/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--usb--cx82310_eth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:15:01,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:15:01,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:15:01,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:15:01,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:15:01,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:15:01,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:15:01,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:15:01,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:15:01,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:15:01,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:15:01,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:15:01,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:15:01,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:15:01,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:15:02,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:15:02,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:15:02,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:15:02,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:15:02,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:15:02,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:15:02,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:15:02,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:15:02,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:15:02,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:15:02,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:15:02,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:15:02,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:15:02,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:15:02,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:15:02,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:15:02,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:15:02,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:15:02,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:15:02,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:15:02,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:15:02,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:15:02,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:15:02,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:15:02,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:15:02,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:15:02,058 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:15:02,114 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:15:02,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:15:02,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:15:02,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:15:02,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:15:02,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:15:02,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:15:02,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:15:02,122 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:15:02,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:15:02,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:15:02,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:15:02,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:15:02,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:15:02,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:15:02,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:15:02,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:15:02,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:15:02,125 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:15:02,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:15:02,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:15:02,129 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:15:02,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:15:02,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:15:02,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:15:02,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:15:02,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:02,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:15:02,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:15:02,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:15:02,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:15:02,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:15:02,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:15:02,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:15:02,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:15:02,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:15:02,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:15:02,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:15:02,615 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:15:02,617 INFO L432 ainManager$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--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-10-15 21:15:02,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c230cda/9343f7df215a4c49b57d7cbede64c109/FLAG6f16c0b3c [2022-10-15 21:15:03,775 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:15:03,776 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--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-10-15 21:15:03,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c230cda/9343f7df215a4c49b57d7cbede64c109/FLAG6f16c0b3c [2022-10-15 21:15:04,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4c230cda/9343f7df215a4c49b57d7cbede64c109 [2022-10-15 21:15:04,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:15:04,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:15:04,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:04,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:15:04,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:15:04,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5bbb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04, skipping insertion in model container [2022-10-15 21:15:04,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:15:04,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:15:05,283 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--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2022-10-15 21:15:05,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:05,731 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:15:05,953 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--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2022-10-15 21:15:06,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:06,136 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:15:06,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06 WrapperNode [2022-10-15 21:15:06,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:06,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:06,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:15:06,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:15:06,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,322 INFO L138 Inliner]: procedures = 102, calls = 315, calls flagged for inlining = 35, calls inlined = 32, statements flattened = 1011 [2022-10-15 21:15:06,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:06,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:15:06,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:15:06,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:15:06,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,411 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:15:06,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:15:06,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:15:06,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:15:06,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (1/1) ... [2022-10-15 21:15:06,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:06,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:06,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:15:06,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:15:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:15:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:15:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:15:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-10-15 21:15:06,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-10-15 21:15:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:15:06,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:15:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:15:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2022-10-15 21:15:06,573 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2022-10-15 21:15:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-10-15 21:15:06,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-10-15 21:15:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:15:06,574 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:15:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:15:06,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:15:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:15:06,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:15:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2022-10-15 21:15:06,574 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2022-10-15 21:15:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2022-10-15 21:15:06,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2022-10-15 21:15:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-15 21:15:06,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-15 21:15:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:15:06,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:15:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:15:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:15:06,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:15:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-10-15 21:15:06,576 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-10-15 21:15:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:15:06,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:15:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2022-10-15 21:15:06,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2022-10-15 21:15:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:15:06,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:15:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:15:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:15:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:15:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:15:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:15:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:15:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:15:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-15 21:15:06,578 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-15 21:15:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:15:06,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:15:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2022-10-15 21:15:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2022-10-15 21:15:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:15:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:15:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:15:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:15:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:15:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:15:07,055 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:15:07,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:15:07,329 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:15:09,673 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:15:09,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:15:09,687 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 21:15:09,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:09 BoogieIcfgContainer [2022-10-15 21:15:09,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:15:09,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:15:09,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:15:09,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:15:09,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:15:04" (1/3) ... [2022-10-15 21:15:09,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b51c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:09, skipping insertion in model container [2022-10-15 21:15:09,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:06" (2/3) ... [2022-10-15 21:15:09,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b51c96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:09, skipping insertion in model container [2022-10-15 21:15:09,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:09" (3/3) ... [2022-10-15 21:15:09,702 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-10-15 21:15:09,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:15:09,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-10-15 21:15:09,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:15:09,821 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;@27550eb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:15:09,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-10-15 21:15:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 256 states have (on average 1.45703125) internal successors, (373), 287 states have internal predecessors, (373), 55 states have call successors, (55), 20 states have call predecessors, (55), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-15 21:15:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 21:15:09,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:09,846 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:15:09,848 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 23 more)] === [2022-10-15 21:15:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1257228939, now seen corresponding path program 1 times [2022-10-15 21:15:09,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:09,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839787734] [2022-10-15 21:15:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:09,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:15:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:10,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839787734] [2022-10-15 21:15:10,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839787734] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:10,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:10,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:10,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957811744] [2022-10-15 21:15:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:10,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:10,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:10,666 INFO L87 Difference]: Start difference. First operand has 357 states, 256 states have (on average 1.45703125) internal successors, (373), 287 states have internal predecessors, (373), 55 states have call successors, (55), 20 states have call predecessors, (55), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:15:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:13,507 INFO L93 Difference]: Finished difference Result 1192 states and 1737 transitions. [2022-10-15 21:15:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 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 30 [2022-10-15 21:15:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:13,535 INFO L225 Difference]: With dead ends: 1192 [2022-10-15 21:15:13,536 INFO L226 Difference]: Without dead ends: 807 [2022-10-15 21:15:13,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:13,554 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 953 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:13,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1394 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-15 21:15:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-10-15 21:15:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 583. [2022-10-15 21:15:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 436 states have (on average 1.4128440366972477) internal successors, (616), 457 states have internal predecessors, (616), 91 states have call successors, (91), 34 states have call predecessors, (91), 34 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2022-10-15 21:15:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 798 transitions. [2022-10-15 21:15:13,722 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 798 transitions. Word has length 30 [2022-10-15 21:15:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:13,723 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 798 transitions. [2022-10-15 21:15:13,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:15:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 798 transitions. [2022-10-15 21:15:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 21:15:13,727 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:13,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:13,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:15:13,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1095120844, now seen corresponding path program 1 times [2022-10-15 21:15:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:13,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283041600] [2022-10-15 21:15:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:13,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:15:14,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283041600] [2022-10-15 21:15:14,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283041600] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:14,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:14,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:15:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856324095] [2022-10-15 21:15:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:14,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:15:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:14,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:15:14,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:14,093 INFO L87 Difference]: Start difference. First operand 583 states and 798 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:15:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:16,221 INFO L93 Difference]: Finished difference Result 1597 states and 2273 transitions. [2022-10-15 21:15:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:15:16,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2022-10-15 21:15:16,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:16,232 INFO L225 Difference]: With dead ends: 1597 [2022-10-15 21:15:16,232 INFO L226 Difference]: Without dead ends: 1028 [2022-10-15 21:15:16,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:15:16,238 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 578 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:16,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1407 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-15 21:15:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-10-15 21:15:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 677. [2022-10-15 21:15:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 520 states have (on average 1.4211538461538462) internal successors, (739), 541 states have internal predecessors, (739), 96 states have call successors, (96), 39 states have call predecessors, (96), 39 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2022-10-15 21:15:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 931 transitions. [2022-10-15 21:15:16,311 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 931 transitions. Word has length 37 [2022-10-15 21:15:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:16,311 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 931 transitions. [2022-10-15 21:15:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:15:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 931 transitions. [2022-10-15 21:15:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:15:16,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:16,315 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:15:16,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:15:16,316 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 23 more)] === [2022-10-15 21:15:16,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash 712690238, now seen corresponding path program 1 times [2022-10-15 21:15:16,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751696933] [2022-10-15 21:15:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:15:16,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:16,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751696933] [2022-10-15 21:15:16,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751696933] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:16,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:16,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:16,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791144304] [2022-10-15 21:15:16,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:16,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:16,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:16,560 INFO L87 Difference]: Start difference. First operand 677 states and 931 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:15:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:18,849 INFO L93 Difference]: Finished difference Result 1535 states and 2164 transitions. [2022-10-15 21:15:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:15:18,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-10-15 21:15:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:18,857 INFO L225 Difference]: With dead ends: 1535 [2022-10-15 21:15:18,857 INFO L226 Difference]: Without dead ends: 881 [2022-10-15 21:15:18,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:18,862 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 261 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:18,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1289 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-15 21:15:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-10-15 21:15:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 671. [2022-10-15 21:15:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 514 states have (on average 1.4221789883268483) internal successors, (731), 536 states have internal predecessors, (731), 96 states have call successors, (96), 39 states have call predecessors, (96), 39 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2022-10-15 21:15:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 923 transitions. [2022-10-15 21:15:18,919 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 923 transitions. Word has length 49 [2022-10-15 21:15:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:18,919 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 923 transitions. [2022-10-15 21:15:18,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:15:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 923 transitions. [2022-10-15 21:15:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 21:15:18,923 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:18,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-10-15 21:15:18,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:15:18,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash -381870678, now seen corresponding path program 1 times [2022-10-15 21:15:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:18,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542708960] [2022-10-15 21:15:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 21:15:19,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:19,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542708960] [2022-10-15 21:15:19,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542708960] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:19,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:19,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3022744] [2022-10-15 21:15:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:19,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:19,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:19,289 INFO L87 Difference]: Start difference. First operand 671 states and 923 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:15:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:21,985 INFO L93 Difference]: Finished difference Result 1722 states and 2469 transitions. [2022-10-15 21:15:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-10-15 21:15:21,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:22,001 INFO L225 Difference]: With dead ends: 1722 [2022-10-15 21:15:22,002 INFO L226 Difference]: Without dead ends: 1712 [2022-10-15 21:15:22,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:22,008 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 968 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:22,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1283 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-15 21:15:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2022-10-15 21:15:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1295. [2022-10-15 21:15:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1010 states have (on average 1.4079207920792078) internal successors, (1422), 1033 states have internal predecessors, (1422), 188 states have call successors, (188), 75 states have call predecessors, (188), 75 states have return successors, (188), 186 states have call predecessors, (188), 188 states have call successors, (188) [2022-10-15 21:15:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1798 transitions. [2022-10-15 21:15:22,134 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1798 transitions. Word has length 68 [2022-10-15 21:15:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:22,135 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1798 transitions. [2022-10-15 21:15:22,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:15:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1798 transitions. [2022-10-15 21:15:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-15 21:15:22,140 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:22,140 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-10-15 21:15:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:15:22,141 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2071637374, now seen corresponding path program 1 times [2022-10-15 21:15:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:22,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824231193] [2022-10-15 21:15:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 21:15:22,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:22,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824231193] [2022-10-15 21:15:22,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824231193] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:22,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:22,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:22,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693279841] [2022-10-15 21:15:22,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:22,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:22,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:22,436 INFO L87 Difference]: Start difference. First operand 1295 states and 1798 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 21:15:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:26,100 INFO L93 Difference]: Finished difference Result 3774 states and 5391 transitions. [2022-10-15 21:15:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:26,101 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), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-10-15 21:15:26,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:26,125 INFO L225 Difference]: With dead ends: 3774 [2022-10-15 21:15:26,125 INFO L226 Difference]: Without dead ends: 2504 [2022-10-15 21:15:26,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:26,134 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 685 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:26,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 2007 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-15 21:15:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2022-10-15 21:15:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1887. [2022-10-15 21:15:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1484 states have (on average 1.4056603773584906) internal successors, (2086), 1507 states have internal predecessors, (2086), 270 states have call successors, (270), 111 states have call predecessors, (270), 111 states have return successors, (270), 268 states have call predecessors, (270), 270 states have call successors, (270) [2022-10-15 21:15:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2626 transitions. [2022-10-15 21:15:26,291 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2626 transitions. Word has length 77 [2022-10-15 21:15:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:26,292 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 2626 transitions. [2022-10-15 21:15:26,293 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), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 21:15:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2626 transitions. [2022-10-15 21:15:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-15 21:15:26,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:26,297 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-10-15 21:15:26,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:15:26,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1492822151, now seen corresponding path program 1 times [2022-10-15 21:15:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475552045] [2022-10-15 21:15:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-15 21:15:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-15 21:15:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-15 21:15:26,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:26,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475552045] [2022-10-15 21:15:26,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475552045] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:26,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:26,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570690921] [2022-10-15 21:15:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:26,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:26,798 INFO L87 Difference]: Start difference. First operand 1887 states and 2626 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-15 21:15:28,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:15:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:30,432 INFO L93 Difference]: Finished difference Result 3980 states and 5658 transitions. [2022-10-15 21:15:30,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:30,433 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 80 [2022-10-15 21:15:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:30,453 INFO L225 Difference]: With dead ends: 3980 [2022-10-15 21:15:30,454 INFO L226 Difference]: Without dead ends: 2118 [2022-10-15 21:15:30,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:30,464 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 843 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:30,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1696 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-15 21:15:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-10-15 21:15:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1598. [2022-10-15 21:15:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1260 states have (on average 1.4047619047619047) internal successors, (1770), 1283 states have internal predecessors, (1770), 225 states have call successors, (225), 91 states have call predecessors, (225), 91 states have return successors, (225), 223 states have call predecessors, (225), 225 states have call successors, (225) [2022-10-15 21:15:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2220 transitions. [2022-10-15 21:15:30,583 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2220 transitions. Word has length 80 [2022-10-15 21:15:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:30,584 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2220 transitions. [2022-10-15 21:15:30,584 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), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-15 21:15:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2220 transitions. [2022-10-15 21:15:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-15 21:15:30,586 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:30,587 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-10-15 21:15:30,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:15:30,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:30,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1726302016, now seen corresponding path program 1 times [2022-10-15 21:15:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:30,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359263036] [2022-10-15 21:15:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-15 21:15:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-15 21:15:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359263036] [2022-10-15 21:15:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359263036] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:31,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:31,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:15:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444913157] [2022-10-15 21:15:31,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:15:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:15:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:31,307 INFO L87 Difference]: Start difference. First operand 1598 states and 2220 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:15:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:33,895 INFO L93 Difference]: Finished difference Result 3619 states and 5179 transitions. [2022-10-15 21:15:33,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:15:33,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2022-10-15 21:15:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:33,915 INFO L225 Difference]: With dead ends: 3619 [2022-10-15 21:15:33,916 INFO L226 Difference]: Without dead ends: 2061 [2022-10-15 21:15:33,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:15:33,931 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 236 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:33,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 2010 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-15 21:15:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2022-10-15 21:15:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1618. [2022-10-15 21:15:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1275 states have (on average 1.4) internal successors, (1785), 1298 states have internal predecessors, (1785), 225 states have call successors, (225), 91 states have call predecessors, (225), 96 states have return successors, (238), 228 states have call predecessors, (238), 225 states have call successors, (238) [2022-10-15 21:15:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2248 transitions. [2022-10-15 21:15:34,132 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2248 transitions. Word has length 85 [2022-10-15 21:15:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:34,134 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 2248 transitions. [2022-10-15 21:15:34,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:15:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2248 transitions. [2022-10-15 21:15:34,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-10-15 21:15:34,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:34,143 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-10-15 21:15:34,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:15:34,144 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash -301737407, now seen corresponding path program 1 times [2022-10-15 21:15:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:34,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523586350] [2022-10-15 21:15:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 21:15:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523586350] [2022-10-15 21:15:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523586350] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:15:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490292628] [2022-10-15 21:15:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:34,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:15:34,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:15:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:15:34,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:15:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 21:15:35,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:15:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 21:15:35,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490292628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:15:35,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:15:35,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-10-15 21:15:35,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980874532] [2022-10-15 21:15:35,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:15:35,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 21:15:35,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 21:15:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:15:35,263 INFO L87 Difference]: Start difference. First operand 1618 states and 2248 transitions. Second operand has 9 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 6 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-10-15 21:15:38,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:15:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:42,328 INFO L93 Difference]: Finished difference Result 6805 states and 9856 transitions. [2022-10-15 21:15:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 21:15:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 6 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 82 [2022-10-15 21:15:42,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:42,385 INFO L225 Difference]: With dead ends: 6805 [2022-10-15 21:15:42,385 INFO L226 Difference]: Without dead ends: 6800 [2022-10-15 21:15:42,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=217, Unknown=0, NotChecked=0, Total=342 [2022-10-15 21:15:42,392 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 3671 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3852 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:42,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3852 Valid, 2823 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1143 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-15 21:15:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2022-10-15 21:15:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 4017. [2022-10-15 21:15:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 3189 states have (on average 1.3994982753214174) internal successors, (4463), 3215 states have internal predecessors, (4463), 569 states have call successors, (569), 227 states have call predecessors, (569), 240 states have return successors, (598), 574 states have call predecessors, (598), 569 states have call successors, (598) [2022-10-15 21:15:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 5630 transitions. [2022-10-15 21:15:42,768 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 5630 transitions. Word has length 82 [2022-10-15 21:15:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:42,768 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 5630 transitions. [2022-10-15 21:15:42,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 6 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-10-15 21:15:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 5630 transitions. [2022-10-15 21:15:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 21:15:42,772 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:42,772 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-10-15 21:15:42,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 21:15:42,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:42,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:42,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash -763924675, now seen corresponding path program 1 times [2022-10-15 21:15:42,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:42,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512064608] [2022-10-15 21:15:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:42,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-15 21:15:43,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:43,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512064608] [2022-10-15 21:15:43,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512064608] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:15:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144535627] [2022-10-15 21:15:43,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:43,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:43,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:43,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:15:43,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:15:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:43,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:15:43,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:15:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-15 21:15:43,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:15:43,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144535627] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:43,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:15:43,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-15 21:15:43,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264972923] [2022-10-15 21:15:43,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:43,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:15:43,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:43,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:15:43,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:43,804 INFO L87 Difference]: Start difference. First operand 4017 states and 5630 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-15 21:15:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:44,922 INFO L93 Difference]: Finished difference Result 8944 states and 12538 transitions. [2022-10-15 21:15:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:15:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2022-10-15 21:15:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:44,984 INFO L225 Difference]: With dead ends: 8944 [2022-10-15 21:15:44,984 INFO L226 Difference]: Without dead ends: 8939 [2022-10-15 21:15:44,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:44,991 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 799 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:44,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1659 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 21:15:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8939 states. [2022-10-15 21:15:45,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8939 to 8558. [2022-10-15 21:15:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 6804 states have (on average 1.396090534979424) internal successors, (9499), 6833 states have internal predecessors, (9499), 1218 states have call successors, (1218), 489 states have call predecessors, (1218), 517 states have return successors, (1274), 1235 states have call predecessors, (1274), 1218 states have call successors, (1274) [2022-10-15 21:15:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 11991 transitions. [2022-10-15 21:15:45,714 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 11991 transitions. Word has length 83 [2022-10-15 21:15:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:45,715 INFO L495 AbstractCegarLoop]: Abstraction has 8558 states and 11991 transitions. [2022-10-15 21:15:45,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-15 21:15:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 11991 transitions. [2022-10-15 21:15:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-15 21:15:45,718 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:45,718 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 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] [2022-10-15 21:15:45,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:15:45,931 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,SelfDestructingSolverStorable8 [2022-10-15 21:15:45,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1548387049, now seen corresponding path program 1 times [2022-10-15 21:15:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074086611] [2022-10-15 21:15:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-15 21:15:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:15:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-10-15 21:15:46,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:46,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074086611] [2022-10-15 21:15:46,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074086611] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:46,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:46,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:46,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810102291] [2022-10-15 21:15:46,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:46,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:46,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:46,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:46,469 INFO L87 Difference]: Start difference. First operand 8558 states and 11991 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-15 21:15:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:49,908 INFO L93 Difference]: Finished difference Result 30367 states and 44184 transitions. [2022-10-15 21:15:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:49,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2022-10-15 21:15:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:50,043 INFO L225 Difference]: With dead ends: 30367 [2022-10-15 21:15:50,043 INFO L226 Difference]: Without dead ends: 21834 [2022-10-15 21:15:50,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:50,097 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 894 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:50,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1387 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-15 21:15:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21834 states. [2022-10-15 21:15:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21834 to 18080. [2022-10-15 21:15:51,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18080 states, 14458 states have (on average 1.3920320929589154) internal successors, (20126), 14526 states have internal predecessors, (20126), 2488 states have call successors, (2488), 975 states have call predecessors, (2488), 1115 states have return successors, (2908), 2578 states have call predecessors, (2908), 2488 states have call successors, (2908) [2022-10-15 21:15:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18080 states to 18080 states and 25522 transitions. [2022-10-15 21:15:51,780 INFO L78 Accepts]: Start accepts. Automaton has 18080 states and 25522 transitions. Word has length 92 [2022-10-15 21:15:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:51,781 INFO L495 AbstractCegarLoop]: Abstraction has 18080 states and 25522 transitions. [2022-10-15 21:15:51,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-15 21:15:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 18080 states and 25522 transitions. [2022-10-15 21:15:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-15 21:15:51,787 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:51,787 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-10-15 21:15:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 21:15:51,788 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-10-15 21:15:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash 89382452, now seen corresponding path program 1 times [2022-10-15 21:15:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:51,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919832976] [2022-10-15 21:15:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 21:15:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:15:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:15:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-15 21:15:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 21:15:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 21:15:52,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:52,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919832976] [2022-10-15 21:15:52,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919832976] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:52,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:52,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:15:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567525283] [2022-10-15 21:15:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:15:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:15:52,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:15:52,208 INFO L87 Difference]: Start difference. First operand 18080 states and 25522 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)