/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:14:10,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:14:10,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:14:10,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:14:10,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:14:10,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:14:10,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:14:10,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:14:10,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:14:10,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:14:10,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:14:10,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:14:10,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:14:10,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:14:10,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:14:10,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:14:10,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:14:10,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:14:10,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:14:10,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:14:10,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:14:10,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:14:10,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:14:10,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:14:10,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:14:10,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:14:10,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:14:10,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:14:10,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:14:10,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:14:10,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:14:10,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:14:10,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:14:10,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:14:10,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:14:10,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:14:10,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:14:10,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:14:10,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:14:10,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:14:10,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:14:10,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:14:10,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:14:10,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:14:10,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:14:10,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:14:10,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:14:10,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:14:10,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:14:10,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:14:10,389 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:14:10,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:14:10,391 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:14:10,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:14:10,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:14:10,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:14:10,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:14:10,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:14:10,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:14:10,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:14:10,392 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:14:10,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:14:10,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:14:10,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:14:10,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:14:10,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:14:10,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:14:10,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:14:10,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:14:10,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:14:10,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:14:10,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:14:10,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:14:10,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:14:10,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:14:10,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:14:10,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:14:10,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:14:10,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:14:10,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:14:10,898 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:14:10,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2022-10-15 21:14:10,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f2e125e/6e27876b5e6e40c2b1c1ad357a88654d/FLAGf2d1af2c8 [2022-10-15 21:14:12,159 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:14:12,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2022-10-15 21:14:12,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f2e125e/6e27876b5e6e40c2b1c1ad357a88654d/FLAGf2d1af2c8 [2022-10-15 21:14:12,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f2e125e/6e27876b5e6e40c2b1c1ad357a88654d [2022-10-15 21:14:12,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:14:12,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:14:12,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:14:12,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:14:12,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:14:12,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:14:12" (1/1) ... [2022-10-15 21:14:12,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bb39de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:12, skipping insertion in model container [2022-10-15 21:14:12,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:14:12" (1/1) ... [2022-10-15 21:14:12,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:14:12,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:14:13,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2022-10-15 21:14:15,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:14:15,151 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:14:15,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2022-10-15 21:14:15,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:14:16,027 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:14:16,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16 WrapperNode [2022-10-15 21:14:16,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:14:16,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:14:16,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:14:16,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:14:16,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,314 INFO L138 Inliner]: procedures = 193, calls = 1202, calls flagged for inlining = 77, calls inlined = 49, statements flattened = 2378 [2022-10-15 21:14:16,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:14:16,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:14:16,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:14:16,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:14:16,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,707 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:14:16,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:14:16,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:14:16,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:14:16,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (1/1) ... [2022-10-15 21:14:16,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:14:16,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:14:16,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:14:16,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:14:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:14:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:14:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:14:16,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2022-10-15 21:14:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2022-10-15 21:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-15 21:14:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-15 21:14:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:14:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-10-15 21:14:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-10-15 21:14:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-10-15 21:14:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-10-15 21:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-10-15 21:14:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-10-15 21:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:14:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:14:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure can_newlink [2022-10-15 21:14:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure can_newlink [2022-10-15 21:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:14:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:14:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-10-15 21:14:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-10-15 21:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_25 [2022-10-15 21:14:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_25 [2022-10-15 21:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:14:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_xstats [2022-10-15 21:14:16,932 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_xstats [2022-10-15 21:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_rename_static [2022-10-15 21:14:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_rename_static [2022-10-15 21:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-15 21:14:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-15 21:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:14:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:14:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure nla_total_size [2022-10-15 21:14:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_total_size [2022-10-15 21:14:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure nla_data [2022-10-15 21:14:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_data [2022-10-15 21:14:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:14:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure can_update_spt [2022-10-15 21:14:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure can_update_spt [2022-10-15 21:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:14:16,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:14:16,935 INFO L130 BoogieDeclarations]: Found specification of procedure can_restart [2022-10-15 21:14:16,936 INFO L138 BoogieDeclarations]: Found implementation of procedure can_restart [2022-10-15 21:14:16,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:14:16,937 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-10-15 21:14:16,937 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-10-15 21:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:14:16,938 INFO L130 BoogieDeclarations]: Found specification of procedure can_skb_reserve [2022-10-15 21:14:16,938 INFO L138 BoogieDeclarations]: Found implementation of procedure can_skb_reserve [2022-10-15 21:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:14:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:14:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-15 21:14:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-15 21:14:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-10-15 21:14:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-10-15 21:14:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure can_skb_prv [2022-10-15 21:14:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure can_skb_prv [2022-10-15 21:14:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:14:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure can_flush_echo_skb [2022-10-15 21:14:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure can_flush_echo_skb [2022-10-15 21:14:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:14:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:14:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:14:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-10-15 21:14:16,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-10-15 21:14:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:14:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:14:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put [2022-10-15 21:14:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put [2022-10-15 21:14:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-10-15 21:14:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-10-15 21:14:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure can_get_xstats_size [2022-10-15 21:14:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure can_get_xstats_size [2022-10-15 21:14:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-10-15 21:14:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-10-15 21:14:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure can_get_bittiming [2022-10-15 21:14:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure can_get_bittiming [2022-10-15 21:14:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_info [2022-10-15 21:14:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_info [2022-10-15 21:14:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure can_get_size [2022-10-15 21:14:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure can_get_size [2022-10-15 21:14:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-15 21:14:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-15 21:14:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-15 21:14:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-15 21:14:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:14:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure can_changelink [2022-10-15 21:14:16,953 INFO L138 BoogieDeclarations]: Found implementation of procedure can_changelink [2022-10-15 21:14:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:14:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:14:17,608 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:14:17,614 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:14:18,207 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:14:21,422 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:14:21,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:14:21,443 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 21:14:21,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:14:21 BoogieIcfgContainer [2022-10-15 21:14:21,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:14:21,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:14:21,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:14:21,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:14:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:14:12" (1/3) ... [2022-10-15 21:14:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71452487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:14:21, skipping insertion in model container [2022-10-15 21:14:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:14:16" (2/3) ... [2022-10-15 21:14:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71452487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:14:21, skipping insertion in model container [2022-10-15 21:14:21,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:14:21" (3/3) ... [2022-10-15 21:14:21,460 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2022-10-15 21:14:21,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:14:21,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2022-10-15 21:14:21,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:14:21,592 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;@160b7d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:14:21,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2022-10-15 21:14:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 858 states, 599 states have (on average 1.5041736227045075) internal successors, (901), 702 states have internal predecessors, (901), 129 states have call successors, (129), 40 states have call predecessors, (129), 39 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-10-15 21:14:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 21:14:21,623 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:21,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:14:21,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 87 more)] === [2022-10-15 21:14:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:21,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1905997218, now seen corresponding path program 1 times [2022-10-15 21:14:21,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:21,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536223413] [2022-10-15 21:14:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:14:22,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:22,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536223413] [2022-10-15 21:14:22,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536223413] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:22,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:22,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:14:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719546494] [2022-10-15 21:14:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:22,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:14:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:22,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:14:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:14:22,755 INFO L87 Difference]: Start difference. First operand has 858 states, 599 states have (on average 1.5041736227045075) internal successors, (901), 702 states have internal predecessors, (901), 129 states have call successors, (129), 40 states have call predecessors, (129), 39 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-10-15 21:14:26,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-10-15 21:14:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:27,745 INFO L93 Difference]: Finished difference Result 2126 states and 2912 transitions. [2022-10-15 21:14:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:14:27,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 24 [2022-10-15 21:14:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:27,777 INFO L225 Difference]: With dead ends: 2126 [2022-10-15 21:14:27,778 INFO L226 Difference]: Without dead ends: 1230 [2022-10-15 21:14:27,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:14:27,796 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 731 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:27,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2400 Invalid, 1042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 834 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-10-15 21:14:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-10-15 21:14:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1078. [2022-10-15 21:14:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 772 states have (on average 1.4598445595854923) internal successors, (1127), 872 states have internal predecessors, (1127), 159 states have call successors, (159), 57 states have call predecessors, (159), 57 states have return successors, (159), 153 states have call predecessors, (159), 159 states have call successors, (159) [2022-10-15 21:14:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1445 transitions. [2022-10-15 21:14:27,987 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1445 transitions. Word has length 24 [2022-10-15 21:14:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:27,988 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1445 transitions. [2022-10-15 21:14:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-10-15 21:14:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1445 transitions. [2022-10-15 21:14:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 21:14:27,993 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:27,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:14:27,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:14:27,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting can_flush_echo_skbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 87 more)] === [2022-10-15 21:14:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:27,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1917866694, now seen corresponding path program 1 times [2022-10-15 21:14:27,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:27,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026026692] [2022-10-15 21:14:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:27,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:14:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:14:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:14:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:14:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:14:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:28,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026026692] [2022-10-15 21:14:28,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026026692] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:28,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:28,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:28,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188581279] [2022-10-15 21:14:28,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:28,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:28,696 INFO L87 Difference]: Start difference. First operand 1078 states and 1445 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:14:32,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-10-15 21:14:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:36,929 INFO L93 Difference]: Finished difference Result 4674 states and 6337 transitions. [2022-10-15 21:14:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:14:36,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-10-15 21:14:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:36,971 INFO L225 Difference]: With dead ends: 4674 [2022-10-15 21:14:36,971 INFO L226 Difference]: Without dead ends: 3603 [2022-10-15 21:14:36,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:14:36,986 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 3580 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 786 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:36,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3749 Valid, 3944 Invalid, 2750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [786 Valid, 1963 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-10-15 21:14:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2022-10-15 21:14:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3052. [2022-10-15 21:14:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 2315 states have (on average 1.4561555075593953) internal successors, (3371), 2434 states have internal predecessors, (3371), 472 states have call successors, (472), 173 states have call predecessors, (472), 175 states have return successors, (491), 458 states have call predecessors, (491), 472 states have call successors, (491) [2022-10-15 21:14:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4334 transitions. [2022-10-15 21:14:37,436 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4334 transitions. Word has length 50 [2022-10-15 21:14:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:37,437 INFO L495 AbstractCegarLoop]: Abstraction has 3052 states and 4334 transitions. [2022-10-15 21:14:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:14:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4334 transitions. [2022-10-15 21:14:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-15 21:14:37,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:37,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:14:37,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:14:37,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting can_flush_echo_skbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 87 more)] === [2022-10-15 21:14:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2106151342, now seen corresponding path program 1 times [2022-10-15 21:14:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:37,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004797563] [2022-10-15 21:14:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:37,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-15 21:14:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 21:14:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:14:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 21:14:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:14:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:38,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004797563] [2022-10-15 21:14:38,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004797563] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:38,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:38,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700461786] [2022-10-15 21:14:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:38,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:38,022 INFO L87 Difference]: Start difference. First operand 3052 states and 4334 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:14:41,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-10-15 21:14:45,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-10-15 21:14:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:47,753 INFO L93 Difference]: Finished difference Result 13190 states and 18963 transitions. [2022-10-15 21:14:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:14:47,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-10-15 21:14:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:47,872 INFO L225 Difference]: With dead ends: 13190 [2022-10-15 21:14:47,873 INFO L226 Difference]: Without dead ends: 10156 [2022-10-15 21:14:47,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:14:47,911 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 4471 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 1085 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4640 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:47,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4640 Valid, 3262 Invalid, 2560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1085 Valid, 1473 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-10-15 21:14:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states. [2022-10-15 21:14:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 8932. [2022-10-15 21:14:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8932 states, 6919 states have (on average 1.4544009249891603) internal successors, (10063), 7087 states have internal predecessors, (10063), 1400 states have call successors, (1400), 515 states have call predecessors, (1400), 523 states have return successors, (1511), 1368 states have call predecessors, (1511), 1400 states have call successors, (1511) [2022-10-15 21:14:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8932 states to 8932 states and 12974 transitions. [2022-10-15 21:14:48,680 INFO L78 Accepts]: Start accepts. Automaton has 8932 states and 12974 transitions. Word has length 51 [2022-10-15 21:14:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:48,681 INFO L495 AbstractCegarLoop]: Abstraction has 8932 states and 12974 transitions. [2022-10-15 21:14:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:14:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8932 states and 12974 transitions. [2022-10-15 21:14:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:14:48,687 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:48,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:14:48,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:14:48,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting can_flush_echo_skbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 87 more)] === [2022-10-15 21:14:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash 946725798, now seen corresponding path program 1 times [2022-10-15 21:14:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:48,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648006079] [2022-10-15 21:14:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:14:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:49,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:14:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 21:14:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 21:14:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:14:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:49,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648006079] [2022-10-15 21:14:49,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648006079] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:49,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:49,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:14:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667484553] [2022-10-15 21:14:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:14:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:14:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:14:49,361 INFO L87 Difference]: Start difference. First operand 8932 states and 12974 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:14:52,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-10-15 21:14:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:53,928 INFO L93 Difference]: Finished difference Result 10196 states and 14981 transitions. [2022-10-15 21:14:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:14:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-10-15 21:14:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:54,045 INFO L225 Difference]: With dead ends: 10196 [2022-10-15 21:14:54,045 INFO L226 Difference]: Without dead ends: 10194 [2022-10-15 21:14:54,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:14:54,062 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 274 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 138 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:54,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 2356 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-10-15 21:14:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10194 states. [2022-10-15 21:14:54,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10194 to 9076. [2022-10-15 21:14:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9076 states, 7045 states have (on average 1.4513839602555003) internal successors, (10225), 7213 states have internal predecessors, (10225), 1418 states have call successors, (1418), 515 states have call predecessors, (1418), 523 states have return successors, (1529), 1386 states have call predecessors, (1529), 1418 states have call successors, (1529) [2022-10-15 21:14:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9076 states to 9076 states and 13172 transitions. [2022-10-15 21:14:54,917 INFO L78 Accepts]: Start accepts. Automaton has 9076 states and 13172 transitions. Word has length 49 [2022-10-15 21:14:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:54,918 INFO L495 AbstractCegarLoop]: Abstraction has 9076 states and 13172 transitions. [2022-10-15 21:14:54,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:14:54,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9076 states and 13172 transitions. [2022-10-15 21:14:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-15 21:14:54,920 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:54,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:14:54,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:14:54,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 87 more)] === [2022-10-15 21:14:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1175882327, now seen corresponding path program 1 times [2022-10-15 21:14:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:54,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122375947] [2022-10-15 21:14:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:54,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:14:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:55,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-15 21:14:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-15 21:14:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 21:14:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:14:55,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:55,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122375947] [2022-10-15 21:14:55,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122375947] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:55,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:55,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307230609] [2022-10-15 21:14:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:55,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:55,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:55,411 INFO L87 Difference]: Start difference. First operand 9076 states and 13172 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:14:58,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []