/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 [2022-10-16 13:13:02,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 13:13:02,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 13:13:02,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 13:13:02,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 13:13:02,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 13:13:02,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 13:13:02,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 13:13:02,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 13:13:02,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 13:13:02,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 13:13:02,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 13:13:02,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 13:13:02,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 13:13:02,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 13:13:02,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 13:13:02,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 13:13:02,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 13:13:02,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 13:13:02,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 13:13:02,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 13:13:02,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 13:13:02,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 13:13:02,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 13:13:02,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 13:13:02,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 13:13:02,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 13:13:02,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 13:13:02,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 13:13:02,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 13:13:02,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 13:13:02,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 13:13:02,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 13:13:02,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 13:13:02,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 13:13:02,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 13:13:02,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 13:13:02,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 13:13:02,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 13:13:02,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 13:13:02,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 13:13:02,307 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 [2022-10-16 13:13:02,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 13:13:02,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 13:13:02,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 13:13:02,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 13:13:02,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 13:13:02,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 13:13:02,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 13:13:02,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 13:13:02,375 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 13:13:02,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 13:13:02,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 13:13:02,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 13:13:02,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 13:13:02,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 13:13:02,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 13:13:02,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 13:13:02,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 13:13:02,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 13:13:02,378 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 13:13:02,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 13:13:02,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 13:13:02,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 13:13:02,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 13:13:02,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 13:13:02,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 13:13:02,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 13:13:02,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:13:02,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 13:13:02,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 13:13:02,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 13:13:02,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 13:13:02,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 13:13:02,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 13:13:02,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 13:13:02,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 13:13:02,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 13:13:02,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 13:13:02,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 13:13:02,849 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 13:13:02,851 INFO L432 ainManager$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 [2022-10-16 13:13:02,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c9d1279/08b5d88ecd1e4a4d870de512ce19479b/FLAG6e166015e [2022-10-16 13:13:04,076 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 13:13:04,077 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 [2022-10-16 13:13:04,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c9d1279/08b5d88ecd1e4a4d870de512ce19479b/FLAG6e166015e [2022-10-16 13:13:04,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5c9d1279/08b5d88ecd1e4a4d870de512ce19479b [2022-10-16 13:13:04,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 13:13:04,540 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 13:13:04,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 13:13:04,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 13:13:04,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 13:13:04,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:13:04" (1/1) ... [2022-10-16 13:13:04,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba10bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:04, skipping insertion in model container [2022-10-16 13:13:04,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:13:04" (1/1) ... [2022-10-16 13:13:04,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 13:13:04,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 13:13:05,568 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] [2022-10-16 13:13:05,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:13:05,947 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 13:13:06,096 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] [2022-10-16 13:13:06,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:13:06,193 INFO L208 MainTranslator]: Completed translation [2022-10-16 13:13:06,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06 WrapperNode [2022-10-16 13:13:06,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 13:13:06,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 13:13:06,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 13:13:06,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 13:13:06,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,295 INFO L138 Inliner]: procedures = 110, calls = 180, calls flagged for inlining = 54, calls inlined = 43, statements flattened = 639 [2022-10-16 13:13:06,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 13:13:06,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 13:13:06,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 13:13:06,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 13:13:06,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 13:13:06,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 13:13:06,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 13:13:06,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 13:13:06,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (1/1) ... [2022-10-16 13:13:06,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:13:06,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:13:06,514 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) [2022-10-16 13:13:06,536 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 [2022-10-16 13:13:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-16 13:13:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-16 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 13:13:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-10-16 13:13:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-10-16 13:13:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-16 13:13:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-16 13:13:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 13:13:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 13:13:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-16 13:13:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-16 13:13:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 13:13:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-16 13:13:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-16 13:13:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2022-10-16 13:13:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2022-10-16 13:13:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-10-16 13:13:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-10-16 13:13:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 13:13:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 13:13:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2022-10-16 13:13:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2022-10-16 13:13:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 13:13:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-10-16 13:13:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-10-16 13:13:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 13:13:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2022-10-16 13:13:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2022-10-16 13:13:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2022-10-16 13:13:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2022-10-16 13:13:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 13:13:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 13:13:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 13:13:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-16 13:13:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-16 13:13:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 13:13:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 13:13:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2022-10-16 13:13:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2022-10-16 13:13:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2022-10-16 13:13:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2022-10-16 13:13:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 13:13:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 13:13:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 13:13:07,018 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 13:13:07,026 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 13:13:07,503 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-16 13:13:08,011 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 13:13:08,034 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 13:13:08,035 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 13:13:08,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:13:08 BoogieIcfgContainer [2022-10-16 13:13:08,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 13:13:08,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 13:13:08,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 13:13:08,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 13:13:08,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:13:04" (1/3) ... [2022-10-16 13:13:08,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9454d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:13:08, skipping insertion in model container [2022-10-16 13:13:08,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:13:06" (2/3) ... [2022-10-16 13:13:08,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9454d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:13:08, skipping insertion in model container [2022-10-16 13:13:08,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:13:08" (3/3) ... [2022-10-16 13:13:08,056 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 [2022-10-16 13:13:08,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 13:13:08,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-16 13:13:08,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 13:13:08,211 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;@2a033509, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 13:13:08,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-10-16 13:13:08,224 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) [2022-10-16 13:13:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 13:13:08,242 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:08,243 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] [2022-10-16 13:13:08,243 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)] === [2022-10-16 13:13:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash -781584720, now seen corresponding path program 1 times [2022-10-16 13:13:08,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:08,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733039160] [2022-10-16 13:13:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 13:13:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:08,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733039160] [2022-10-16 13:13:08,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733039160] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:08,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:08,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:13:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741870967] [2022-10-16 13:13:08,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:08,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:13:08,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:13:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:13:08,853 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) [2022-10-16 13:13:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:09,437 INFO L93 Difference]: Finished difference Result 593 states and 818 transitions. [2022-10-16 13:13:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:13:09,440 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 [2022-10-16 13:13:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:09,477 INFO L225 Difference]: With dead ends: 593 [2022-10-16 13:13:09,478 INFO L226 Difference]: Without dead ends: 311 [2022-10-16 13:13:09,486 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 [2022-10-16 13:13:09,490 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 145 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:09,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 651 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:13:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-10-16 13:13:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 251. [2022-10-16 13:13:09,568 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) [2022-10-16 13:13:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 323 transitions. [2022-10-16 13:13:09,573 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 323 transitions. Word has length 34 [2022-10-16 13:13:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 323 transitions. [2022-10-16 13:13:09,574 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) [2022-10-16 13:13:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 323 transitions. [2022-10-16 13:13:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 13:13:09,578 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:09,578 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] [2022-10-16 13:13:09,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 13:13:09,579 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)] === [2022-10-16 13:13:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1707944242, now seen corresponding path program 1 times [2022-10-16 13:13:09,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:09,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084607734] [2022-10-16 13:13:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:09,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:09,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 13:13:09,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:09,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084607734] [2022-10-16 13:13:09,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084607734] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:09,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:09,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:13:09,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813397695] [2022-10-16 13:13:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:09,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:13:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:13:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:13:09,841 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) [2022-10-16 13:13:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:10,301 INFO L93 Difference]: Finished difference Result 587 states and 762 transitions. [2022-10-16 13:13:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:13:10,302 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 [2022-10-16 13:13:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:10,306 INFO L225 Difference]: With dead ends: 587 [2022-10-16 13:13:10,306 INFO L226 Difference]: Without dead ends: 342 [2022-10-16 13:13:10,308 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 [2022-10-16 13:13:10,310 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 [2022-10-16 13:13:10,310 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] [2022-10-16 13:13:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-10-16 13:13:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 282. [2022-10-16 13:13:10,344 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) [2022-10-16 13:13:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 360 transitions. [2022-10-16 13:13:10,348 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 360 transitions. Word has length 34 [2022-10-16 13:13:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:10,349 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 360 transitions. [2022-10-16 13:13:10,349 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) [2022-10-16 13:13:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 360 transitions. [2022-10-16 13:13:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 13:13:10,353 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:10,353 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] [2022-10-16 13:13:10,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 13:13:10,354 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)] === [2022-10-16 13:13:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash -344179967, now seen corresponding path program 1 times [2022-10-16 13:13:10,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:10,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637166656] [2022-10-16 13:13:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 13:13:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637166656] [2022-10-16 13:13:10,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637166656] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:10,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:10,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:13:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923636331] [2022-10-16 13:13:10,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:13:10,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:13:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:13:10,751 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) [2022-10-16 13:13:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:11,422 INFO L93 Difference]: Finished difference Result 664 states and 870 transitions. [2022-10-16 13:13:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:13:11,423 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 [2022-10-16 13:13:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:11,430 INFO L225 Difference]: With dead ends: 664 [2022-10-16 13:13:11,431 INFO L226 Difference]: Without dead ends: 662 [2022-10-16 13:13:11,431 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 [2022-10-16 13:13:11,433 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 754 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:11,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 841 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 13:13:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-10-16 13:13:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 528. [2022-10-16 13:13:11,494 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) [2022-10-16 13:13:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 698 transitions. [2022-10-16 13:13:11,500 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 698 transitions. Word has length 78 [2022-10-16 13:13:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:11,501 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 698 transitions. [2022-10-16 13:13:11,502 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) [2022-10-16 13:13:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 698 transitions. [2022-10-16 13:13:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 13:13:11,507 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:11,507 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] [2022-10-16 13:13:11,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 13:13:11,508 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)] === [2022-10-16 13:13:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -770125314, now seen corresponding path program 1 times [2022-10-16 13:13:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:11,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232199640] [2022-10-16 13:13:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:13:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-10-16 13:13:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-16 13:13:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:11,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232199640] [2022-10-16 13:13:11,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232199640] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:11,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:11,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:13:11,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464906979] [2022-10-16 13:13:11,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:11,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:13:11,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:13:11,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:13:11,757 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) [2022-10-16 13:13:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:12,385 INFO L93 Difference]: Finished difference Result 1422 states and 1884 transitions. [2022-10-16 13:13:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:13:12,386 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 [2022-10-16 13:13:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:12,397 INFO L225 Difference]: With dead ends: 1422 [2022-10-16 13:13:12,397 INFO L226 Difference]: Without dead ends: 914 [2022-10-16 13:13:12,400 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 [2022-10-16 13:13:12,406 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 804 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:12,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 784 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:13:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-10-16 13:13:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 724. [2022-10-16 13:13:12,501 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) [2022-10-16 13:13:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 948 transitions. [2022-10-16 13:13:12,509 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 948 transitions. Word has length 96 [2022-10-16 13:13:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:12,511 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 948 transitions. [2022-10-16 13:13:12,511 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) [2022-10-16 13:13:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 948 transitions. [2022-10-16 13:13:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-16 13:13:12,517 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:12,517 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] [2022-10-16 13:13:12,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 13:13:12,521 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)] === [2022-10-16 13:13:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1119035377, now seen corresponding path program 1 times [2022-10-16 13:13:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:12,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68302173] [2022-10-16 13:13:12,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 13:13:12,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68302173] [2022-10-16 13:13:12,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68302173] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:12,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:12,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:13:12,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299563432] [2022-10-16 13:13:12,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:12,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:13:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:13:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:13:12,835 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) [2022-10-16 13:13:13,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:13,252 INFO L93 Difference]: Finished difference Result 1592 states and 2152 transitions. [2022-10-16 13:13:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:13:13,253 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 [2022-10-16 13:13:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:13,263 INFO L225 Difference]: With dead ends: 1592 [2022-10-16 13:13:13,263 INFO L226 Difference]: Without dead ends: 905 [2022-10-16 13:13:13,267 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 [2022-10-16 13:13:13,271 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 155 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 836 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 [2022-10-16 13:13:13,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 836 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 13:13:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-10-16 13:13:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 727. [2022-10-16 13:13:13,334 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) [2022-10-16 13:13:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 951 transitions. [2022-10-16 13:13:13,339 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 951 transitions. Word has length 95 [2022-10-16 13:13:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 951 transitions. [2022-10-16 13:13:13,341 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) [2022-10-16 13:13:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 951 transitions. [2022-10-16 13:13:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 13:13:13,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:13,343 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] [2022-10-16 13:13:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 13:13:13,344 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)] === [2022-10-16 13:13:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash -330432361, now seen corresponding path program 1 times [2022-10-16 13:13:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716530055] [2022-10-16 13:13:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 13:13:13,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:13,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716530055] [2022-10-16 13:13:13,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716530055] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:13,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:13,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:13:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618651686] [2022-10-16 13:13:13,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:13,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:13:13,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:13:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:13:13,814 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) [2022-10-16 13:13:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:14,618 INFO L93 Difference]: Finished difference Result 2324 states and 3110 transitions. [2022-10-16 13:13:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:13:14,619 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 [2022-10-16 13:13:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:14,633 INFO L225 Difference]: With dead ends: 2324 [2022-10-16 13:13:14,633 INFO L226 Difference]: Without dead ends: 1634 [2022-10-16 13:13:14,637 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 [2022-10-16 13:13:14,639 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 504 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:14,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1016 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 13:13:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-10-16 13:13:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1395. [2022-10-16 13:13:14,773 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) [2022-10-16 13:13:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1840 transitions. [2022-10-16 13:13:14,783 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1840 transitions. Word has length 96 [2022-10-16 13:13:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:14,784 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1840 transitions. [2022-10-16 13:13:14,784 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) [2022-10-16 13:13:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1840 transitions. [2022-10-16 13:13:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-16 13:13:14,787 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:14,788 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] [2022-10-16 13:13:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 13:13:14,788 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)] === [2022-10-16 13:13:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1181924454, now seen corresponding path program 1 times [2022-10-16 13:13:14,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:14,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951812721] [2022-10-16 13:13:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 13:13:15,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:15,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951812721] [2022-10-16 13:13:15,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951812721] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:15,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:15,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:13:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282421196] [2022-10-16 13:13:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:15,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:13:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:13:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:13:15,006 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) [2022-10-16 13:13:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:15,761 INFO L93 Difference]: Finished difference Result 2530 states and 3307 transitions. [2022-10-16 13:13:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:13:15,762 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 [2022-10-16 13:13:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:15,775 INFO L225 Difference]: With dead ends: 2530 [2022-10-16 13:13:15,775 INFO L226 Difference]: Without dead ends: 1614 [2022-10-16 13:13:15,779 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 [2022-10-16 13:13:15,781 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 [2022-10-16 13:13:15,781 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] [2022-10-16 13:13:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-10-16 13:13:15,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1361. [2022-10-16 13:13:15,940 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) [2022-10-16 13:13:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1774 transitions. [2022-10-16 13:13:15,952 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1774 transitions. Word has length 93 [2022-10-16 13:13:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:15,953 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1774 transitions. [2022-10-16 13:13:15,953 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) [2022-10-16 13:13:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1774 transitions. [2022-10-16 13:13:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-16 13:13:15,956 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:15,957 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] [2022-10-16 13:13:15,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 13:13:15,957 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)] === [2022-10-16 13:13:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash -972826617, now seen corresponding path program 1 times [2022-10-16 13:13:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:15,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282642471] [2022-10-16 13:13:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 13:13:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:16,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:16,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282642471] [2022-10-16 13:13:16,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282642471] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:16,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:16,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:13:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311980299] [2022-10-16 13:13:16,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:16,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:13:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:13:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:13:16,447 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) [2022-10-16 13:13:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:17,235 INFO L93 Difference]: Finished difference Result 2907 states and 3807 transitions. [2022-10-16 13:13:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:13:17,238 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 [2022-10-16 13:13:17,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:17,250 INFO L225 Difference]: With dead ends: 2907 [2022-10-16 13:13:17,250 INFO L226 Difference]: Without dead ends: 1583 [2022-10-16 13:13:17,256 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 [2022-10-16 13:13:17,257 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 714 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 882 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 [2022-10-16 13:13:17,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 882 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 13:13:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-10-16 13:13:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1346. [2022-10-16 13:13:17,373 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) [2022-10-16 13:13:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1747 transitions. [2022-10-16 13:13:17,384 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1747 transitions. Word has length 114 [2022-10-16 13:13:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:17,385 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 1747 transitions. [2022-10-16 13:13:17,385 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) [2022-10-16 13:13:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1747 transitions. [2022-10-16 13:13:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 13:13:17,388 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:17,388 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] [2022-10-16 13:13:17,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 13:13:17,389 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)] === [2022-10-16 13:13:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1944649240, now seen corresponding path program 1 times [2022-10-16 13:13:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:17,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775597516] [2022-10-16 13:13:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 13:13:17,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775597516] [2022-10-16 13:13:17,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775597516] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:13:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006886615] [2022-10-16 13:13:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:13:17,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:13:17,718 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) [2022-10-16 13:13:17,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 13:13:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:17,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:13:18,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:13:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 13:13:18,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:13:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 13:13:18,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006886615] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:13:18,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:13:18,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-10-16 13:13:18,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965008950] [2022-10-16 13:13:18,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:13:18,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 13:13:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:18,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 13:13:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:13:18,490 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) [2022-10-16 13:13:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:20,786 INFO L93 Difference]: Finished difference Result 4682 states and 6036 transitions. [2022-10-16 13:13:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 13:13:20,787 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 [2022-10-16 13:13:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:20,816 INFO L225 Difference]: With dead ends: 4682 [2022-10-16 13:13:20,817 INFO L226 Difference]: Without dead ends: 4681 [2022-10-16 13:13:20,819 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 [2022-10-16 13:13:20,822 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 2264 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:20,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 1807 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-16 13:13:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2022-10-16 13:13:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3912. [2022-10-16 13:13:21,139 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) [2022-10-16 13:13:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5121 transitions. [2022-10-16 13:13:21,168 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5121 transitions. Word has length 103 [2022-10-16 13:13:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 3912 states and 5121 transitions. [2022-10-16 13:13:21,169 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) [2022-10-16 13:13:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5121 transitions. [2022-10-16 13:13:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-16 13:13:21,172 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:21,172 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] [2022-10-16 13:13:21,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 13:13:21,387 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 [2022-10-16 13:13:21,388 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)] === [2022-10-16 13:13:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash 154584823, now seen corresponding path program 1 times [2022-10-16 13:13:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:21,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864111245] [2022-10-16 13:13:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 13:13:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864111245] [2022-10-16 13:13:21,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864111245] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:13:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142632888] [2022-10-16 13:13:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:13:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:13:21,698 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) [2022-10-16 13:13:21,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 13:13:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:21,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:13:21,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:13:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 13:13:22,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:13:22,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142632888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:22,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:13:22,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-16 13:13:22,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016912326] [2022-10-16 13:13:22,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:22,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:13:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:22,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:13:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:13:22,130 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) [2022-10-16 13:13:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:22,534 INFO L93 Difference]: Finished difference Result 3926 states and 5121 transitions. [2022-10-16 13:13:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:13:22,535 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 [2022-10-16 13:13:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:22,560 INFO L225 Difference]: With dead ends: 3926 [2022-10-16 13:13:22,561 INFO L226 Difference]: Without dead ends: 3925 [2022-10-16 13:13:22,564 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 [2022-10-16 13:13:22,565 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 [2022-10-16 13:13:22,565 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] [2022-10-16 13:13:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-10-16 13:13:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3911. [2022-10-16 13:13:22,965 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) [2022-10-16 13:13:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5115 transitions. [2022-10-16 13:13:22,981 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5115 transitions. Word has length 104 [2022-10-16 13:13:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:22,981 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 5115 transitions. [2022-10-16 13:13:22,982 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) [2022-10-16 13:13:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5115 transitions. [2022-10-16 13:13:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-16 13:13:22,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:22,986 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] [2022-10-16 13:13:23,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 13:13:23,201 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 [2022-10-16 13:13:23,201 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)] === [2022-10-16 13:13:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2104096904, now seen corresponding path program 1 times [2022-10-16 13:13:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006813123] [2022-10-16 13:13:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:13:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:23,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006813123] [2022-10-16 13:13:23,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006813123] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:23,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:23,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:13:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523261969] [2022-10-16 13:13:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:13:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:13:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:13:23,499 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) [2022-10-16 13:13:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:24,442 INFO L93 Difference]: Finished difference Result 4909 states and 6483 transitions. [2022-10-16 13:13:24,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:13:24,443 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 [2022-10-16 13:13:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:24,474 INFO L225 Difference]: With dead ends: 4909 [2022-10-16 13:13:24,478 INFO L226 Difference]: Without dead ends: 4907 [2022-10-16 13:13:24,482 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 [2022-10-16 13:13:24,483 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, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:24,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 805 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:13:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2022-10-16 13:13:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 3965. [2022-10-16 13:13:24,850 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) [2022-10-16 13:13:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 5187 transitions. [2022-10-16 13:13:24,866 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 5187 transitions. Word has length 132 [2022-10-16 13:13:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:24,867 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 5187 transitions. [2022-10-16 13:13:24,867 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) [2022-10-16 13:13:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 5187 transitions. [2022-10-16 13:13:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-16 13:13:24,871 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:24,871 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] [2022-10-16 13:13:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 13:13:24,872 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)] === [2022-10-16 13:13:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash -887209947, now seen corresponding path program 1 times [2022-10-16 13:13:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142909945] [2022-10-16 13:13:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 13:13:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:25,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:25,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142909945] [2022-10-16 13:13:25,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142909945] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:25,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:25,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:13:25,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243972248] [2022-10-16 13:13:25,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:25,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:13:25,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:13:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:13:25,194 INFO L87 Difference]: Start difference. First operand 3965 states and 5187 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-10-16 13:13:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:26,247 INFO L93 Difference]: Finished difference Result 7224 states and 9797 transitions. [2022-10-16 13:13:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 13:13:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 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 134 [2022-10-16 13:13:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:26,284 INFO L225 Difference]: With dead ends: 7224 [2022-10-16 13:13:26,285 INFO L226 Difference]: Without dead ends: 5077 [2022-10-16 13:13:26,297 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 [2022-10-16 13:13:26,298 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 [2022-10-16 13:13:26,298 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] [2022-10-16 13:13:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-10-16 13:13:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3992. [2022-10-16 13:13:26,736 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) [2022-10-16 13:13:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5214 transitions. [2022-10-16 13:13:26,755 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5214 transitions. Word has length 134 [2022-10-16 13:13:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:26,756 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 5214 transitions. [2022-10-16 13:13:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-10-16 13:13:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5214 transitions. [2022-10-16 13:13:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-16 13:13:26,760 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:26,760 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] [2022-10-16 13:13:26,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 13:13:26,761 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)] === [2022-10-16 13:13:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1800993357, now seen corresponding path program 1 times [2022-10-16 13:13:26,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:26,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931281874] [2022-10-16 13:13:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:26,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 13:13:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:27,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931281874] [2022-10-16 13:13:27,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931281874] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:27,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:27,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:13:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24206782] [2022-10-16 13:13:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:27,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:13:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:13:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:13:27,131 INFO L87 Difference]: Start difference. First operand 3992 states and 5214 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) [2022-10-16 13:13:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:28,133 INFO L93 Difference]: Finished difference Result 5207 states and 6942 transitions. [2022-10-16 13:13:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 13:13:28,133 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 [2022-10-16 13:13:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:28,161 INFO L225 Difference]: With dead ends: 5207 [2022-10-16 13:13:28,162 INFO L226 Difference]: Without dead ends: 5204 [2022-10-16 13:13:28,165 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 [2022-10-16 13:13:28,166 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 415 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-10-16 13:13:28,166 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] [2022-10-16 13:13:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2022-10-16 13:13:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 4082. [2022-10-16 13:13:28,488 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) [2022-10-16 13:13:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 5340 transitions. [2022-10-16 13:13:28,506 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 5340 transitions. Word has length 138 [2022-10-16 13:13:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:28,507 INFO L495 AbstractCegarLoop]: Abstraction has 4082 states and 5340 transitions. [2022-10-16 13:13:28,507 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) [2022-10-16 13:13:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 5340 transitions. [2022-10-16 13:13:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-10-16 13:13:28,511 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:28,511 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] [2022-10-16 13:13:28,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 13:13:28,512 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)] === [2022-10-16 13:13:28,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 551715622, now seen corresponding path program 1 times [2022-10-16 13:13:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:28,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268767836] [2022-10-16 13:13:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:28,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:13:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:29,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:29,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268767836] [2022-10-16 13:13:29,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268767836] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:29,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:29,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 13:13:29,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772276317] [2022-10-16 13:13:29,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:29,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 13:13:29,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:29,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 13:13:29,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:13:29,231 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) [2022-10-16 13:13:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:33,208 INFO L93 Difference]: Finished difference Result 13538 states and 18540 transitions. [2022-10-16 13:13:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 13:13:33,209 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 [2022-10-16 13:13:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:33,274 INFO L225 Difference]: With dead ends: 13538 [2022-10-16 13:13:33,274 INFO L226 Difference]: Without dead ends: 11274 [2022-10-16 13:13:33,289 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 [2022-10-16 13:13:33,291 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2157 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:33,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 1646 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-10-16 13:13:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2022-10-16 13:13:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 9030. [2022-10-16 13:13:34,098 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) [2022-10-16 13:13:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9030 states to 9030 states and 12238 transitions. [2022-10-16 13:13:34,136 INFO L78 Accepts]: Start accepts. Automaton has 9030 states and 12238 transitions. Word has length 137 [2022-10-16 13:13:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:34,137 INFO L495 AbstractCegarLoop]: Abstraction has 9030 states and 12238 transitions. [2022-10-16 13:13:34,138 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) [2022-10-16 13:13:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 9030 states and 12238 transitions. [2022-10-16 13:13:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-16 13:13:34,142 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:34,142 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] [2022-10-16 13:13:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-16 13:13:34,143 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)] === [2022-10-16 13:13:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -76686807, now seen corresponding path program 1 times [2022-10-16 13:13:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:34,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241523933] [2022-10-16 13:13:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:13:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:34,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:34,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241523933] [2022-10-16 13:13:34,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241523933] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:34,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:34,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:13:34,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562297675] [2022-10-16 13:13:34,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:34,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:13:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:13:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:13:34,448 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) [2022-10-16 13:13:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:35,889 INFO L93 Difference]: Finished difference Result 11067 states and 15127 transitions. [2022-10-16 13:13:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 13:13:35,890 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 [2022-10-16 13:13:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:35,934 INFO L225 Difference]: With dead ends: 11067 [2022-10-16 13:13:35,934 INFO L226 Difference]: Without dead ends: 11064 [2022-10-16 13:13:35,940 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 [2022-10-16 13:13:35,941 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 234 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-10-16 13:13:35,941 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] [2022-10-16 13:13:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11064 states. [2022-10-16 13:13:36,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11064 to 9137. [2022-10-16 13:13:36,721 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) [2022-10-16 13:13:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9137 states to 9137 states and 12355 transitions. [2022-10-16 13:13:36,762 INFO L78 Accepts]: Start accepts. Automaton has 9137 states and 12355 transitions. Word has length 138 [2022-10-16 13:13:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:36,762 INFO L495 AbstractCegarLoop]: Abstraction has 9137 states and 12355 transitions. [2022-10-16 13:13:36,763 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) [2022-10-16 13:13:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9137 states and 12355 transitions. [2022-10-16 13:13:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-16 13:13:36,767 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:36,767 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] [2022-10-16 13:13:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 13:13:36,768 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)] === [2022-10-16 13:13:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash -76684533, now seen corresponding path program 1 times [2022-10-16 13:13:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:36,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412334855] [2022-10-16 13:13:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:13:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:37,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:37,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:37,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412334855] [2022-10-16 13:13:37,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412334855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:37,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:37,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:13:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332343167] [2022-10-16 13:13:37,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:37,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:13:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:13:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:13:37,072 INFO L87 Difference]: Start difference. First operand 9137 states and 12355 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) [2022-10-16 13:13:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:39,688 INFO L93 Difference]: Finished difference Result 24990 states and 35911 transitions. [2022-10-16 13:13:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 13:13:39,688 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 [2022-10-16 13:13:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:39,782 INFO L225 Difference]: With dead ends: 24990 [2022-10-16 13:13:39,782 INFO L226 Difference]: Without dead ends: 17671 [2022-10-16 13:13:39,823 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 [2022-10-16 13:13:39,824 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 [2022-10-16 13:13:39,824 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] [2022-10-16 13:13:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2022-10-16 13:13:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 15325. [2022-10-16 13:13:41,131 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) [2022-10-16 13:13:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 21613 transitions. [2022-10-16 13:13:41,207 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 21613 transitions. Word has length 138 [2022-10-16 13:13:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:41,208 INFO L495 AbstractCegarLoop]: Abstraction has 15325 states and 21613 transitions. [2022-10-16 13:13:41,208 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) [2022-10-16 13:13:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 21613 transitions. [2022-10-16 13:13:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-16 13:13:41,213 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:41,213 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] [2022-10-16 13:13:41,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-16 13:13:41,213 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)] === [2022-10-16 13:13:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2039774503, now seen corresponding path program 1 times [2022-10-16 13:13:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:41,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658672604] [2022-10-16 13:13:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:41,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:13:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658672604] [2022-10-16 13:13:41,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658672604] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:13:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849103490] [2022-10-16 13:13:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:41,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:13:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:13:41,484 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) [2022-10-16 13:13:41,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 13:13:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:41,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 13:13:41,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:13:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-16 13:13:41,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:13:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:42,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849103490] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 13:13:42,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 13:13:42,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 18 [2022-10-16 13:13:42,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913925602] [2022-10-16 13:13:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:42,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:13:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:13:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-10-16 13:13:42,564 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) [2022-10-16 13:13:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:45,723 INFO L93 Difference]: Finished difference Result 35756 states and 51952 transitions. [2022-10-16 13:13:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 13:13:45,726 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 [2022-10-16 13:13:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:45,824 INFO L225 Difference]: With dead ends: 35756 [2022-10-16 13:13:45,825 INFO L226 Difference]: Without dead ends: 22249 [2022-10-16 13:13:45,886 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 [2022-10-16 13:13:45,887 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1122 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1125 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 13:13:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22249 states. [2022-10-16 13:13:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22249 to 21649. [2022-10-16 13:13:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21649 states, 17291 states have (on average 1.2612920016193396) internal successors, (21809), 17393 states have internal predecessors, (21809), 2578 states have call successors, (2578), 1353 states have call predecessors, (2578), 1767 states have return successors, (5701), 3001 states have call predecessors, (5701), 2578 states have call successors, (5701) [2022-10-16 13:13:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21649 states to 21649 states and 30088 transitions. [2022-10-16 13:13:47,939 INFO L78 Accepts]: Start accepts. Automaton has 21649 states and 30088 transitions. Word has length 139 [2022-10-16 13:13:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:47,940 INFO L495 AbstractCegarLoop]: Abstraction has 21649 states and 30088 transitions. [2022-10-16 13:13:47,940 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-10-16 13:13:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 21649 states and 30088 transitions. [2022-10-16 13:13:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-16 13:13:48,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:48,066 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:13:48,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 13:13:48,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:13:48,267 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_set_removeErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:13:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2073819510, now seen corresponding path program 1 times [2022-10-16 13:13:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:48,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891085045] [2022-10-16 13:13:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:48,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:13:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891085045] [2022-10-16 13:13:48,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891085045] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:13:48,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:13:48,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:13:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290164243] [2022-10-16 13:13:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:48,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:13:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:13:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:13:48,644 INFO L87 Difference]: Start difference. First operand 21649 states and 30088 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-10-16 13:13:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:51,128 INFO L93 Difference]: Finished difference Result 25415 states and 36136 transitions. [2022-10-16 13:13:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:13:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 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 143 [2022-10-16 13:13:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:51,278 INFO L225 Difference]: With dead ends: 25415 [2022-10-16 13:13:51,278 INFO L226 Difference]: Without dead ends: 25414 [2022-10-16 13:13:51,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:13:51,298 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 330 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:51,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1018 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:13:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25414 states. [2022-10-16 13:13:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25414 to 21703. [2022-10-16 13:13:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21703 states, 17345 states have (on average 1.2599596425482849) internal successors, (21854), 17447 states have internal predecessors, (21854), 2578 states have call successors, (2578), 1353 states have call predecessors, (2578), 1767 states have return successors, (5701), 3001 states have call predecessors, (5701), 2578 states have call successors, (5701) [2022-10-16 13:13:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21703 states to 21703 states and 30133 transitions. [2022-10-16 13:13:53,321 INFO L78 Accepts]: Start accepts. Automaton has 21703 states and 30133 transitions. Word has length 143 [2022-10-16 13:13:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:53,321 INFO L495 AbstractCegarLoop]: Abstraction has 21703 states and 30133 transitions. [2022-10-16 13:13:53,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 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) [2022-10-16 13:13:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 21703 states and 30133 transitions. [2022-10-16 13:13:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-16 13:13:53,326 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:53,326 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:13:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 13:13:53,327 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_set_removeErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:13:53,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:53,327 INFO L85 PathProgramCache]: Analyzing trace with hash 635104654, now seen corresponding path program 1 times [2022-10-16 13:13:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:53,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633601764] [2022-10-16 13:13:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:13:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:13:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:13:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-16 13:13:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:13:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-16 13:13:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:13:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:13:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-10-16 13:13:53,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:13:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633601764] [2022-10-16 13:13:53,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633601764] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:13:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810329783] [2022-10-16 13:13:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:53,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:13:53,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:13:53,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:13:53,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 13:13:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:13:53,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 13:13:53,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:13:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 38 proven. 36 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-16 13:13:54,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:13:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-10-16 13:13:54,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810329783] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 13:13:54,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 13:13:54,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 9] total 21 [2022-10-16 13:13:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137181786] [2022-10-16 13:13:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:13:54,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 13:13:54,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:13:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 13:13:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-10-16 13:13:54,444 INFO L87 Difference]: Start difference. First operand 21703 states and 30133 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2022-10-16 13:13:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:13:56,887 INFO L93 Difference]: Finished difference Result 41736 states and 58447 transitions. [2022-10-16 13:13:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 13:13:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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 146 [2022-10-16 13:13:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:13:56,986 INFO L225 Difference]: With dead ends: 41736 [2022-10-16 13:13:56,986 INFO L226 Difference]: Without dead ends: 21851 [2022-10-16 13:13:57,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 304 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-10-16 13:13:57,068 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1211 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:13:57,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1188 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 13:13:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21851 states. [2022-10-16 13:13:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21851 to 21559. [2022-10-16 13:13:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21559 states, 17219 states have (on average 1.2602938614321388) internal successors, (21701), 17321 states have internal predecessors, (21701), 2578 states have call successors, (2578), 1353 states have call predecessors, (2578), 1749 states have return successors, (5557), 2983 states have call predecessors, (5557), 2578 states have call successors, (5557) [2022-10-16 13:13:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21559 states to 21559 states and 29836 transitions. [2022-10-16 13:13:59,192 INFO L78 Accepts]: Start accepts. Automaton has 21559 states and 29836 transitions. Word has length 146 [2022-10-16 13:13:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:13:59,193 INFO L495 AbstractCegarLoop]: Abstraction has 21559 states and 29836 transitions. [2022-10-16 13:13:59,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 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) [2022-10-16 13:13:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21559 states and 29836 transitions. [2022-10-16 13:13:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-16 13:13:59,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:13:59,207 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:13:59,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 13:13:59,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:13:59,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_skb_allocErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:13:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:13:59,421 INFO L85 PathProgramCache]: Analyzing trace with hash 868247218, now seen corresponding path program 1 times [2022-10-16 13:13:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:13:59,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506647950] [2022-10-16 13:13:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:13:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:13:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:14:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:14:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:14:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:14:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:14:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 13:14:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:14:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-16 13:14:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-16 13:14:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-10-16 13:14:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-10-16 13:14:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:14:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506647950] [2022-10-16 13:14:00,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506647950] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329999291] [2022-10-16 13:14:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:00,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:14:00,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:14:00,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 13:14:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:00,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 13:14:00,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:14:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 166 proven. 44 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-10-16 13:14:01,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:14:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-10-16 13:14:02,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329999291] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:02,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 13:14:02,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 8] total 22 [2022-10-16 13:14:02,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996889509] [2022-10-16 13:14:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:14:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 13:14:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:14:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 13:14:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-10-16 13:14:02,034 INFO L87 Difference]: Start difference. First operand 21559 states and 29836 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-10-16 13:14:05,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:14:05,375 INFO L93 Difference]: Finished difference Result 51072 states and 71127 transitions. [2022-10-16 13:14:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 13:14:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 190 [2022-10-16 13:14:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:14:05,526 INFO L225 Difference]: With dead ends: 51072 [2022-10-16 13:14:05,527 INFO L226 Difference]: Without dead ends: 31196 [2022-10-16 13:14:05,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2022-10-16 13:14:05,595 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1302 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:14:05,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1230 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 13:14:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31196 states. [2022-10-16 13:14:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31196 to 28900. [2022-10-16 13:14:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28900 states, 23009 states have (on average 1.2552914077100266) internal successors, (28883), 23102 states have internal predecessors, (28883), 3445 states have call successors, (3445), 1767 states have call predecessors, (3445), 2433 states have return successors, (7882), 4147 states have call predecessors, (7882), 3445 states have call successors, (7882) [2022-10-16 13:14:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28900 states to 28900 states and 40210 transitions. [2022-10-16 13:14:08,489 INFO L78 Accepts]: Start accepts. Automaton has 28900 states and 40210 transitions. Word has length 190 [2022-10-16 13:14:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:14:08,490 INFO L495 AbstractCegarLoop]: Abstraction has 28900 states and 40210 transitions. [2022-10-16 13:14:08,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-10-16 13:14:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28900 states and 40210 transitions. [2022-10-16 13:14:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-10-16 13:14:08,503 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:14:08,503 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:14:08,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-16 13:14:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:08,717 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_skb_allocErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:14:08,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:14:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash 90058734, now seen corresponding path program 1 times [2022-10-16 13:14:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:14:08,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944458874] [2022-10-16 13:14:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:14:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:14:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:14:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:14:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:14:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:14:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 13:14:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:14:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-16 13:14:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-10-16 13:14:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-10-16 13:14:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-10-16 13:14:10,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:14:10,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944458874] [2022-10-16 13:14:10,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944458874] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:10,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719637471] [2022-10-16 13:14:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:10,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:10,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:14:10,103 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:14:10,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 13:14:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:10,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 13:14:10,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:14:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 96 proven. 62 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-16 13:14:10,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:14:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-10-16 13:14:11,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719637471] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:11,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 13:14:11,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 5] total 20 [2022-10-16 13:14:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843077945] [2022-10-16 13:14:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:14:11,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:14:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:14:11,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:14:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2022-10-16 13:14:11,449 INFO L87 Difference]: Start difference. First operand 28900 states and 40210 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-10-16 13:14:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:14:14,367 INFO L93 Difference]: Finished difference Result 28954 states and 40264 transitions. [2022-10-16 13:14:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:14:14,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 198 [2022-10-16 13:14:14,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:14:14,489 INFO L225 Difference]: With dead ends: 28954 [2022-10-16 13:14:14,490 INFO L226 Difference]: Without dead ends: 28953 [2022-10-16 13:14:14,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 431 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2022-10-16 13:14:14,510 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 716 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:14:14,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 421 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:14:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28953 states. [2022-10-16 13:14:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28953 to 28899. [2022-10-16 13:14:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28899 states, 23009 states have (on average 1.254117953844148) internal successors, (28856), 23101 states have internal predecessors, (28856), 3445 states have call successors, (3445), 1767 states have call predecessors, (3445), 2433 states have return successors, (7882), 4147 states have call predecessors, (7882), 3445 states have call successors, (7882) [2022-10-16 13:14:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28899 states to 28899 states and 40183 transitions. [2022-10-16 13:14:17,709 INFO L78 Accepts]: Start accepts. Automaton has 28899 states and 40183 transitions. Word has length 198 [2022-10-16 13:14:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:14:17,709 INFO L495 AbstractCegarLoop]: Abstraction has 28899 states and 40183 transitions. [2022-10-16 13:14:17,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-10-16 13:14:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28899 states and 40183 transitions. [2022-10-16 13:14:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-10-16 13:14:17,721 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:14:17,721 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:14:17,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 13:14:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:17,935 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:14:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:14:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash -356019889, now seen corresponding path program 1 times [2022-10-16 13:14:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:14:17,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333078671] [2022-10-16 13:14:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:14:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:14:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:14:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:14:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:14:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:14:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 13:14:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 13:14:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-10-16 13:14:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-10-16 13:14:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-10-16 13:14:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-10-16 13:14:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:14:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333078671] [2022-10-16 13:14:18,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333078671] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211809684] [2022-10-16 13:14:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:18,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:18,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:14:18,336 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:14:18,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 13:14:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:18,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:14:18,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:14:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-10-16 13:14:18,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:14:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-10-16 13:14:18,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211809684] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:14:18,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:14:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 10 [2022-10-16 13:14:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145503196] [2022-10-16 13:14:18,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:14:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 13:14:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:14:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 13:14:18,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:14:18,786 INFO L87 Difference]: Start difference. First operand 28899 states and 40183 transitions. Second operand has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 1 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:14:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:14:22,897 INFO L93 Difference]: Finished difference Result 36735 states and 52288 transitions. [2022-10-16 13:14:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 13:14:22,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 1 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 201 [2022-10-16 13:14:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:14:23,023 INFO L225 Difference]: With dead ends: 36735 [2022-10-16 13:14:23,023 INFO L226 Difference]: Without dead ends: 36734 [2022-10-16 13:14:23,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:14:23,043 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 508 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:14:23,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 918 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:14:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36734 states. [2022-10-16 13:14:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36734 to 30276. [2022-10-16 13:14:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30276 states, 24386 states have (on average 1.2663413433937505) internal successors, (30881), 24478 states have internal predecessors, (30881), 3445 states have call successors, (3445), 1767 states have call predecessors, (3445), 2433 states have return successors, (7882), 4147 states have call predecessors, (7882), 3445 states have call successors, (7882) [2022-10-16 13:14:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30276 states to 30276 states and 42208 transitions. [2022-10-16 13:14:26,674 INFO L78 Accepts]: Start accepts. Automaton has 30276 states and 42208 transitions. Word has length 201 [2022-10-16 13:14:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:14:26,674 INFO L495 AbstractCegarLoop]: Abstraction has 30276 states and 42208 transitions. [2022-10-16 13:14:26,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 1 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:14:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 30276 states and 42208 transitions. [2022-10-16 13:14:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-10-16 13:14:26,684 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:14:26,685 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:14:26,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 13:14:26,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:26,900 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:14:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:14:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2042765500, now seen corresponding path program 1 times [2022-10-16 13:14:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:14:26,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618165601] [2022-10-16 13:14:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:14:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:14:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:14:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:14:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:14:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:14:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 13:14:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:14:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-16 13:14:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-10-16 13:14:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-16 13:14:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-16 13:14:27,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:14:27,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618165601] [2022-10-16 13:14:27,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618165601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:27,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633322586] [2022-10-16 13:14:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:27,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:27,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:14:27,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:14:27,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 13:14:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:27,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:14:27,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:14:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-10-16 13:14:27,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:14:27,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633322586] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:14:27,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:14:27,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-16 13:14:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219367310] [2022-10-16 13:14:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:14:27,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:14:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:14:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:14:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:14:27,649 INFO L87 Difference]: Start difference. First operand 30276 states and 42208 transitions. Second operand has 4 states, 3 states have (on average 30.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:14:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:14:30,578 INFO L93 Difference]: Finished difference Result 30681 states and 42613 transitions. [2022-10-16 13:14:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:14:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 30.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 203 [2022-10-16 13:14:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:14:30,726 INFO L225 Difference]: With dead ends: 30681 [2022-10-16 13:14:30,726 INFO L226 Difference]: Without dead ends: 30680 [2022-10-16 13:14:30,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:14:30,735 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 17 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:14:30,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 939 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:14:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30680 states. [2022-10-16 13:14:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30680 to 30275. [2022-10-16 13:14:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30275 states, 24386 states have (on average 1.2563766095300581) internal successors, (30638), 24477 states have internal predecessors, (30638), 3445 states have call successors, (3445), 1767 states have call predecessors, (3445), 2433 states have return successors, (7882), 4147 states have call predecessors, (7882), 3445 states have call successors, (7882) [2022-10-16 13:14:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30275 states to 30275 states and 41965 transitions. [2022-10-16 13:14:33,932 INFO L78 Accepts]: Start accepts. Automaton has 30275 states and 41965 transitions. Word has length 203 [2022-10-16 13:14:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:14:33,940 INFO L495 AbstractCegarLoop]: Abstraction has 30275 states and 41965 transitions. [2022-10-16 13:14:33,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 30.0) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:14:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 30275 states and 41965 transitions. [2022-10-16 13:14:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-10-16 13:14:33,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:14:33,951 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:14:33,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 13:14:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 13:14:34,166 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:14:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:14:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash 69350081, now seen corresponding path program 2 times [2022-10-16 13:14:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:14:34,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040258289] [2022-10-16 13:14:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:14:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:14:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:14:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:14:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 13:14:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:14:34,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040258289] [2022-10-16 13:14:34,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040258289] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:34,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076590283] [2022-10-16 13:14:34,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 13:14:34,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:14:34,682 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:14:34,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 13:14:34,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 13:14:34,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:14:34,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 13:14:34,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:14:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-10-16 13:14:34,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:14:34,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076590283] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:14:34,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:14:34,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-10-16 13:14:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819723614] [2022-10-16 13:14:34,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:14:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:14:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:14:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:14:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:14:34,957 INFO L87 Difference]: Start difference. First operand 30275 states and 41965 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:14:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:14:39,996 INFO L93 Difference]: Finished difference Result 76992 states and 107414 transitions. [2022-10-16 13:14:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:14:39,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (5), 1 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 178 [2022-10-16 13:14:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:14:40,160 INFO L225 Difference]: With dead ends: 76992 [2022-10-16 13:14:40,160 INFO L226 Difference]: Without dead ends: 50140 [2022-10-16 13:14:40,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-10-16 13:14:40,239 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 392 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:14:40,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1429 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:14:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50140 states. [2022-10-16 13:14:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50140 to 30405. [2022-10-16 13:14:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30405 states, 24516 states have (on average 1.255017131669114) internal successors, (30768), 24607 states have internal predecessors, (30768), 3445 states have call successors, (3445), 1767 states have call predecessors, (3445), 2433 states have return successors, (7882), 4147 states have call predecessors, (7882), 3445 states have call successors, (7882) [2022-10-16 13:14:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30405 states to 30405 states and 42095 transitions. [2022-10-16 13:14:44,090 INFO L78 Accepts]: Start accepts. Automaton has 30405 states and 42095 transitions. Word has length 178 [2022-10-16 13:14:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:14:44,091 INFO L495 AbstractCegarLoop]: Abstraction has 30405 states and 42095 transitions. [2022-10-16 13:14:44,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:14:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 30405 states and 42095 transitions. [2022-10-16 13:14:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-10-16 13:14:44,100 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:14:44,100 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:14:44,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-16 13:14:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 13:14:44,301 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:14:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:14:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -333801473, now seen corresponding path program 1 times [2022-10-16 13:14:44,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:14:44,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317986310] [2022-10-16 13:14:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:14:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:14:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:14:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:14:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:14:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:14:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 13:14:44,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:14:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317986310] [2022-10-16 13:14:44,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317986310] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:14:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062181952] [2022-10-16 13:14:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:14:44,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:14:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:14:44,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:14:44,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 13:14:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:14:45,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 13:14:45,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:14:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 28 proven. 334 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 13:14:45,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:14:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 13:14:45,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062181952] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:14:45,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:14:45,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-10-16 13:14:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079337583] [2022-10-16 13:14:45,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:14:45,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 13:14:45,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:14:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 13:14:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2022-10-16 13:14:45,663 INFO L87 Difference]: Start difference. First operand 30405 states and 42095 transitions. Second operand has 15 states, 14 states have (on average 18.642857142857142) internal successors, (261), 13 states have internal predecessors, (261), 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) [2022-10-16 13:14:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:14:58,764 INFO L93 Difference]: Finished difference Result 82014 states and 116213 transitions. [2022-10-16 13:14:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 13:14:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 18.642857142857142) internal successors, (261), 13 states have internal predecessors, (261), 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 178 [2022-10-16 13:14:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:14:59,052 INFO L225 Difference]: With dead ends: 82014 [2022-10-16 13:14:59,052 INFO L226 Difference]: Without dead ends: 82013 [2022-10-16 13:14:59,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=780, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 13:14:59,084 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 10402 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 3278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10494 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 5880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3278 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:14:59,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10494 Valid, 2587 Invalid, 5880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3278 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-10-16 13:14:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82013 states. [2022-10-16 13:15:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82013 to 70803. [2022-10-16 13:15:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70803 states, 57102 states have (on average 1.2547021120100872) internal successors, (71646), 57301 states have internal predecessors, (71646), 8017 states have call successors, (8017), 4119 states have call predecessors, (8017), 5673 states have return successors, (18370), 9655 states have call predecessors, (18370), 8017 states have call successors, (18370) [2022-10-16 13:15:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70803 states to 70803 states and 98033 transitions. [2022-10-16 13:15:07,680 INFO L78 Accepts]: Start accepts. Automaton has 70803 states and 98033 transitions. Word has length 178 [2022-10-16 13:15:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:15:07,680 INFO L495 AbstractCegarLoop]: Abstraction has 70803 states and 98033 transitions. [2022-10-16 13:15:07,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 18.642857142857142) internal successors, (261), 13 states have internal predecessors, (261), 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) [2022-10-16 13:15:07,681 INFO L276 IsEmpty]: Start isEmpty. Operand 70803 states and 98033 transitions. [2022-10-16 13:15:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-10-16 13:15:07,691 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:15:07,691 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:15:07,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 13:15:07,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 13:15:07,898 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:15:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:15:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1695750015, now seen corresponding path program 1 times [2022-10-16 13:15:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:15:07,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871633068] [2022-10-16 13:15:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:15:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:15:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:15:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:15:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:15:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:15:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:15:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 13:15:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 13:15:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-10-16 13:15:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-10-16 13:15:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-10-16 13:15:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-10-16 13:15:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:15:08,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871633068] [2022-10-16 13:15:08,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871633068] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:15:08,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363899214] [2022-10-16 13:15:08,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:15:08,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:15:08,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:15:08,378 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:15:08,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 13:15:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:08,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 13:15:08,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:15:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 105 proven. 98 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-10-16 13:15:09,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:15:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 34 proven. 19 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-10-16 13:15:09,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363899214] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:15:09,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:15:09,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 19 [2022-10-16 13:15:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672485962] [2022-10-16 13:15:09,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:15:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 13:15:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:15:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 13:15:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-10-16 13:15:09,985 INFO L87 Difference]: Start difference. First operand 70803 states and 98033 transitions. Second operand has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 15 states have internal predecessors, (250), 9 states have call successors, (52), 11 states have call predecessors, (52), 8 states have return successors, (44), 10 states have call predecessors, (44), 8 states have call successors, (44) [2022-10-16 13:15:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:15:20,975 INFO L93 Difference]: Finished difference Result 129032 states and 180308 transitions. [2022-10-16 13:15:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 13:15:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 15 states have internal predecessors, (250), 9 states have call successors, (52), 11 states have call predecessors, (52), 8 states have return successors, (44), 10 states have call predecessors, (44), 8 states have call successors, (44) Word has length 221 [2022-10-16 13:15:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:15:21,437 INFO L225 Difference]: With dead ends: 129032 [2022-10-16 13:15:21,437 INFO L226 Difference]: Without dead ends: 67788 [2022-10-16 13:15:21,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 493 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 13:15:21,594 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1722 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 3597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:15:21,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 3160 Invalid, 3597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-16 13:15:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67788 states. [2022-10-16 13:15:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67788 to 54483. [2022-10-16 13:15:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54483 states, 44082 states have (on average 1.2521437321355655) internal successors, (55197), 44176 states have internal predecessors, (55197), 6040 states have call successors, (6040), 3237 states have call predecessors, (6040), 4350 states have return successors, (11164), 7279 states have call predecessors, (11164), 6040 states have call successors, (11164) [2022-10-16 13:15:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54483 states to 54483 states and 72401 transitions. [2022-10-16 13:15:28,737 INFO L78 Accepts]: Start accepts. Automaton has 54483 states and 72401 transitions. Word has length 221 [2022-10-16 13:15:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:15:28,737 INFO L495 AbstractCegarLoop]: Abstraction has 54483 states and 72401 transitions. [2022-10-16 13:15:28,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 15 states have internal predecessors, (250), 9 states have call successors, (52), 11 states have call predecessors, (52), 8 states have return successors, (44), 10 states have call predecessors, (44), 8 states have call successors, (44) [2022-10-16 13:15:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 54483 states and 72401 transitions. [2022-10-16 13:15:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-10-16 13:15:28,747 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:15:28,748 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:15:28,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 13:15:28,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 13:15:28,954 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 13:15:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:15:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1058399481, now seen corresponding path program 1 times [2022-10-16 13:15:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:15:28,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905377195] [2022-10-16 13:15:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:15:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:15:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:15:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 13:15:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:15:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:15:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:15:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 13:15:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:15:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-16 13:15:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-10-16 13:15:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-16 13:15:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:15:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:15:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 59 proven. 27 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-10-16 13:15:30,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:15:30,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905377195] [2022-10-16 13:15:30,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905377195] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:15:30,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850690147] [2022-10-16 13:15:30,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:15:30,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:15:30,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:15:30,246 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:15:30,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 13:15:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:15:30,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 13:15:30,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:15:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 131 proven. 113 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-10-16 13:15:31,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:15:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-10-16 13:15:31,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850690147] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:15:31,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:15:31,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 9] total 23 [2022-10-16 13:15:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514208660] [2022-10-16 13:15:31,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:15:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-16 13:15:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:15:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-16 13:15:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-10-16 13:15:31,669 INFO L87 Difference]: Start difference. First operand 54483 states and 72401 transitions. Second operand has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 19 states have internal predecessors, (254), 9 states have call successors, (49), 10 states have call predecessors, (49), 7 states have return successors, (43), 9 states have call predecessors, (43), 9 states have call successors, (43) [2022-10-16 13:15:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:15:49,039 INFO L93 Difference]: Finished difference Result 160668 states and 227225 transitions. [2022-10-16 13:15:49,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-16 13:15:49,039 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 19 states have internal predecessors, (254), 9 states have call successors, (49), 10 states have call predecessors, (49), 7 states have return successors, (43), 9 states have call predecessors, (43), 9 states have call successors, (43) Word has length 220 [2022-10-16 13:15:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:15:49,676 INFO L225 Difference]: With dead ends: 160668 [2022-10-16 13:15:49,676 INFO L226 Difference]: Without dead ends: 110899 [2022-10-16 13:15:49,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 486 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=680, Invalid=2512, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 13:15:49,828 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2820 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 1391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2844 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:15:49,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2844 Valid, 1933 Invalid, 3997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-10-16 13:15:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110899 states. [2022-10-16 13:16:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110899 to 93033. [2022-10-16 13:16:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93033 states, 74581 states have (on average 1.2503318539574422) internal successors, (93251), 75032 states have internal predecessors, (93251), 10794 states have call successors, (10794), 5778 states have call predecessors, (10794), 7647 states have return successors, (24927), 12558 states have call predecessors, (24927), 10794 states have call successors, (24927)