/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:07:17,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:07:17,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:07:17,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:07:17,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:07:17,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:07:17,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:07:17,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:07:17,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:07:17,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:07:17,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:07:17,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:07:17,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:07:17,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:07:17,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:07:17,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:07:17,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:07:17,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:07:17,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:07:17,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:07:17,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:07:17,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:07:17,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:07:17,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:07:17,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 01:07:17,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 01:07:17,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 01:07:17,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 01:07:17,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 01:07:17,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 01:07:17,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:07:17,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:07:17,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:07:17,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:07:17,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:07:17,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:07:17,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:07:17,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:07:17,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:07:17,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:07:17,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:07:17,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:07:17,222 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:07:17,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:07:17,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:07:17,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:07:17,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:07:17,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:07:17,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:07:17,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:07:17,225 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:07:17,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:07:17,226 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:07:17,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:07:17,227 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:07:17,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:07:17,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:07:17,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:07:17,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:07:17,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:07:17,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:07:17,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:07:17,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:07:17,230 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:07:17,230 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:07:17,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:07:17,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:07:17,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:07:17,489 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:07:17,490 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:07:17,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2023-04-02 01:07:18,661 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:07:18,914 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:07:18,914 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2023-04-02 01:07:18,926 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec583c78d/f043577a38f1472d904b828a35678abc/FLAGbbac091c4 [2023-04-02 01:07:18,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec583c78d/f043577a38f1472d904b828a35678abc [2023-04-02 01:07:18,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:07:18,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:07:18,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:07:18,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:07:18,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:07:18,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:07:18" (1/1) ... [2023-04-02 01:07:18,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c95645f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:18, skipping insertion in model container [2023-04-02 01:07:18,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:07:18" (1/1) ... [2023-04-02 01:07:18,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:07:18,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:07:19,264 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2023-04-02 01:07:19,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:07:19,280 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:07:19,322 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2023-04-02 01:07:19,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:07:19,346 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:07:19,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19 WrapperNode [2023-04-02 01:07:19,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:07:19,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:07:19,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:07:19,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:07:19,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:07:19,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:07:19,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:07:19,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:07:19,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (1/1) ... [2023-04-02 01:07:19,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:07:19,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:07:19,428 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) [2023-04-02 01:07:19,431 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 [2023-04-02 01:07:19,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:07:19,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:07:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:07:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 01:07:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 01:07:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-04-02 01:07:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-04-02 01:07:19,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2023-04-02 01:07:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2023-04-02 01:07:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_get_data_at [2023-04-02 01:07:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_update_at [2023-04-02 01:07:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:07:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:07:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:07:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:07:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:07:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 01:07:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 01:07:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 01:07:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 01:07:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 01:07:19,471 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 01:07:19,472 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 01:07:19,473 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 01:07:19,474 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 01:07:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 01:07:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 01:07:19,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure dll_get_data_at [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure dll_update_at [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:07:19,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:07:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:07:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:07:19,771 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:07:19,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:07:19,832 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-04-02 01:07:19,947 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:07:19,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:07:19,953 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-04-02 01:07:19,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:07:19 BoogieIcfgContainer [2023-04-02 01:07:19,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:07:19,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:07:19,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:07:19,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:07:19,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:07:18" (1/3) ... [2023-04-02 01:07:19,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597d1c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:07:19, skipping insertion in model container [2023-04-02 01:07:19,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:07:19" (2/3) ... [2023-04-02 01:07:19,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597d1c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:07:19, skipping insertion in model container [2023-04-02 01:07:19,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:07:19" (3/3) ... [2023-04-02 01:07:19,963 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2023-04-02 01:07:19,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:07:19,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:07:20,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:07:20,028 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=PETRI_NET, 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;@4badd03a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:07:20,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:07:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:07:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 01:07:20,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:07:20,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:07:20,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:07:20,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:07:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1957040159, now seen corresponding path program 1 times [2023-04-02 01:07:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:07:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445978189] [2023-04-02 01:07:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:07:20,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:07:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:07:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:07:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 01:07:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:07:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:07:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445978189] [2023-04-02 01:07:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445978189] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:07:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:07:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:07:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013860432] [2023-04-02 01:07:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:07:20,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:07:20,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:07:20,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:07:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:07:20,334 INFO L87 Difference]: Start difference. First operand has 51 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:07:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:07:20,596 INFO L93 Difference]: Finished difference Result 108 states and 151 transitions. [2023-04-02 01:07:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 01:07:20,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-04-02 01:07:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:07:20,609 INFO L225 Difference]: With dead ends: 108 [2023-04-02 01:07:20,609 INFO L226 Difference]: Without dead ends: 53 [2023-04-02 01:07:20,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:07:20,618 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:07:20,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 7 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:07:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-02 01:07:20,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2023-04-02 01:07:20,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:07:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-04-02 01:07:20,667 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2023-04-02 01:07:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:07:20,668 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-04-02 01:07:20,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:07:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-04-02 01:07:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 01:07:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:07:20,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:07:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:07:20,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:07:20,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:07:20,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1053461126, now seen corresponding path program 1 times [2023-04-02 01:07:20,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:07:20,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374370671] [2023-04-02 01:07:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:07:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:07:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:07:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:07:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 01:07:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:07:20,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:07:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374370671] [2023-04-02 01:07:20,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374370671] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:07:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:07:20,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:07:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544137515] [2023-04-02 01:07:20,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:07:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:07:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:07:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:07:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:07:20,978 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:07:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:07:21,225 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2023-04-02 01:07:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 01:07:21,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-04-02 01:07:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:07:21,230 INFO L225 Difference]: With dead ends: 68 [2023-04-02 01:07:21,231 INFO L226 Difference]: Without dead ends: 43 [2023-04-02 01:07:21,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:07:21,238 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 75 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:07:21,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 9 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:07:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-04-02 01:07:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2023-04-02 01:07:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:07:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-04-02 01:07:21,260 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2023-04-02 01:07:21,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:07:21,263 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-04-02 01:07:21,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:07:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-04-02 01:07:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 01:07:21,264 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:07:21,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:07:21,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:07:21,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:07:21,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:07:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash -524940760, now seen corresponding path program 1 times [2023-04-02 01:07:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:07:21,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030868562] [2023-04-02 01:07:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:07:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:07:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:07:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:07:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 01:07:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:07:21,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:07:21,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030868562] [2023-04-02 01:07:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030868562] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:07:21,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:07:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 01:07:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958608298] [2023-04-02 01:07:21,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:07:21,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:07:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:07:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:07:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:07:21,461 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:07:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:07:21,607 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2023-04-02 01:07:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:07:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-04-02 01:07:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:07:21,609 INFO L225 Difference]: With dead ends: 73 [2023-04-02 01:07:21,609 INFO L226 Difference]: Without dead ends: 43 [2023-04-02 01:07:21,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:07:21,616 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:07:21,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 5 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:07:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-04-02 01:07:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-04-02 01:07:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:07:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2023-04-02 01:07:21,636 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 30 [2023-04-02 01:07:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:07:21,636 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2023-04-02 01:07:21,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:07:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2023-04-02 01:07:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 01:07:21,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:07:21,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:07:21,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 01:07:21,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:07:21,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:07:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2081082794, now seen corresponding path program 1 times [2023-04-02 01:07:21,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:07:21,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558246109] [2023-04-02 01:07:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:07:21,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:07:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:07:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:07:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 01:07:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:07:21,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:07:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558246109] [2023-04-02 01:07:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558246109] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:07:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178713414] [2023-04-02 01:07:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:07:21,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:07:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:07:21,849 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) [2023-04-02 01:07:21,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:07:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:22,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 01:07:22,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:07:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:07:22,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:07:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:07:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178713414] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:07:22,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:07:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2023-04-02 01:07:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707455805] [2023-04-02 01:07:22,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:07:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:07:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:07:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:07:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:07:22,287 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 12 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 01:07:22,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:07:22,573 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2023-04-02 01:07:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 01:07:22,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 30 [2023-04-02 01:07:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:07:22,575 INFO L225 Difference]: With dead ends: 73 [2023-04-02 01:07:22,575 INFO L226 Difference]: Without dead ends: 48 [2023-04-02 01:07:22,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-04-02 01:07:22,581 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:07:22,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 13 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:07:22,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-04-02 01:07:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-04-02 01:07:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:07:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-04-02 01:07:22,594 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 30 [2023-04-02 01:07:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:07:22,594 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-04-02 01:07:22,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 01:07:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-04-02 01:07:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-02 01:07:22,596 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:07:22,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:07:22,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:07:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:07:22,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:07:22,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:07:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2106989956, now seen corresponding path program 1 times [2023-04-02 01:07:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:07:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280905234] [2023-04-02 01:07:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:07:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:07:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:07:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:07:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 01:07:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:07:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 01:07:22,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:07:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280905234] [2023-04-02 01:07:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280905234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:07:22,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:07:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:07:22,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017054099] [2023-04-02 01:07:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:07:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:07:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:07:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:07:22,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:07:22,938 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:07:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:07:23,076 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2023-04-02 01:07:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:07:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-04-02 01:07:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:07:23,077 INFO L225 Difference]: With dead ends: 49 [2023-04-02 01:07:23,077 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:07:23,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:07:23,078 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:07:23,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 7 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:07:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:07:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:07:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 01:07:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:07:23,079 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-04-02 01:07:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:07:23,079 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:07:23,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:07:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:07:23,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:07:23,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:07:23,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 01:07:23,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:07:23,191 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 01:07:23,192 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2023-04-02 01:07:23,192 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 01:07:23,192 INFO L899 garLoopResultBuilder]: For program point dll_destroyEXIT(lines 603 609) no Hoare annotation was computed. [2023-04-02 01:07:23,192 INFO L902 garLoopResultBuilder]: At program point L604-2(lines 604 608) the Hoare annotation is: true [2023-04-02 01:07:23,195 INFO L899 garLoopResultBuilder]: For program point L604-3(lines 603 609) no Hoare annotation was computed. [2023-04-02 01:07:23,195 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 603 609) the Hoare annotation is: (= |old(#valid)| |#valid|) [2023-04-02 01:07:23,195 INFO L902 garLoopResultBuilder]: At program point L573(line 573) the Hoare annotation is: true [2023-04-02 01:07:23,195 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 572 574) the Hoare annotation is: true [2023-04-02 01:07:23,195 INFO L899 garLoopResultBuilder]: For program point myexitEXIT(lines 572 574) no Hoare annotation was computed. [2023-04-02 01:07:23,195 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 74 78) no Hoare annotation was computed. [2023-04-02 01:07:23,195 INFO L899 garLoopResultBuilder]: For program point __bswap_32FINAL(lines 74 78) no Hoare annotation was computed. [2023-04-02 01:07:23,195 INFO L899 garLoopResultBuilder]: For program point __bswap_32EXIT(lines 74 78) no Hoare annotation was computed. [2023-04-02 01:07:23,195 INFO L902 garLoopResultBuilder]: At program point L611-2(lines 611 614) the Hoare annotation is: true [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point L611-3(lines 611 614) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point dll_get_data_atFINAL(lines 610 616) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 610 616) the Hoare annotation is: true [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point dll_get_data_atEXIT(lines 610 616) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point L577(lines 577 579) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point L577-1(lines 577 579) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point node_createFINAL(lines 575 584) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 575 584) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point node_createEXIT(lines 575 584) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point L578(line 578) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L899 garLoopResultBuilder]: For program point dll_update_atEXIT(lines 617 623) no Hoare annotation was computed. [2023-04-02 01:07:23,196 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 617 623) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2023-04-02 01:07:23,196 INFO L895 garLoopResultBuilder]: At program point L618-2(lines 618 621) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2023-04-02 01:07:23,197 INFO L899 garLoopResultBuilder]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2023-04-02 01:07:23,197 INFO L899 garLoopResultBuilder]: For program point dll_update_atFINAL(lines 617 623) no Hoare annotation was computed. [2023-04-02 01:07:23,197 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:07:23,197 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:07:23,197 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:07:23,197 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 624 643) no Hoare annotation was computed. [2023-04-02 01:07:23,197 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 624 643) no Hoare annotation was computed. [2023-04-02 01:07:23,197 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 624 643) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2023-04-02 01:07:23,198 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 641) no Hoare annotation was computed. [2023-04-02 01:07:23,198 INFO L899 garLoopResultBuilder]: For program point L639(line 639) no Hoare annotation was computed. [2023-04-02 01:07:23,198 INFO L895 garLoopResultBuilder]: At program point L635(line 635) the Hoare annotation is: false [2023-04-02 01:07:23,198 INFO L899 garLoopResultBuilder]: For program point L635-1(line 635) no Hoare annotation was computed. [2023-04-02 01:07:23,198 INFO L899 garLoopResultBuilder]: For program point L635-2(lines 635 637) no Hoare annotation was computed. [2023-04-02 01:07:23,198 INFO L895 garLoopResultBuilder]: At program point L631(line 631) the Hoare annotation is: (= main_~len~0 2) [2023-04-02 01:07:23,199 INFO L899 garLoopResultBuilder]: For program point L633-2(lines 633 638) no Hoare annotation was computed. [2023-04-02 01:07:23,199 INFO L899 garLoopResultBuilder]: For program point L631-1(lines 629 632) no Hoare annotation was computed. [2023-04-02 01:07:23,199 INFO L895 garLoopResultBuilder]: At program point L633-3(lines 633 638) the Hoare annotation is: (and (= main_~i~0 1) (= main_~len~0 2)) [2023-04-02 01:07:23,200 INFO L902 garLoopResultBuilder]: At program point L633-4(lines 633 638) the Hoare annotation is: true [2023-04-02 01:07:23,200 INFO L895 garLoopResultBuilder]: At program point L627(line 627) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= main_~len~0 2) (= |old(#valid)| |#valid|)) [2023-04-02 01:07:23,200 INFO L895 garLoopResultBuilder]: At program point L629-2(lines 629 632) the Hoare annotation is: (= main_~len~0 2) [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point L627-1(line 627) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point L629-3(lines 629 632) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 624 643) the Hoare annotation is: false [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 79 83) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point __bswap_64FINAL(lines 79 83) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point __bswap_64EXIT(lines 79 83) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point dll_createFINAL(lines 585 602) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 597) no Hoare annotation was computed. [2023-04-02 01:07:23,200 INFO L899 garLoopResultBuilder]: For program point L595-2(lines 595 597) no Hoare annotation was computed. [2023-04-02 01:07:23,201 INFO L899 garLoopResultBuilder]: For program point L589(lines 589 591) no Hoare annotation was computed. [2023-04-02 01:07:23,201 INFO L899 garLoopResultBuilder]: For program point L589-1(lines 589 591) no Hoare annotation was computed. [2023-04-02 01:07:23,201 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 585 602) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2023-04-02 01:07:23,201 INFO L902 garLoopResultBuilder]: At program point L587-2(lines 587 600) the Hoare annotation is: true [2023-04-02 01:07:23,201 INFO L899 garLoopResultBuilder]: For program point L587-3(lines 587 600) no Hoare annotation was computed. [2023-04-02 01:07:23,201 INFO L899 garLoopResultBuilder]: For program point dll_createEXIT(lines 585 602) no Hoare annotation was computed. [2023-04-02 01:07:23,201 INFO L902 garLoopResultBuilder]: At program point L590(line 590) the Hoare annotation is: true [2023-04-02 01:07:23,201 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:07:23,201 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:07:23,201 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:07:23,202 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:07:23,204 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-02 01:07:23,206 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:07:23,212 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,213 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,213 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,213 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,216 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,217 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,217 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,217 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:07:23 BoogieIcfgContainer [2023-04-02 01:07:23,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:07:23,220 INFO L158 Benchmark]: Toolchain (without parser) took 4277.14ms. Allocated memory is still 259.0MB. Free memory was 210.2MB in the beginning and 219.6MB in the end (delta: -9.3MB). Peak memory consumption was 133.8MB. Max. memory is 8.0GB. [2023-04-02 01:07:23,220 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:07:23,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.82ms. Allocated memory is still 259.0MB. Free memory was 209.7MB in the beginning and 192.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-04-02 01:07:23,220 INFO L158 Benchmark]: Boogie Preprocessor took 46.66ms. Allocated memory is still 259.0MB. Free memory was 192.4MB in the beginning and 189.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-02 01:07:23,221 INFO L158 Benchmark]: RCFGBuilder took 559.93ms. Allocated memory is still 259.0MB. Free memory was 189.8MB in the beginning and 165.1MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-04-02 01:07:23,221 INFO L158 Benchmark]: TraceAbstraction took 3261.79ms. Allocated memory is still 259.0MB. Free memory was 164.1MB in the beginning and 219.6MB in the end (delta: -55.5MB). Peak memory consumption was 87.7MB. Max. memory is 8.0GB. [2023-04-02 01:07:23,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 401.82ms. Allocated memory is still 259.0MB. Free memory was 209.7MB in the beginning and 192.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.66ms. Allocated memory is still 259.0MB. Free memory was 192.4MB in the beginning and 189.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 559.93ms. Allocated memory is still 259.0MB. Free memory was 189.8MB in the beginning and 165.1MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3261.79ms. Allocated memory is still 259.0MB. Free memory was 164.1MB in the beginning and 219.6MB in the end (delta: -55.5MB). Peak memory consumption was 87.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 641]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 17 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 44 PreInvPairs, 56 NumberOfFragments, 106 HoareAnnotationTreeSize, 44 FomulaSimplifications, 240 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 431 SizeOfPredicates, 1 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 8/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 618]: Loop Invariant [2023-04-02 01:07:23,230 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,231 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,231 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,232 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,233 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,233 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2023-04-02 01:07:23,233 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2023-04-02 01:07:23,233 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && #memory_$Pointer$ == \old(#memory_$Pointer$) - InvariantResult [Line: 611]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 604]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 633]: Loop Invariant Derived loop invariant: i == 1 && len == 2 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: len == 2 RESULT: Ultimate proved your program to be correct! [2023-04-02 01:07:23,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...