993. [2021-12-14 18:14:00,108 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) [2021-12-14 18:14:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2920 transitions. [2021-12-14 18:14:00,122 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2920 transitions. Word has length 149 [2021-12-14 18:14:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:00,123 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 2920 transitions. [2021-12-14 18:14:00,123 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) [2021-12-14 18:14:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2920 transitions. [2021-12-14 18:14:00,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 18:14:00,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:00,127 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] [2021-12-14 18:14:00,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:14:00,128 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 42047035, now seen corresponding path program 1 times [2021-12-14 18:14:00,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:00,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887303218] [2021-12-14 18:14:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:00,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:14:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:14:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:14:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:14:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 18:14:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:14:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 18:14:00,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:00,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887303218] [2021-12-14 18:14:00,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887303218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:00,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:00,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:14:00,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979781643] [2021-12-14 18:14:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:00,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:14:00,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:14:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:14:00,446 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) [2021-12-14 18:14:09,171 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 [] [2021-12-14 18:14:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:14:09,694 INFO L93 Difference]: Finished difference Result 6097 states and 9098 transitions. [2021-12-14 18:14:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:14:09,695 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 [2021-12-14 18:14:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:14:09,716 INFO L225 Difference]: With dead ends: 6097 [2021-12-14 18:14:09,716 INFO L226 Difference]: Without dead ends: 4130 [2021-12-14 18:14:09,762 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 [2021-12-14 18:14:09,763 INFO L933 BasicCegarLoop]: 3282 mSDtfsCounter, 5174 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 2811 mSolverCounterSat, 4185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5542 SdHoareTripleChecker+Valid, 6972 SdHoareTripleChecker+Invalid, 6996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4185 IncrementalHoareTripleChecker+Valid, 2811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:14:09,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5542 Valid, 6972 Invalid, 6996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4185 Valid, 2811 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-12-14 18:14:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-12-14 18:14:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3486. [2021-12-14 18:14:09,871 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) [2021-12-14 18:14:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5084 transitions. [2021-12-14 18:14:09,885 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5084 transitions. Word has length 149 [2021-12-14 18:14:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:09,886 INFO L470 AbstractCegarLoop]: Abstraction has 3486 states and 5084 transitions. [2021-12-14 18:14:09,886 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) [2021-12-14 18:14:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5084 transitions. [2021-12-14 18:14:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-14 18:14:09,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:09,889 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] [2021-12-14 18:14:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:14:09,889 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -725484821, now seen corresponding path program 1 times [2021-12-14 18:14:09,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:09,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134687031] [2021-12-14 18:14:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:09,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:09,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:14:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:14:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:14:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:14:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 18:14:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:14:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:14:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 18:14:10,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134687031] [2021-12-14 18:14:10,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134687031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:10,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:10,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:14:10,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187653295] [2021-12-14 18:14:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:10,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:14:10,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:14:10,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:14:10,111 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) [2021-12-14 18:14:16,613 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 [] [2021-12-14 18:14:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:14:21,227 INFO L93 Difference]: Finished difference Result 10598 states and 15749 transitions. [2021-12-14 18:14:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:14:21,228 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 [2021-12-14 18:14:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:14:21,258 INFO L225 Difference]: With dead ends: 10598 [2021-12-14 18:14:21,259 INFO L226 Difference]: Without dead ends: 7152 [2021-12-14 18:14:21,271 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 [2021-12-14 18:14:21,272 INFO L933 BasicCegarLoop]: 3111 mSDtfsCounter, 4600 mSDsluCounter, 4358 mSDsCounter, 0 mSdLazyCounter, 3991 mSolverCounterSat, 3288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5027 SdHoareTripleChecker+Valid, 7469 SdHoareTripleChecker+Invalid, 7280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3288 IncrementalHoareTripleChecker+Valid, 3991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:14:21,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5027 Valid, 7469 Invalid, 7280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3288 Valid, 3991 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2021-12-14 18:14:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2021-12-14 18:14:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 6095. [2021-12-14 18:14:21,438 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) [2021-12-14 18:14:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 8862 transitions. [2021-12-14 18:14:21,462 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 8862 transitions. Word has length 156 [2021-12-14 18:14:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:21,462 INFO L470 AbstractCegarLoop]: Abstraction has 6095 states and 8862 transitions. [2021-12-14 18:14:21,462 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) [2021-12-14 18:14:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 8862 transitions. [2021-12-14 18:14:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-14 18:14:21,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:21,465 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] [2021-12-14 18:14:21,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:14:21,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2061735436, now seen corresponding path program 1 times [2021-12-14 18:14:21,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:21,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881731187] [2021-12-14 18:14:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:21,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:14:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:14:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:14:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:14:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 18:14:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:14:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:14:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:14:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 18:14:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 18:14:21,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:21,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881731187] [2021-12-14 18:14:21,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881731187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:21,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:21,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:14:21,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125530368] [2021-12-14 18:14:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:14:21,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:14:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:14:21,770 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) [2021-12-14 18:14:26,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:14:29,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:14:35,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:14:37,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []