/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:15:29,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:15:29,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:15:30,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:15:30,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:15:30,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:15:30,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:15:30,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:15:30,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:15:30,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:15:30,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:15:30,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:15:30,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:15:30,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:15:30,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:15:30,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:15:30,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:15:30,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:15:30,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:15:30,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:15:30,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:15:30,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:15:30,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:15:30,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:15:30,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:15:30,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:15:30,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:15:30,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:15:30,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:15:30,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:15:30,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:15:30,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:15:30,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:15:30,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:15:30,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:15:30,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:15:30,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:15:30,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:15:30,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:15:30,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:15:30,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:15:30,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:15:30,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:15:30,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:15:30,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:15:30,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:15:30,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:15:30,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:15:30,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:15:30,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:15:30,177 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:15:30,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:15:30,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:15:30,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:15:30,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:15:30,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:15:30,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:15:30,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:15:30,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:15:30,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:15:30,180 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:15:30,180 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:15:30,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:15:30,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:15:30,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:15:30,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:15:30,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:15:30,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:15:30,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:30,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:15:30,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:15:30,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:15:30,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:15:30,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:15:30,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:15:30,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:15:30,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:15:30,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:15:30,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:15:30,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:15:30,670 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:15:30,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-10-15 21:15:30,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e094f0466/01a1c8e1cfff4c0c809b20ec24f64e2d/FLAG30dc2b547 [2022-10-15 21:15:31,807 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:15:31,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-10-15 21:15:31,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e094f0466/01a1c8e1cfff4c0c809b20ec24f64e2d/FLAG30dc2b547 [2022-10-15 21:15:32,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e094f0466/01a1c8e1cfff4c0c809b20ec24f64e2d [2022-10-15 21:15:32,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:15:32,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:15:32,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:32,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:15:32,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:15:32,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:32" (1/1) ... [2022-10-15 21:15:32,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d69923f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:32, skipping insertion in model container [2022-10-15 21:15:32,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:32" (1/1) ... [2022-10-15 21:15:32,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:15:32,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:15:33,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i[152690,152703] [2022-10-15 21:15:33,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:33,586 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:15:33,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i[152690,152703] [2022-10-15 21:15:33,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:33,857 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:15:33,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33 WrapperNode [2022-10-15 21:15:33,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:33,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:33,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:15:33,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:15:33,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:33,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,026 INFO L138 Inliner]: procedures = 110, calls = 180, calls flagged for inlining = 54, calls inlined = 43, statements flattened = 639 [2022-10-15 21:15:34,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:34,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:15:34,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:15:34,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:15:34,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:15:34,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:15:34,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:15:34,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:15:34,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (1/1) ... [2022-10-15 21:15:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:34,182 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) [2022-10-15 21:15:34,193 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 [2022-10-15 21:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:15:34,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:15:34,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-15 21:15:34,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-15 21:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-10-15 21:15:34,248 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-10-15 21:15:34,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-15 21:15:34,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-15 21:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:15:34,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:15:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-15 21:15:34,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-15 21:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:15:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:15:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2022-10-15 21:15:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2022-10-15 21:15:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-10-15 21:15:34,251 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-10-15 21:15:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:15:34,251 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:15:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2022-10-15 21:15:34,251 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2022-10-15 21:15:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:15:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-10-15 21:15:34,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-10-15 21:15:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:15:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2022-10-15 21:15:34,252 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2022-10-15 21:15:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2022-10-15 21:15:34,253 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2022-10-15 21:15:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:15:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:15:34,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:15:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-15 21:15:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-15 21:15:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:15:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:15:34,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2022-10-15 21:15:34,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2022-10-15 21:15:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2022-10-15 21:15:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2022-10-15 21:15:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:15:34,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:15:34,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:15:34,819 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:15:34,824 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:15:35,239 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:15:35,674 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:15:35,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:15:35,698 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 21:15:35,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:35 BoogieIcfgContainer [2022-10-15 21:15:35,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:15:35,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:15:35,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:15:35,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:15:35,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:15:32" (1/3) ... [2022-10-15 21:15:35,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22afba5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:35, skipping insertion in model container [2022-10-15 21:15:35,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:33" (2/3) ... [2022-10-15 21:15:35,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22afba5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:35, skipping insertion in model container [2022-10-15 21:15:35,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:35" (3/3) ... [2022-10-15 21:15:35,720 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2022-10-15 21:15:35,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:15:35,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-15 21:15:35,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:15:35,877 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a940d26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:15:35,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-10-15 21:15:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 270 states, 200 states have (on average 1.435) internal successors, (287), 223 states have internal predecessors, (287), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-10-15 21:15:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 21:15:35,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:35,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:35,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -781584720, now seen corresponding path program 1 times [2022-10-15 21:15:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:35,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276103701] [2022-10-15 21:15:35,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:35,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:15:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:36,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276103701] [2022-10-15 21:15:36,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276103701] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:36,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:36,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:36,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260877371] [2022-10-15 21:15:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:36,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:15:36,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:15:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:15:36,441 INFO L87 Difference]: Start difference. First operand has 270 states, 200 states have (on average 1.435) internal successors, (287), 223 states have internal predecessors, (287), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:15:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:36,973 INFO L93 Difference]: Finished difference Result 593 states and 818 transitions. [2022-10-15 21:15:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:15:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-10-15 21:15:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:36,994 INFO L225 Difference]: With dead ends: 593 [2022-10-15 21:15:36,994 INFO L226 Difference]: Without dead ends: 311 [2022-10-15 21:15:37,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:15:37,007 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 145 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:37,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 653 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 21:15:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-10-15 21:15:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 251. [2022-10-15 21:15:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 189 states have (on average 1.380952380952381) internal successors, (261), 205 states have internal predecessors, (261), 31 states have call successors, (31), 15 states have call predecessors, (31), 15 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-10-15 21:15:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 323 transitions. [2022-10-15 21:15:37,092 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 323 transitions. Word has length 34 [2022-10-15 21:15:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:37,093 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 323 transitions. [2022-10-15 21:15:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:15:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 323 transitions. [2022-10-15 21:15:37,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-15 21:15:37,096 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:37,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:37,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:15:37,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1707944242, now seen corresponding path program 1 times [2022-10-15 21:15:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974880741] [2022-10-15 21:15:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:37,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:37,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:15:37,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:37,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974880741] [2022-10-15 21:15:37,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974880741] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:37,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:37,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127736638] [2022-10-15 21:15:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:37,333 INFO L87 Difference]: Start difference. First operand 251 states and 323 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:15:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:37,822 INFO L93 Difference]: Finished difference Result 587 states and 762 transitions. [2022-10-15 21:15:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-10-15 21:15:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:37,833 INFO L225 Difference]: With dead ends: 587 [2022-10-15 21:15:37,834 INFO L226 Difference]: Without dead ends: 342 [2022-10-15 21:15:37,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:37,843 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 306 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:37,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 675 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 21:15:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-10-15 21:15:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 282. [2022-10-15 21:15:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 215 states have (on average 1.3674418604651162) internal successors, (294), 231 states have internal predecessors, (294), 33 states have call successors, (33), 18 states have call predecessors, (33), 18 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-10-15 21:15:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 360 transitions. [2022-10-15 21:15:37,921 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 360 transitions. Word has length 34 [2022-10-15 21:15:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:37,922 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 360 transitions. [2022-10-15 21:15:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:15:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 360 transitions. [2022-10-15 21:15:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-15 21:15:37,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:37,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:37,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:15:37,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash -344179967, now seen corresponding path program 1 times [2022-10-15 21:15:37,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:37,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926948291] [2022-10-15 21:15:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:37,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 21:15:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:38,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926948291] [2022-10-15 21:15:38,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926948291] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:38,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:38,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525260986] [2022-10-15 21:15:38,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:38,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:38,448 INFO L87 Difference]: Start difference. First operand 282 states and 360 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:15:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:39,131 INFO L93 Difference]: Finished difference Result 664 states and 870 transitions. [2022-10-15 21:15:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-10-15 21:15:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:39,139 INFO L225 Difference]: With dead ends: 664 [2022-10-15 21:15:39,140 INFO L226 Difference]: Without dead ends: 662 [2022-10-15 21:15:39,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:39,142 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 753 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:39,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 843 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:15:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-10-15 21:15:39,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 528. [2022-10-15 21:15:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 416 states have (on average 1.375) internal successors, (572), 433 states have internal predecessors, (572), 63 states have call successors, (63), 33 states have call predecessors, (63), 33 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-10-15 21:15:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 698 transitions. [2022-10-15 21:15:39,203 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 698 transitions. Word has length 78 [2022-10-15 21:15:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:39,204 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 698 transitions. [2022-10-15 21:15:39,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:15:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 698 transitions. [2022-10-15 21:15:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-15 21:15:39,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:39,210 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:39,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:15:39,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -770125314, now seen corresponding path program 1 times [2022-10-15 21:15:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5185453] [2022-10-15 21:15:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-15 21:15:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-15 21:15:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-15 21:15:39,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:39,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5185453] [2022-10-15 21:15:39,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5185453] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:39,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:39,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602782317] [2022-10-15 21:15:39,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:39,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:39,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:39,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:39,579 INFO L87 Difference]: Start difference. First operand 528 states and 698 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-15 21:15:40,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:40,225 INFO L93 Difference]: Finished difference Result 1422 states and 1884 transitions. [2022-10-15 21:15:40,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:40,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 96 [2022-10-15 21:15:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:40,233 INFO L225 Difference]: With dead ends: 1422 [2022-10-15 21:15:40,233 INFO L226 Difference]: Without dead ends: 914 [2022-10-15 21:15:40,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:40,237 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 804 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:40,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 789 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 21:15:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-10-15 21:15:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 724. [2022-10-15 21:15:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 578 states have (on average 1.356401384083045) internal successors, (784), 596 states have internal predecessors, (784), 82 states have call successors, (82), 48 states have call predecessors, (82), 48 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-10-15 21:15:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 948 transitions. [2022-10-15 21:15:40,300 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 948 transitions. Word has length 96 [2022-10-15 21:15:40,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:40,301 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 948 transitions. [2022-10-15 21:15:40,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-15 21:15:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 948 transitions. [2022-10-15 21:15:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-15 21:15:40,304 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:40,304 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:40,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:15:40,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1119035377, now seen corresponding path program 1 times [2022-10-15 21:15:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:40,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691091517] [2022-10-15 21:15:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:40,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-15 21:15:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:40,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691091517] [2022-10-15 21:15:40,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691091517] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:40,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:40,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710242354] [2022-10-15 21:15:40,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:40,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:40,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:40,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:40,552 INFO L87 Difference]: Start difference. First operand 724 states and 948 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 21:15:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:41,004 INFO L93 Difference]: Finished difference Result 1592 states and 2152 transitions. [2022-10-15 21:15:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:15:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 95 [2022-10-15 21:15:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:41,012 INFO L225 Difference]: With dead ends: 1592 [2022-10-15 21:15:41,012 INFO L226 Difference]: Without dead ends: 905 [2022-10-15 21:15:41,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:41,017 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 155 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:41,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 828 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 21:15:41,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-10-15 21:15:41,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 727. [2022-10-15 21:15:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 581 states have (on average 1.3545611015490533) internal successors, (787), 599 states have internal predecessors, (787), 82 states have call successors, (82), 48 states have call predecessors, (82), 48 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-10-15 21:15:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 951 transitions. [2022-10-15 21:15:41,082 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 951 transitions. Word has length 95 [2022-10-15 21:15:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:41,083 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 951 transitions. [2022-10-15 21:15:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 21:15:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 951 transitions. [2022-10-15 21:15:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-15 21:15:41,086 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:41,087 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:41,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:15:41,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -330432361, now seen corresponding path program 1 times [2022-10-15 21:15:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:41,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033260578] [2022-10-15 21:15:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-15 21:15:41,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033260578] [2022-10-15 21:15:41,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033260578] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:41,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:41,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:15:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757249627] [2022-10-15 21:15:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:41,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:15:41,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:15:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:41,638 INFO L87 Difference]: Start difference. First operand 727 states and 951 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:15:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:42,449 INFO L93 Difference]: Finished difference Result 2324 states and 3110 transitions. [2022-10-15 21:15:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:15:42,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 96 [2022-10-15 21:15:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:42,463 INFO L225 Difference]: With dead ends: 2324 [2022-10-15 21:15:42,463 INFO L226 Difference]: Without dead ends: 1634 [2022-10-15 21:15:42,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:15:42,470 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 504 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:42,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1025 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:15:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-10-15 21:15:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1395. [2022-10-15 21:15:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1113 states have (on average 1.326145552560647) internal successors, (1476), 1137 states have internal predecessors, (1476), 164 states have call successors, (164), 93 states have call predecessors, (164), 102 states have return successors, (200), 170 states have call predecessors, (200), 164 states have call successors, (200) [2022-10-15 21:15:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1840 transitions. [2022-10-15 21:15:42,590 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1840 transitions. Word has length 96 [2022-10-15 21:15:42,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:42,592 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1840 transitions. [2022-10-15 21:15:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:15:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1840 transitions. [2022-10-15 21:15:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-15 21:15:42,598 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:42,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:15:42,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1181924454, now seen corresponding path program 1 times [2022-10-15 21:15:42,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:42,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761518042] [2022-10-15 21:15:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 21:15:42,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:42,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761518042] [2022-10-15 21:15:42,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761518042] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:42,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737203768] [2022-10-15 21:15:42,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:42,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:42,848 INFO L87 Difference]: Start difference. First operand 1395 states and 1840 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:15:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:43,650 INFO L93 Difference]: Finished difference Result 2530 states and 3307 transitions. [2022-10-15 21:15:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 93 [2022-10-15 21:15:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:43,664 INFO L225 Difference]: With dead ends: 2530 [2022-10-15 21:15:43,665 INFO L226 Difference]: Without dead ends: 1614 [2022-10-15 21:15:43,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:43,677 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 495 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:43,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 992 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:15:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-10-15 21:15:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1361. [2022-10-15 21:15:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1079 states have (on average 1.3067655236329936) internal successors, (1410), 1103 states have internal predecessors, (1410), 164 states have call successors, (164), 93 states have call predecessors, (164), 102 states have return successors, (200), 170 states have call predecessors, (200), 164 states have call successors, (200) [2022-10-15 21:15:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1774 transitions. [2022-10-15 21:15:43,810 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1774 transitions. Word has length 93 [2022-10-15 21:15:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:43,811 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1774 transitions. [2022-10-15 21:15:43,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:15:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1774 transitions. [2022-10-15 21:15:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-15 21:15:43,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:43,815 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:43,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:15:43,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:43,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash -972826617, now seen corresponding path program 1 times [2022-10-15 21:15:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:43,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230191006] [2022-10-15 21:15:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:43,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-15 21:15:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:15:44,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:44,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230191006] [2022-10-15 21:15:44,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230191006] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:44,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:44,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:15:44,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740343822] [2022-10-15 21:15:44,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:44,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:15:44,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:15:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:44,345 INFO L87 Difference]: Start difference. First operand 1361 states and 1774 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:15:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:45,159 INFO L93 Difference]: Finished difference Result 2907 states and 3807 transitions. [2022-10-15 21:15:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:15:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 114 [2022-10-15 21:15:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:45,172 INFO L225 Difference]: With dead ends: 2907 [2022-10-15 21:15:45,173 INFO L226 Difference]: Without dead ends: 1583 [2022-10-15 21:15:45,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:45,179 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 714 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:45,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 871 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:15:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-10-15 21:15:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1346. [2022-10-15 21:15:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1064 states have (on average 1.2998120300751879) internal successors, (1383), 1088 states have internal predecessors, (1383), 164 states have call successors, (164), 93 states have call predecessors, (164), 102 states have return successors, (200), 170 states have call predecessors, (200), 164 states have call successors, (200) [2022-10-15 21:15:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1747 transitions. [2022-10-15 21:15:45,289 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1747 transitions. Word has length 114 [2022-10-15 21:15:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:45,290 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 1747 transitions. [2022-10-15 21:15:45,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:15:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1747 transitions. [2022-10-15 21:15:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-15 21:15:45,292 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:45,293 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 21:15:45,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1944649240, now seen corresponding path program 1 times [2022-10-15 21:15:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:45,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722472860] [2022-10-15 21:15:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:45,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-15 21:15:45,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:45,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722472860] [2022-10-15 21:15:45,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722472860] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:15:45,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311036839] [2022-10-15 21:15:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:45,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:45,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:45,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:15:45,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:15:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:45,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:15:45,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:15:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 21:15:45,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:15:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-15 21:15:46,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311036839] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:15:46,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:15:46,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-10-15 21:15:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064954401] [2022-10-15 21:15:46,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:15:46,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 21:15:46,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 21:15:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:15:46,135 INFO L87 Difference]: Start difference. First operand 1346 states and 1747 transitions. Second operand has 9 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-10-15 21:15:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:48,391 INFO L93 Difference]: Finished difference Result 4682 states and 6036 transitions. [2022-10-15 21:15:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 21:15:48,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 103 [2022-10-15 21:15:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:48,420 INFO L225 Difference]: With dead ends: 4682 [2022-10-15 21:15:48,420 INFO L226 Difference]: Without dead ends: 4681 [2022-10-15 21:15:48,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-10-15 21:15:48,424 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 2264 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:48,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1810 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-15 21:15:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2022-10-15 21:15:48,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3912. [2022-10-15 21:15:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3114 states have (on average 1.300256904303147) internal successors, (4049), 3156 states have internal predecessors, (4049), 482 states have call successors, (482), 273 states have call predecessors, (482), 300 states have return successors, (590), 500 states have call predecessors, (590), 482 states have call successors, (590) [2022-10-15 21:15:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5121 transitions. [2022-10-15 21:15:48,738 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5121 transitions. Word has length 103 [2022-10-15 21:15:48,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:48,738 INFO L495 AbstractCegarLoop]: Abstraction has 3912 states and 5121 transitions. [2022-10-15 21:15:48,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-10-15 21:15:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5121 transitions. [2022-10-15 21:15:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-15 21:15:48,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:48,742 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:48,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:15:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:48,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash 154584823, now seen corresponding path program 1 times [2022-10-15 21:15:48,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:48,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469387661] [2022-10-15 21:15:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-15 21:15:49,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:49,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469387661] [2022-10-15 21:15:49,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469387661] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:15:49,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39754489] [2022-10-15 21:15:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:49,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:49,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:49,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:15:49,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:15:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:49,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:15:49,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:15:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 21:15:49,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:15:49,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39754489] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:49,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:15:49,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-15 21:15:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511065306] [2022-10-15 21:15:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:15:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:15:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:49,663 INFO L87 Difference]: Start difference. First operand 3912 states and 5121 transitions. Second operand has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:15:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:50,131 INFO L93 Difference]: Finished difference Result 3926 states and 5121 transitions. [2022-10-15 21:15:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:15:50,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 104 [2022-10-15 21:15:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:50,157 INFO L225 Difference]: With dead ends: 3926 [2022-10-15 21:15:50,158 INFO L226 Difference]: Without dead ends: 3925 [2022-10-15 21:15:50,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:50,162 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 665 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:50,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 738 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:15:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-10-15 21:15:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3911. [2022-10-15 21:15:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3114 states have (on average 1.298330122029544) internal successors, (4043), 3155 states have internal predecessors, (4043), 482 states have call successors, (482), 273 states have call predecessors, (482), 300 states have return successors, (590), 500 states have call predecessors, (590), 482 states have call successors, (590) [2022-10-15 21:15:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5115 transitions. [2022-10-15 21:15:50,524 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5115 transitions. Word has length 104 [2022-10-15 21:15:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:50,525 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 5115 transitions. [2022-10-15 21:15:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:15:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5115 transitions. [2022-10-15 21:15:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-15 21:15:50,529 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:50,529 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:50,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:15:50,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 21:15:50,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2104096904, now seen corresponding path program 1 times [2022-10-15 21:15:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034999427] [2022-10-15 21:15:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 21:15:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:51,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:15:51,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034999427] [2022-10-15 21:15:51,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034999427] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:51,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:51,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327526959] [2022-10-15 21:15:51,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:51,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:15:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:15:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:51,072 INFO L87 Difference]: Start difference. First operand 3911 states and 5115 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:51,911 INFO L93 Difference]: Finished difference Result 4909 states and 6483 transitions. [2022-10-15 21:15:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:15:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 132 [2022-10-15 21:15:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:51,956 INFO L225 Difference]: With dead ends: 4909 [2022-10-15 21:15:51,956 INFO L226 Difference]: Without dead ends: 4907 [2022-10-15 21:15:51,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:51,962 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 316 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:51,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 805 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 21:15:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2022-10-15 21:15:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3965. [2022-10-15 21:15:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3168 states have (on average 1.2989267676767677) internal successors, (4115), 3209 states have internal predecessors, (4115), 482 states have call successors, (482), 273 states have call predecessors, (482), 300 states have return successors, (590), 500 states have call predecessors, (590), 482 states have call successors, (590) [2022-10-15 21:15:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5187 transitions. [2022-10-15 21:15:52,435 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5187 transitions. Word has length 132 [2022-10-15 21:15:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:52,435 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5187 transitions. [2022-10-15 21:15:52,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5187 transitions. [2022-10-15 21:15:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-10-15 21:15:52,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:52,441 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 21:15:52,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:52,442 INFO L85 PathProgramCache]: Analyzing trace with hash -802495921, now seen corresponding path program 1 times [2022-10-15 21:15:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:52,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101041410] [2022-10-15 21:15:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 21:15:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:15:52,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:52,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101041410] [2022-10-15 21:15:52,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101041410] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:52,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:52,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:15:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498518426] [2022-10-15 21:15:52,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:52,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:15:52,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:52,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:15:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:52,778 INFO L87 Difference]: Start difference. First operand 3965 states and 5187 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:53,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:53,918 INFO L93 Difference]: Finished difference Result 7224 states and 9797 transitions. [2022-10-15 21:15:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 21:15:53,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 133 [2022-10-15 21:15:53,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:53,954 INFO L225 Difference]: With dead ends: 7224 [2022-10-15 21:15:53,955 INFO L226 Difference]: Without dead ends: 5077 [2022-10-15 21:15:53,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:15:53,966 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 215 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:53,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1151 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:15:53,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-10-15 21:15:54,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3992. [2022-10-15 21:15:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3195 states have (on average 1.2964006259780907) internal successors, (4142), 3236 states have internal predecessors, (4142), 482 states have call successors, (482), 273 states have call predecessors, (482), 300 states have return successors, (590), 500 states have call predecessors, (590), 482 states have call successors, (590) [2022-10-15 21:15:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5214 transitions. [2022-10-15 21:15:54,341 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5214 transitions. Word has length 133 [2022-10-15 21:15:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:54,342 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 5214 transitions. [2022-10-15 21:15:54,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5214 transitions. [2022-10-15 21:15:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-10-15 21:15:54,348 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:54,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 21:15:54,350 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_set_removeErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 551715549, now seen corresponding path program 1 times [2022-10-15 21:15:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:54,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098101782] [2022-10-15 21:15:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 21:15:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:15:54,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:54,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098101782] [2022-10-15 21:15:54,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098101782] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:54,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:54,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:15:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138306305] [2022-10-15 21:15:54,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:54,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:15:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:54,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:15:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:54,769 INFO L87 Difference]: Start difference. First operand 3992 states and 5214 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:55,845 INFO L93 Difference]: Finished difference Result 5207 states and 6942 transitions. [2022-10-15 21:15:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 21:15:55,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 137 [2022-10-15 21:15:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:55,876 INFO L225 Difference]: With dead ends: 5207 [2022-10-15 21:15:55,876 INFO L226 Difference]: Without dead ends: 5204 [2022-10-15 21:15:55,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:15:55,882 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 415 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:55,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1148 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 21:15:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2022-10-15 21:15:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 4082. [2022-10-15 21:15:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 3285 states have (on average 1.2992389649923897) internal successors, (4268), 3326 states have internal predecessors, (4268), 482 states have call successors, (482), 273 states have call predecessors, (482), 300 states have return successors, (590), 500 states have call predecessors, (590), 482 states have call successors, (590) [2022-10-15 21:15:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 5340 transitions. [2022-10-15 21:15:56,291 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 5340 transitions. Word has length 137 [2022-10-15 21:15:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:56,292 INFO L495 AbstractCegarLoop]: Abstraction has 4082 states and 5340 transitions. [2022-10-15 21:15:56,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 5340 transitions. [2022-10-15 21:15:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-10-15 21:15:56,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:56,296 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 21:15:56,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_set_removeErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:15:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash 551715622, now seen corresponding path program 1 times [2022-10-15 21:15:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:56,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212687959] [2022-10-15 21:15:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:56,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:15:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:15:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 21:15:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:15:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:15:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:57,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212687959] [2022-10-15 21:15:57,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212687959] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:57,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:57,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-15 21:15:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402566797] [2022-10-15 21:15:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:57,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 21:15:57,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 21:15:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:15:57,108 INFO L87 Difference]: Start difference. First operand 4082 states and 5340 transitions. Second operand has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:16:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:00,889 INFO L93 Difference]: Finished difference Result 13538 states and 18540 transitions. [2022-10-15 21:16:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-15 21:16:00,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 137 [2022-10-15 21:16:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:00,947 INFO L225 Difference]: With dead ends: 13538 [2022-10-15 21:16:00,948 INFO L226 Difference]: Without dead ends: 11274 [2022-10-15 21:16:00,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2022-10-15 21:16:00,961 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 2168 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:00,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 1653 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-15 21:16:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2022-10-15 21:16:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 9030. [2022-10-15 21:16:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9030 states, 7259 states have (on average 1.285989805758369) internal successors, (9335), 7327 states have internal predecessors, (9335), 1033 states have call successors, (1033), 543 states have call predecessors, (1033), 723 states have return successors, (1870), 1195 states have call predecessors, (1870), 1033 states have call successors, (1870) [2022-10-15 21:16:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9030 states to 9030 states and 12238 transitions. [2022-10-15 21:16:01,859 INFO L78 Accepts]: Start accepts. Automaton has 9030 states and 12238 transitions. Word has length 137 [2022-10-15 21:16:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:01,860 INFO L495 AbstractCegarLoop]: Abstraction has 9030 states and 12238 transitions. [2022-10-15 21:16:01,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:16:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9030 states and 12238 transitions. [2022-10-15 21:16:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-15 21:16:01,864 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:01,864 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:01,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 21:16:01,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_set_removeErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:16:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:01,866 INFO L85 PathProgramCache]: Analyzing trace with hash -76686807, now seen corresponding path program 1 times [2022-10-15 21:16:01,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:01,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578611457] [2022-10-15 21:16:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:16:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:16:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:16:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 21:16:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:16:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578611457] [2022-10-15 21:16:02,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578611457] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:02,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:02,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:16:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123388081] [2022-10-15 21:16:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:02,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:16:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:16:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:02,173 INFO L87 Difference]: Start difference. First operand 9030 states and 12238 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:16:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:03,720 INFO L93 Difference]: Finished difference Result 11067 states and 15127 transitions. [2022-10-15 21:16:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 21:16:03,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 138 [2022-10-15 21:16:03,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:03,770 INFO L225 Difference]: With dead ends: 11067 [2022-10-15 21:16:03,770 INFO L226 Difference]: Without dead ends: 11064 [2022-10-15 21:16:03,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:16:03,778 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 234 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:03,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1364 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:16:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11064 states. [2022-10-15 21:16:04,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11064 to 9137. [2022-10-15 21:16:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9137 states, 7367 states have (on average 1.2830188679245282) internal successors, (9452), 7434 states have internal predecessors, (9452), 1033 states have call successors, (1033), 543 states have call predecessors, (1033), 723 states have return successors, (1870), 1195 states have call predecessors, (1870), 1033 states have call successors, (1870) [2022-10-15 21:16:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9137 states to 9137 states and 12355 transitions. [2022-10-15 21:16:04,686 INFO L78 Accepts]: Start accepts. Automaton has 9137 states and 12355 transitions. Word has length 138 [2022-10-15 21:16:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:04,687 INFO L495 AbstractCegarLoop]: Abstraction has 9137 states and 12355 transitions. [2022-10-15 21:16:04,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:16:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 9137 states and 12355 transitions. [2022-10-15 21:16:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-15 21:16:04,691 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:04,692 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:04,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-15 21:16:04,692 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_set_removeErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:16:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash 3783413, now seen corresponding path program 1 times [2022-10-15 21:16:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:04,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270042998] [2022-10-15 21:16:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:04,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:16:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:16:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:16:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-15 21:16:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:16:05,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:05,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270042998] [2022-10-15 21:16:05,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270042998] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:05,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:05,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:16:05,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619722954] [2022-10-15 21:16:05,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:16:05,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:16:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:05,015 INFO L87 Difference]: Start difference. First operand 9137 states and 12355 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:16:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:07,686 INFO L93 Difference]: Finished difference Result 24990 states and 35911 transitions. [2022-10-15 21:16:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 21:16:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 139 [2022-10-15 21:16:07,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:07,787 INFO L225 Difference]: With dead ends: 24990 [2022-10-15 21:16:07,787 INFO L226 Difference]: Without dead ends: 17671 [2022-10-15 21:16:07,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:16:07,834 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 606 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:07,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1713 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 21:16:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2022-10-15 21:16:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 15325. [2022-10-15 21:16:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15325 states, 12248 states have (on average 1.2684519921619857) internal successors, (15536), 12377 states have internal predecessors, (15536), 1846 states have call successors, (1846), 948 states have call predecessors, (1846), 1218 states have return successors, (4231), 2071 states have call predecessors, (4231), 1846 states have call successors, (4231) [2022-10-15 21:16:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 21613 transitions. [2022-10-15 21:16:09,357 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 21613 transitions. Word has length 139 [2022-10-15 21:16:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:09,358 INFO L495 AbstractCegarLoop]: Abstraction has 15325 states and 21613 transitions. [2022-10-15 21:16:09,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:16:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 21613 transitions. [2022-10-15 21:16:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-15 21:16:09,366 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:09,366 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:09,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-15 21:16:09,366 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-15 21:16:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2039774503, now seen corresponding path program 1 times [2022-10-15 21:16:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:09,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540084985] [2022-10-15 21:16:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:09,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:16:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:16:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:16:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-15 21:16:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:16:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:16:09,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:09,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540084985] [2022-10-15 21:16:09,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540084985] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:16:09,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648280342] [2022-10-15 21:16:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:09,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:16:09,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:16:09,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:16:09,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:16:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:10,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 21:16:10,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:16:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-15 21:16:10,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:16:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-15 21:16:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648280342] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-15 21:16:10,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-15 21:16:10,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 18 [2022-10-15 21:16:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061190983] [2022-10-15 21:16:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:16:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:10,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:16:10,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-10-15 21:16:10,886 INFO L87 Difference]: Start difference. First operand 15325 states and 21613 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:16:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:13,927 INFO L93 Difference]: Finished difference Result 35756 states and 51952 transitions. [2022-10-15 21:16:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 21:16:13,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 139 [2022-10-15 21:16:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:14,071 INFO L225 Difference]: With dead ends: 35756 [2022-10-15 21:16:14,071 INFO L226 Difference]: Without dead ends: 22249 [2022-10-15 21:16:14,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 292 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-10-15 21:16:14,158 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1122 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:14,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1125 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 21:16:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22249 states.