/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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:20:21,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:20:21,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:20:21,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:20:21,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:20:21,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:20:21,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:20:21,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:20:21,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:20:21,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:20:21,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:20:21,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:20:21,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:20:21,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:20:21,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:20:21,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:20:21,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:20:21,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:20:21,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:20:21,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:20:21,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:20:21,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:20:21,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:20:21,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:20:21,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:20:21,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:20:21,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:20:21,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:20:21,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:20:21,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:20:21,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:20:21,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:20:21,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:20:21,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:20:21,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:20:21,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:20:21,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:20:21,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:20:21,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:20:21,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:20:21,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:20:21,973 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 21:20:22,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:20:22,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:20:22,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:20:22,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:20:22,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:20:22,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:20:22,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:20:22,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:20:22,042 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:20:22,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:20:22,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:20:22,044 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:20:22,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:20:22,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:20:22,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:20:22,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:20:22,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:20:22,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:20:22,046 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:20:22,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:20:22,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:20:22,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:20:22,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:20:22,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:20:22,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:20:22,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:20:22,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:20:22,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:20:22,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:20:22,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:20:22,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:20:22,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:20:22,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:20:22,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:20:22,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:20:22,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:20:22,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:20:22,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:20:22,526 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:20:22,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i [2022-10-15 21:20:22,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030831216/0c50d231bb4343e9b0ec22ce82138442/FLAG265767045 [2022-10-15 21:20:23,703 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:20:23,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i [2022-10-15 21:20:23,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030831216/0c50d231bb4343e9b0ec22ce82138442/FLAG265767045 [2022-10-15 21:20:24,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030831216/0c50d231bb4343e9b0ec22ce82138442 [2022-10-15 21:20:24,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:20:24,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:20:24,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:20:24,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:20:24,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:20:24,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:20:24" (1/1) ... [2022-10-15 21:20:24,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d541dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:24, skipping insertion in model container [2022-10-15 21:20:24,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:20:24" (1/1) ... [2022-10-15 21:20:24,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:20:24,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:20:24,799 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3724] [2022-10-15 21:20:24,800 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3725-3726] [2022-10-15 21:20:25,148 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i[111472,111485] [2022-10-15 21:20:25,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:20:25,943 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:20:26,059 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3724] [2022-10-15 21:20:26,059 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3725-3726] [2022-10-15 21:20:26,073 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-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i[111472,111485] [2022-10-15 21:20:26,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:20:26,499 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:20:26,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26 WrapperNode [2022-10-15 21:20:26,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:20:26,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:20:26,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:20:26,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:20:26,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:26,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:26,806 INFO L138 Inliner]: procedures = 205, calls = 1641, calls flagged for inlining = 86, calls inlined = 81, statements flattened = 3605 [2022-10-15 21:20:26,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:20:26,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:20:26,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:20:26,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:20:26,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:26,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:26,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:26,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:27,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:27,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:27,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:27,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:27,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:20:27,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:20:27,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:20:27,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:20:27,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (1/1) ... [2022-10-15 21:20:27,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:20:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:20:27,199 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 21:20:27,223 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 21:20:27,268 INFO L130 BoogieDeclarations]: Found specification of procedure get_setup [2022-10-15 21:20:27,268 INFO L138 BoogieDeclarations]: Found implementation of procedure get_setup [2022-10-15 21:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-10-15 21:20:27,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-10-15 21:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:20:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:20:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_format_set_silence [2022-10-15 21:20:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_format_set_silence [2022-10-15 21:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-15 21:20:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-15 21:20:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure byte_pos [2022-10-15 21:20:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure byte_pos [2022-10-15 21:20:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:20:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:20:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_trigger [2022-10-15 21:20:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_trigger [2022-10-15 21:20:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pcm_new [2022-10-15 21:20:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pcm_new [2022-10-15 21:20:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-15 21:20:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-15 21:20:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:20:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:20:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_open [2022-10-15 21:20:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_open [2022-10-15 21:20:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure params_change [2022-10-15 21:20:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure params_change [2022-10-15 21:20:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:20:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:20:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_set_ops [2022-10-15 21:20:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_set_ops [2022-10-15 21:20:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64 [2022-10-15 21:20:27,273 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64 [2022-10-15 21:20:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-10-15 21:20:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-10-15 21:20:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_timer_stop [2022-10-15 21:20:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_timer_stop [2022-10-15 21:20:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:20:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_hw_free [2022-10-15 21:20:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_hw_free [2022-10-15 21:20:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_cable_index [2022-10-15 21:20:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cable_index [2022-10-15 21:20:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_suspend_all [2022-10-15 21:20:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_suspend_all [2022-10-15 21:20:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:20:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-15 21:20:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-15 21:20:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2022-10-15 21:20:27,276 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2022-10-15 21:20:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-15 21:20:27,276 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-15 21:20:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:20:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:20:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_get_vmalloc_page [2022-10-15 21:20:27,276 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_get_vmalloc_page [2022-10-15 21:20:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:20:27,277 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:20:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_close [2022-10-15 21:20:27,277 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_close [2022-10-15 21:20:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-15 21:20:27,277 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-15 21:20:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-15 21:20:27,278 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-15 21:20:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_active_notify [2022-10-15 21:20:27,278 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_active_notify [2022-10-15 21:20:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:20:27,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:20:27,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:20:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-15 21:20:27,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-15 21:20:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pointer [2022-10-15 21:20:27,279 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pointer [2022-10-15 21:20:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:20:27,279 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_hw_params [2022-10-15 21:20:27,280 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_hw_params [2022-10-15 21:20:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:20:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure bytepos_finish [2022-10-15 21:20:27,280 INFO L138 BoogieDeclarations]: Found implementation of procedure bytepos_finish [2022-10-15 21:20:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_timer_start [2022-10-15 21:20:27,280 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_timer_start [2022-10-15 21:20:27,280 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_prepare [2022-10-15 21:20:27,281 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_prepare [2022-10-15 21:20:27,281 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-10-15 21:20:27,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-10-15 21:20:27,281 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_proc_new [2022-10-15 21:20:27,281 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_proc_new [2022-10-15 21:20:27,281 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:20:27,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:20:27,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:20:27,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:20:27,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:20:27,282 INFO L130 BoogieDeclarations]: Found specification of procedure bytepos_delta [2022-10-15 21:20:27,282 INFO L138 BoogieDeclarations]: Found implementation of procedure bytepos_delta [2022-10-15 21:20:27,282 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_suspend [2022-10-15 21:20:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_suspend [2022-10-15 21:20:27,283 INFO L130 BoogieDeclarations]: Found specification of procedure frames_to_bytes [2022-10-15 21:20:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure frames_to_bytes [2022-10-15 21:20:27,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:20:27,283 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-10-15 21:20:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-10-15 21:20:27,283 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_resume [2022-10-15 21:20:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_resume [2022-10-15 21:20:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_pos_update [2022-10-15 21:20:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_pos_update [2022-10-15 21:20:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure snd_pcm_lib_ioctl [2022-10-15 21:20:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_pcm_lib_ioctl [2022-10-15 21:20:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure snd_power_change_state [2022-10-15 21:20:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_power_change_state [2022-10-15 21:20:27,284 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2022-10-15 21:20:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2022-10-15 21:20:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-10-15 21:20:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-10-15 21:20:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure bytes_to_frames [2022-10-15 21:20:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bytes_to_frames [2022-10-15 21:20:27,285 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_unregister_all [2022-10-15 21:20:27,286 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_unregister_all [2022-10-15 21:20:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-15 21:20:27,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-15 21:20:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure clear_capture_buf [2022-10-15 21:20:27,286 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_capture_buf [2022-10-15 21:20:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure params_change_substream [2022-10-15 21:20:27,286 INFO L138 BoogieDeclarations]: Found implementation of procedure params_change_substream [2022-10-15 21:20:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:20:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:20:27,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:20:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-15 21:20:27,287 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-15 21:20:27,897 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:20:27,900 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:20:28,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:20:53,581 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:20:53,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:20:53,599 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 21:20:53,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:20:53 BoogieIcfgContainer [2022-10-15 21:20:53,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:20:53,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:20:53,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:20:53,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:20:53,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:20:24" (1/3) ... [2022-10-15 21:20:53,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5fd285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:20:53, skipping insertion in model container [2022-10-15 21:20:53,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:20:26" (2/3) ... [2022-10-15 21:20:53,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5fd285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:20:53, skipping insertion in model container [2022-10-15 21:20:53,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:20:53" (3/3) ... [2022-10-15 21:20:53,614 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-sound--drivers--snd-aloop.ko-entry_point.cil.out.i [2022-10-15 21:20:53,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:20:53,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-10-15 21:20:53,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:20:53,760 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;@6ad88139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:20:53,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2022-10-15 21:20:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 954 states, 683 states have (on average 1.452415812591508) internal successors, (992), 753 states have internal predecessors, (992), 167 states have call successors, (167), 56 states have call predecessors, (167), 55 states have return successors, (160), 153 states have call predecessors, (160), 160 states have call successors, (160) [2022-10-15 21:20:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-15 21:20:53,798 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:20:53,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 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 21:20:53,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting frames_to_bytesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_timer_1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_timer_1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, frames_to_bytesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 45 more)] === [2022-10-15 21:20:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:20:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash -129914908, now seen corresponding path program 1 times [2022-10-15 21:20:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:20:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866283007] [2022-10-15 21:20:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:20:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:20:54,210 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 21:20:54,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252139221] [2022-10-15 21:20:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:20:54,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:20:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:20:54,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:20:54,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:20:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:54,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:20:54,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:20:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:20:54,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:20:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:20:54,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866283007] [2022-10-15 21:20:54,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 21:20:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252139221] [2022-10-15 21:20:54,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252139221] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:20:54,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:20:54,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:20:54,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583025013] [2022-10-15 21:20:54,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:20:54,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:20:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:20:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:20:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:20:54,996 INFO L87 Difference]: Start difference. First operand has 954 states, 683 states have (on average 1.452415812591508) internal successors, (992), 753 states have internal predecessors, (992), 167 states have call successors, (167), 56 states have call predecessors, (167), 55 states have return successors, (160), 153 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:20:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:20:55,545 INFO L93 Difference]: Finished difference Result 2798 states and 3921 transitions. [2022-10-15 21:20:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:20:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-10-15 21:20:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:20:55,611 INFO L225 Difference]: With dead ends: 2798 [2022-10-15 21:20:55,611 INFO L226 Difference]: Without dead ends: 1815 [2022-10-15 21:20:55,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:20:55,633 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 1226 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:20:55,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 2681 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:20:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-10-15 21:20:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1769. [2022-10-15 21:20:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1316 states have (on average 1.4361702127659575) internal successors, (1890), 1394 states have internal predecessors, (1890), 297 states have call successors, (297), 108 states have call predecessors, (297), 108 states have return successors, (295), 280 states have call predecessors, (295), 295 states have call successors, (295) [2022-10-15 21:20:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2482 transitions. [2022-10-15 21:20:55,888 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2482 transitions. Word has length 40 [2022-10-15 21:20:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:20:55,889 INFO L495 AbstractCegarLoop]: Abstraction has 1769 states and 2482 transitions. [2022-10-15 21:20:55,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:20:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2482 transitions. [2022-10-15 21:20:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 21:20:55,894 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:20:55,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 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 21:20:55,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:20:56,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-15 21:20:56,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_timer_1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_timer_1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, frames_to_bytesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 45 more)] === [2022-10-15 21:20:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:20:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 508647304, now seen corresponding path program 1 times [2022-10-15 21:20:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:20:56,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176111954] [2022-10-15 21:20:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:20:56,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:20:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:20:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:20:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:20:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:20:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:20:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:20:56,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:20:56,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176111954] [2022-10-15 21:20:56,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176111954] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:20:56,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:20:56,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:20:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789572337] [2022-10-15 21:20:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:20:56,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:20:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:20:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:20:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:20:56,622 INFO L87 Difference]: Start difference. First operand 1769 states and 2482 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:20:58,805 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 21:21:02,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:21:04,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:21:08,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:21:10,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:21:12,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:21:14,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:21:15,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:21:15,126 INFO L93 Difference]: Finished difference Result 5163 states and 7310 transitions. [2022-10-15 21:21:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:21:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-10-15 21:21:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:21:15,168 INFO L225 Difference]: With dead ends: 5163 [2022-10-15 21:21:15,168 INFO L226 Difference]: Without dead ends: 3404 [2022-10-15 21:21:15,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 21:21:15,185 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 1416 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 390 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:21:15,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 3122 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 818 Invalid, 5 Unknown, 0 Unchecked, 18.1s Time] [2022-10-15 21:21:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2022-10-15 21:21:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3085. [2022-10-15 21:21:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 2318 states have (on average 1.4383088869715273) internal successors, (3334), 2419 states have internal predecessors, (3334), 526 states have call successors, (526), 194 states have call predecessors, (526), 193 states have return successors, (523), 495 states have call predecessors, (523), 523 states have call successors, (523) [2022-10-15 21:21:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4383 transitions. [2022-10-15 21:21:15,397 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4383 transitions. Word has length 42 [2022-10-15 21:21:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:21:15,398 INFO L495 AbstractCegarLoop]: Abstraction has 3085 states and 4383 transitions. [2022-10-15 21:21:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:21:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4383 transitions. [2022-10-15 21:21:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-15 21:21:15,407 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:21:15,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:15,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:21:15,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting frames_to_bytesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_timer_1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_timer_1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, frames_to_bytesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 45 more)] === [2022-10-15 21:21:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:21:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 713170444, now seen corresponding path program 1 times [2022-10-15 21:21:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:21:15,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009735010] [2022-10-15 21:21:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:21:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:21:15,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 21:21:15,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874279305] [2022-10-15 21:21:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:21:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:21:15,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:21:15,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:21:15,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:21:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:15,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:21:15,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:21:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:21:16,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:21:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:21:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009735010] [2022-10-15 21:21:16,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 21:21:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874279305] [2022-10-15 21:21:16,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874279305] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:21:16,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:21:16,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:21:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900154441] [2022-10-15 21:21:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:21:16,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:21:16,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:21:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:21:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:21:16,057 INFO L87 Difference]: Start difference. First operand 3085 states and 4383 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:21:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:21:16,545 INFO L93 Difference]: Finished difference Result 8580 states and 12216 transitions. [2022-10-15 21:21:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:21:16,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2022-10-15 21:21:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:21:16,590 INFO L225 Difference]: With dead ends: 8580 [2022-10-15 21:21:16,590 INFO L226 Difference]: Without dead ends: 5507 [2022-10-15 21:21:16,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:21:16,608 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 1190 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:21:16,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 2978 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:21:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2022-10-15 21:21:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 5452. [2022-10-15 21:21:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5452 states, 4191 states have (on average 1.439513242662849) internal successors, (6033), 4330 states have internal predecessors, (6033), 872 states have call successors, (872), 342 states have call predecessors, (872), 341 states have return successors, (867), 820 states have call predecessors, (867), 867 states have call successors, (867) [2022-10-15 21:21:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 7772 transitions. [2022-10-15 21:21:16,988 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 7772 transitions. Word has length 45 [2022-10-15 21:21:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:21:16,989 INFO L495 AbstractCegarLoop]: Abstraction has 5452 states and 7772 transitions. [2022-10-15 21:21:16,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:21:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 7772 transitions. [2022-10-15 21:21:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-15 21:21:16,993 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:21:16,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:17,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:21:17,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-15 21:21:17,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting loopback_unregister_allErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_timer_1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_timer_1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, frames_to_bytesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 45 more)] === [2022-10-15 21:21:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:21:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1446486253, now seen corresponding path program 1 times [2022-10-15 21:21:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:21:17,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442474224] [2022-10-15 21:21:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:21:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:21:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:21:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:21:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:21:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:21:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:17,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 21:21:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:21:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:21:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:21:17,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442474224] [2022-10-15 21:21:17,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442474224] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:21:17,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:21:17,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:21:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849282793] [2022-10-15 21:21:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:21:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:21:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:21:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:21:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:21:17,516 INFO L87 Difference]: Start difference. First operand 5452 states and 7772 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:21:20,256 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 []