/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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 13:06:23,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 13:06:23,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 13:06:23,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 13:06:23,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 13:06:23,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 13:06:23,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 13:06:23,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 13:06:23,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 13:06:23,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 13:06:23,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 13:06:23,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 13:06:23,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 13:06:23,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 13:06:23,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 13:06:23,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 13:06:23,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 13:06:23,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 13:06:23,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 13:06:23,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 13:06:23,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 13:06:23,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 13:06:23,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 13:06:23,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 13:06:23,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 13:06:23,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 13:06:23,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 13:06:23,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 13:06:23,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 13:06:23,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 13:06:23,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 13:06:23,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 13:06:23,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 13:06:23,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 13:06:23,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 13:06:23,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 13:06:23,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 13:06:23,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 13:06:23,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 13:06:23,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 13:06:23,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 13:06:23,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 13:06:23,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 13:06:23,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 13:06:23,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 13:06:23,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 13:06:23,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 13:06:23,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 13:06:23,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 13:06:23,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 13:06:23,630 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 13:06:23,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 13:06:23,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 13:06:23,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 13:06:23,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 13:06:23,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 13:06:23,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 13:06:23,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 13:06:23,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 13:06:23,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 13:06:23,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 13:06:23,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 13:06:23,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:06:23,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 13:06:23,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 13:06:23,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 13:06:23,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 13:06:23,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 13:06:23,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 13:06:23,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 13:06:24,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 13:06:24,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 13:06:24,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 13:06:24,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 13:06:24,080 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 13:06:24,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-10-16 13:06:24,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a02b9a91/572009eaa64e46c18e0061a836d4067b/FLAG2a1315c77 [2022-10-16 13:06:25,164 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 13:06:25,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-10-16 13:06:25,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a02b9a91/572009eaa64e46c18e0061a836d4067b/FLAG2a1315c77 [2022-10-16 13:06:25,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a02b9a91/572009eaa64e46c18e0061a836d4067b [2022-10-16 13:06:25,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 13:06:25,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 13:06:25,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 13:06:25,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 13:06:25,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 13:06:25,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:06:25" (1/1) ... [2022-10-16 13:06:25,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f9d3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:25, skipping insertion in model container [2022-10-16 13:06:25,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:06:25" (1/1) ... [2022-10-16 13:06:25,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 13:06:25,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 13:06:26,724 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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2022-10-16 13:06:26,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:06:26,997 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 13:06:27,180 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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2022-10-16 13:06:27,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:06:27,348 INFO L208 MainTranslator]: Completed translation [2022-10-16 13:06:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27 WrapperNode [2022-10-16 13:06:27,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 13:06:27,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 13:06:27,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 13:06:27,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 13:06:27,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,514 INFO L138 Inliner]: procedures = 82, calls = 140, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 485 [2022-10-16 13:06:27,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 13:06:27,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 13:06:27,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 13:06:27,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 13:06:27,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 13:06:27,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 13:06:27,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 13:06:27,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 13:06:27,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (1/1) ... [2022-10-16 13:06:27,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:06:27,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:27,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 13:06:27,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 13:06:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 13:06:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 13:06:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 13:06:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 13:06:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 13:06:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 13:06:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-16 13:06:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-16 13:06:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 13:06:27,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 13:06:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-16 13:06:27,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-16 13:06:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-16 13:06:27,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-16 13:06:27,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 13:06:27,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 13:06:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 13:06:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 13:06:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-16 13:06:27,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-16 13:06:27,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 13:06:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-16 13:06:27,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-16 13:06:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-16 13:06:27,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-16 13:06:27,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 13:06:27,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 13:06:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 13:06:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 13:06:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-10-16 13:06:27,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-10-16 13:06:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 13:06:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-16 13:06:27,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-16 13:06:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 13:06:27,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 13:06:28,193 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 13:06:28,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 13:06:28,346 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-16 13:06:28,999 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 13:06:29,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 13:06:29,016 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 13:06:29,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:06:29 BoogieIcfgContainer [2022-10-16 13:06:29,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 13:06:29,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 13:06:29,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 13:06:29,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 13:06:29,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:06:25" (1/3) ... [2022-10-16 13:06:29,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2497ce19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:06:29, skipping insertion in model container [2022-10-16 13:06:29,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:06:27" (2/3) ... [2022-10-16 13:06:29,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2497ce19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:06:29, skipping insertion in model container [2022-10-16 13:06:29,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:06:29" (3/3) ... [2022-10-16 13:06:29,033 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-10-16 13:06:29,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 13:06:29,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-10-16 13:06:29,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 13:06:29,162 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;@2c638c2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 13:06:29,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-10-16 13:06:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 161 states have (on average 1.546583850931677) internal successors, (249), 199 states have internal predecessors, (249), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 13:06:29,180 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:29,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:29,183 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 31 more)] === [2022-10-16 13:06:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1499353182, now seen corresponding path program 1 times [2022-10-16 13:06:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:29,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090555792] [2022-10-16 13:06:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 13:06:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 13:06:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:29,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090555792] [2022-10-16 13:06:29,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090555792] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:29,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:06:29,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:06:29,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057863262] [2022-10-16 13:06:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:29,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:06:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:06:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:06:29,921 INFO L87 Difference]: Start difference. First operand has 227 states, 161 states have (on average 1.546583850931677) internal successors, (249), 199 states have internal predecessors, (249), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 13:06:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:30,538 INFO L93 Difference]: Finished difference Result 533 states and 706 transitions. [2022-10-16 13:06:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:06:30,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-10-16 13:06:30,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:30,559 INFO L225 Difference]: With dead ends: 533 [2022-10-16 13:06:30,559 INFO L226 Difference]: Without dead ends: 280 [2022-10-16 13:06:30,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:06:30,570 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 137 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:30,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 623 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:06:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-10-16 13:06:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 242. [2022-10-16 13:06:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 181 states have (on average 1.4751381215469612) internal successors, (267), 212 states have internal predecessors, (267), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 305 transitions. [2022-10-16 13:06:30,653 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 305 transitions. Word has length 23 [2022-10-16 13:06:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:30,654 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 305 transitions. [2022-10-16 13:06:30,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 13:06:30,655 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 305 transitions. [2022-10-16 13:06:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 13:06:30,656 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:30,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:30,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 13:06:30,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 910371429, now seen corresponding path program 1 times [2022-10-16 13:06:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:30,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425308345] [2022-10-16 13:06:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 13:06:30,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:30,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425308345] [2022-10-16 13:06:30,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425308345] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:30,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:06:30,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:06:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252362370] [2022-10-16 13:06:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:30,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:06:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:06:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:06:30,975 INFO L87 Difference]: Start difference. First operand 242 states and 305 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 13:06:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:31,355 INFO L93 Difference]: Finished difference Result 511 states and 655 transitions. [2022-10-16 13:06:31,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:06:31,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-10-16 13:06:31,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:31,360 INFO L225 Difference]: With dead ends: 511 [2022-10-16 13:06:31,360 INFO L226 Difference]: Without dead ends: 288 [2022-10-16 13:06:31,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:06:31,364 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 64 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:31,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 578 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 13:06:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-10-16 13:06:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 252. [2022-10-16 13:06:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 222 states have internal predecessors, (279), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 317 transitions. [2022-10-16 13:06:31,391 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 317 transitions. Word has length 23 [2022-10-16 13:06:31,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:31,392 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 317 transitions. [2022-10-16 13:06:31,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 13:06:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 317 transitions. [2022-10-16 13:06:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 13:06:31,393 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:31,393 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] [2022-10-16 13:06:31,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 13:06:31,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:31,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:31,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1386928104, now seen corresponding path program 1 times [2022-10-16 13:06:31,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:31,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867924522] [2022-10-16 13:06:31,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:31,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 13:06:31,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:31,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867924522] [2022-10-16 13:06:31,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867924522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:31,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:06:31,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:06:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087219310] [2022-10-16 13:06:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:31,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:06:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:06:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:06:31,521 INFO L87 Difference]: Start difference. First operand 252 states and 317 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 13:06:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:31,839 INFO L93 Difference]: Finished difference Result 288 states and 365 transitions. [2022-10-16 13:06:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:06:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-10-16 13:06:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:31,843 INFO L225 Difference]: With dead ends: 288 [2022-10-16 13:06:31,843 INFO L226 Difference]: Without dead ends: 287 [2022-10-16 13:06:31,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:06:31,845 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 65 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:31,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 573 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 13:06:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-16 13:06:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 251. [2022-10-16 13:06:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 191 states have (on average 1.450261780104712) internal successors, (277), 221 states have internal predecessors, (277), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 315 transitions. [2022-10-16 13:06:31,868 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 315 transitions. Word has length 28 [2022-10-16 13:06:31,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 315 transitions. [2022-10-16 13:06:31,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 13:06:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 315 transitions. [2022-10-16 13:06:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 13:06:31,870 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:31,870 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 13:06:31,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 13:06:31,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:31,872 INFO L85 PathProgramCache]: Analyzing trace with hash -45097810, now seen corresponding path program 1 times [2022-10-16 13:06:31,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:31,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862121341] [2022-10-16 13:06:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:31,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 13:06:32,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:32,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862121341] [2022-10-16 13:06:32,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862121341] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:32,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783035443] [2022-10-16 13:06:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:32,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:32,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 13:06:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:06:32,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 13:06:32,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:06:32,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783035443] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:32,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:06:32,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:06:32,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184513665] [2022-10-16 13:06:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:32,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:06:32,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:06:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:06:32,301 INFO L87 Difference]: Start difference. First operand 251 states and 315 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 13:06:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:32,374 INFO L93 Difference]: Finished difference Result 264 states and 334 transitions. [2022-10-16 13:06:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:06:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-10-16 13:06:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:32,379 INFO L225 Difference]: With dead ends: 264 [2022-10-16 13:06:32,380 INFO L226 Difference]: Without dead ends: 263 [2022-10-16 13:06:32,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:06:32,388 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 256 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:32,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 399 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:06:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-10-16 13:06:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 242. [2022-10-16 13:06:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 183 states have (on average 1.4480874316939891) internal successors, (265), 212 states have internal predecessors, (265), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 303 transitions. [2022-10-16 13:06:32,417 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 303 transitions. Word has length 29 [2022-10-16 13:06:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:32,423 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 303 transitions. [2022-10-16 13:06:32,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 13:06:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 303 transitions. [2022-10-16 13:06:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 13:06:32,429 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:32,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:32,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 13:06:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:32,633 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 31 more)] === [2022-10-16 13:06:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 854568903, now seen corresponding path program 1 times [2022-10-16 13:06:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:32,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192375428] [2022-10-16 13:06:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-16 13:06:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 13:06:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 13:06:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192375428] [2022-10-16 13:06:32,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192375428] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:32,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704310520] [2022-10-16 13:06:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:32,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:32,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:32,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 13:06:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:33,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:06:33,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:06:33,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:06:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:33,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704310520] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:06:33,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:06:33,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-10-16 13:06:33,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356972924] [2022-10-16 13:06:33,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:06:33,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:06:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:06:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:06:33,105 INFO L87 Difference]: Start difference. First operand 242 states and 303 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:33,554 INFO L93 Difference]: Finished difference Result 531 states and 675 transitions. [2022-10-16 13:06:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:06:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-10-16 13:06:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:33,558 INFO L225 Difference]: With dead ends: 531 [2022-10-16 13:06:33,559 INFO L226 Difference]: Without dead ends: 308 [2022-10-16 13:06:33,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:06:33,561 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 92 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:33,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 951 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:06:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-10-16 13:06:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 272. [2022-10-16 13:06:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 213 states have (on average 1.4131455399061033) internal successors, (301), 242 states have internal predecessors, (301), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 339 transitions. [2022-10-16 13:06:33,583 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 339 transitions. Word has length 54 [2022-10-16 13:06:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:33,584 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 339 transitions. [2022-10-16 13:06:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 339 transitions. [2022-10-16 13:06:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-16 13:06:33,587 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:33,588 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:33,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 13:06:33,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:33,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:33,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1059200108, now seen corresponding path program 2 times [2022-10-16 13:06:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:33,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754997833] [2022-10-16 13:06:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 13:06:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 13:06:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-16 13:06:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 13:06:34,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:34,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754997833] [2022-10-16 13:06:34,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754997833] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:34,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:06:34,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:06:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048928583] [2022-10-16 13:06:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:34,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:06:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:06:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:06:34,471 INFO L87 Difference]: Start difference. First operand 272 states and 339 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 13:06:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:34,996 INFO L93 Difference]: Finished difference Result 454 states and 593 transitions. [2022-10-16 13:06:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:06:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 69 [2022-10-16 13:06:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:35,001 INFO L225 Difference]: With dead ends: 454 [2022-10-16 13:06:35,002 INFO L226 Difference]: Without dead ends: 450 [2022-10-16 13:06:35,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:06:35,003 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 294 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:35,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 808 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:06:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-10-16 13:06:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 268. [2022-10-16 13:06:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 213 states have (on average 1.3943661971830985) internal successors, (297), 238 states have internal predecessors, (297), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 335 transitions. [2022-10-16 13:06:35,029 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 335 transitions. Word has length 69 [2022-10-16 13:06:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:35,029 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 335 transitions. [2022-10-16 13:06:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 13:06:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 335 transitions. [2022-10-16 13:06:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 13:06:35,032 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:35,032 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:35,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 13:06:35,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1524535253, now seen corresponding path program 1 times [2022-10-16 13:06:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:35,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257835547] [2022-10-16 13:06:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:35,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 13:06:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 13:06:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-16 13:06:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:35,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:35,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257835547] [2022-10-16 13:06:35,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257835547] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:35,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756665849] [2022-10-16 13:06:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:35,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:35,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:35,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 13:06:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:35,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 13:06:35,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:06:35,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:06:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:35,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756665849] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:06:35,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:06:35,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-10-16 13:06:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086782501] [2022-10-16 13:06:35,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:06:35,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 13:06:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 13:06:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-10-16 13:06:35,684 INFO L87 Difference]: Start difference. First operand 268 states and 335 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:36,138 INFO L93 Difference]: Finished difference Result 613 states and 781 transitions. [2022-10-16 13:06:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 13:06:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-10-16 13:06:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:36,142 INFO L225 Difference]: With dead ends: 613 [2022-10-16 13:06:36,142 INFO L226 Difference]: Without dead ends: 364 [2022-10-16 13:06:36,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-10-16 13:06:36,144 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 140 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:36,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 937 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:06:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-10-16 13:06:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 328. [2022-10-16 13:06:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 273 states have (on average 1.3516483516483517) internal successors, (369), 298 states have internal predecessors, (369), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:36,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 407 transitions. [2022-10-16 13:06:36,192 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 407 transitions. Word has length 70 [2022-10-16 13:06:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:36,193 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 407 transitions. [2022-10-16 13:06:36,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 13 states have internal predecessors, (90), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 407 transitions. [2022-10-16 13:06:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 13:06:36,196 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:36,196 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:36,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-16 13:06:36,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:36,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1682170827, now seen corresponding path program 2 times [2022-10-16 13:06:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:36,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178524362] [2022-10-16 13:06:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:36,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-16 13:06:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 13:06:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-16 13:06:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 2 proven. 235 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:37,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:37,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178524362] [2022-10-16 13:06:37,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178524362] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:37,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916764994] [2022-10-16 13:06:37,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 13:06:37,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:37,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:37,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:37,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 13:06:37,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 13:06:37,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:06:37,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 13:06:37,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 10 proven. 235 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:06:37,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:06:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 2 proven. 235 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:37,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916764994] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:06:37,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:06:37,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-10-16 13:06:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320129972] [2022-10-16 13:06:37,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:06:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 13:06:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 13:06:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-10-16 13:06:37,746 INFO L87 Difference]: Start difference. First operand 328 states and 407 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:38,413 INFO L93 Difference]: Finished difference Result 793 states and 1009 transitions. [2022-10-16 13:06:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-16 13:06:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 100 [2022-10-16 13:06:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:38,419 INFO L225 Difference]: With dead ends: 793 [2022-10-16 13:06:38,420 INFO L226 Difference]: Without dead ends: 484 [2022-10-16 13:06:38,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2022-10-16 13:06:38,423 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 249 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:38,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1131 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:06:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-10-16 13:06:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 448. [2022-10-16 13:06:38,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 393 states have (on average 1.3053435114503817) internal successors, (513), 418 states have internal predecessors, (513), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 551 transitions. [2022-10-16 13:06:38,481 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 551 transitions. Word has length 100 [2022-10-16 13:06:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:38,483 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 551 transitions. [2022-10-16 13:06:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 551 transitions. [2022-10-16 13:06:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-10-16 13:06:38,495 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:38,495 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:38,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 13:06:38,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:38,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:38,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash -270041867, now seen corresponding path program 3 times [2022-10-16 13:06:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:38,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769094607] [2022-10-16 13:06:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:38,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-10-16 13:06:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 13:06:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-16 13:06:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 2 proven. 1177 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:06:40,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:40,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769094607] [2022-10-16 13:06:40,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769094607] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:40,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724114829] [2022-10-16 13:06:40,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 13:06:40,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:40,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:40,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 13:06:40,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 13:06:40,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:06:40,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 13:06:40,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2022-10-16 13:06:40,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:06:40,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724114829] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:40,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:06:40,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [26] total 27 [2022-10-16 13:06:40,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872887794] [2022-10-16 13:06:40,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:40,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:06:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:06:40,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-10-16 13:06:40,725 INFO L87 Difference]: Start difference. First operand 448 states and 551 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:06:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:40,771 INFO L93 Difference]: Finished difference Result 879 states and 1084 transitions. [2022-10-16 13:06:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:06:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 160 [2022-10-16 13:06:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:40,775 INFO L225 Difference]: With dead ends: 879 [2022-10-16 13:06:40,775 INFO L226 Difference]: Without dead ends: 449 [2022-10-16 13:06:40,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2022-10-16 13:06:40,778 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:40,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:06:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-10-16 13:06:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-10-16 13:06:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 394 states have (on average 1.3045685279187818) internal successors, (514), 419 states have internal predecessors, (514), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2022-10-16 13:06:40,817 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 160 [2022-10-16 13:06:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:40,818 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2022-10-16 13:06:40,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:06:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2022-10-16 13:06:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-10-16 13:06:40,820 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:40,821 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:40,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 13:06:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:41,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -942364560, now seen corresponding path program 1 times [2022-10-16 13:06:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:41,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277315627] [2022-10-16 13:06:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:42,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-16 13:06:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-16 13:06:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-10-16 13:06:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 2 proven. 1177 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 13:06:42,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:42,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277315627] [2022-10-16 13:06:42,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277315627] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:42,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299738777] [2022-10-16 13:06:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:42,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:42,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:42,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:42,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 13:06:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:43,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 13:06:43,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 10 proven. 1177 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 13:06:43,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:06:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 2 proven. 1177 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 13:06:44,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299738777] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:06:44,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:06:44,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-10-16 13:06:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016638020] [2022-10-16 13:06:44,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:06:44,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-10-16 13:06:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-10-16 13:06:44,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 13:06:44,269 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand has 50 states, 50 states have (on average 5.42) internal successors, (271), 49 states have internal predecessors, (271), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:45,176 INFO L93 Difference]: Finished difference Result 1154 states and 1466 transitions. [2022-10-16 13:06:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 13:06:45,178 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.42) internal successors, (271), 49 states have internal predecessors, (271), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 161 [2022-10-16 13:06:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:45,182 INFO L225 Difference]: With dead ends: 1154 [2022-10-16 13:06:45,183 INFO L226 Difference]: Without dead ends: 725 [2022-10-16 13:06:45,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 13:06:45,186 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 480 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:45,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 973 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 13:06:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2022-10-16 13:06:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 689. [2022-10-16 13:06:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 634 states have (on average 1.2649842271293374) internal successors, (802), 659 states have internal predecessors, (802), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 840 transitions. [2022-10-16 13:06:45,258 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 840 transitions. Word has length 161 [2022-10-16 13:06:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:45,259 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 840 transitions. [2022-10-16 13:06:45,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.42) internal successors, (271), 49 states have internal predecessors, (271), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 840 transitions. [2022-10-16 13:06:45,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-10-16 13:06:45,264 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:45,265 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:45,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 13:06:45,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:45,479 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 31 more)] === [2022-10-16 13:06:45,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1765374736, now seen corresponding path program 2 times [2022-10-16 13:06:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:45,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817336040] [2022-10-16 13:06:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-10-16 13:06:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-10-16 13:06:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:50,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-10-16 13:06:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 2 proven. 5221 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 13:06:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:50,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817336040] [2022-10-16 13:06:50,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817336040] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:50,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144929] [2022-10-16 13:06:50,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 13:06:50,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:50,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:50,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:50,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 13:06:50,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 13:06:50,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:06:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 13:06:50,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 10 proven. 5221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 13:06:50,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:06:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 2 proven. 5221 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 13:06:54,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144929] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:06:54,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:06:54,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-10-16 13:06:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055677324] [2022-10-16 13:06:54,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:06:54,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-10-16 13:06:54,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-10-16 13:06:54,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-10-16 13:06:54,461 INFO L87 Difference]: Start difference. First operand 689 states and 840 transitions. Second operand has 98 states, 98 states have (on average 5.214285714285714) internal successors, (511), 97 states have internal predecessors, (511), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:56,620 INFO L93 Difference]: Finished difference Result 1874 states and 2378 transitions. [2022-10-16 13:06:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-10-16 13:06:56,621 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 5.214285714285714) internal successors, (511), 97 states have internal predecessors, (511), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 281 [2022-10-16 13:06:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:56,629 INFO L225 Difference]: With dead ends: 1874 [2022-10-16 13:06:56,630 INFO L226 Difference]: Without dead ends: 1205 [2022-10-16 13:06:56,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2022-10-16 13:06:56,638 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1090 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:56,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1387 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 13:06:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-10-16 13:06:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1169. [2022-10-16 13:06:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1114 states have (on average 1.236983842010772) internal successors, (1378), 1139 states have internal predecessors, (1378), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-16 13:06:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1416 transitions. [2022-10-16 13:06:56,730 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1416 transitions. Word has length 281 [2022-10-16 13:06:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:56,731 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1416 transitions. [2022-10-16 13:06:56,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 5.214285714285714) internal successors, (511), 97 states have internal predecessors, (511), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:06:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1416 transitions. [2022-10-16 13:06:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-10-16 13:06:56,743 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:56,744 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:06:56,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 13:06:56,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:56,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-10-16 13:06:56,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1577041392, now seen corresponding path program 3 times [2022-10-16 13:06:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:56,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912415329] [2022-10-16 13:06:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:56,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:07:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:07:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:07:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2022-10-16 13:07:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:07:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2022-10-16 13:07:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:07:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-10-16 13:07:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:07:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21964 backedges. 2 proven. 21949 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 13:07:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:07:10,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912415329] [2022-10-16 13:07:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912415329] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:07:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521192633] [2022-10-16 13:07:10,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 13:07:10,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:07:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:07:10,744 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:07:10,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process