/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/forester-heap/sll-reverse_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:10:15,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:10:15,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:10:15,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:10:15,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:10:15,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:10:15,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:10:15,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:10:15,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:10:15,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:10:15,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:10:15,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:10:15,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:10:15,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:10:15,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:10:15,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:10:15,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:10:15,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:10:15,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:10:15,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:10:15,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:10:15,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:10:15,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:10:15,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:10:15,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:10:15,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:10:15,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:10:15,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:10:15,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:10:15,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:10:15,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:10:15,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:10:15,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:10:15,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:10:15,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:10:15,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:10:15,493 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 [2023-03-31 00:10:15,514 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:10:15,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:10:15,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:10:15,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:10:15,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:10:15,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:10:15,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:10:15,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:10:15,517 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:10:15,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:10:15,517 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:10:15,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:10:15,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:10:15,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:10:15,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:10:15,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:10:15,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:10:15,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:10:15,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:10:15,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:10:15,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:10:15,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:10:15,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:10:15,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:10:15,520 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:10:15,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:10:15,520 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:10:15,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:10:15,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:10:15,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:10:15,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:10:15,725 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:10:15,725 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:10:15,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2023-03-31 00:10:16,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:10:16,957 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:10:16,958 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-reverse_simple.i [2023-03-31 00:10:16,967 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0adfbc2cd/a50fd5bab1ac41e996999e57027ee9b4/FLAG7e7793016 [2023-03-31 00:10:16,977 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0adfbc2cd/a50fd5bab1ac41e996999e57027ee9b4 [2023-03-31 00:10:16,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:10:16,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:10:16,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:10:16,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:10:16,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:10:16,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:10:16" (1/1) ... [2023-03-31 00:10:16,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50cbd412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:16, skipping insertion in model container [2023-03-31 00:10:16,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:10:16" (1/1) ... [2023-03-31 00:10:16,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:10:17,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:10:17,171 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/forester-heap/sll-reverse_simple.i[22251,22264] [2023-03-31 00:10:17,174 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/forester-heap/sll-reverse_simple.i[22336,22349] [2023-03-31 00:10:17,177 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/forester-heap/sll-reverse_simple.i[22829,22842] [2023-03-31 00:10:17,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:10:17,185 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:10:17,226 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/forester-heap/sll-reverse_simple.i[22251,22264] [2023-03-31 00:10:17,228 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/forester-heap/sll-reverse_simple.i[22336,22349] [2023-03-31 00:10:17,236 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/forester-heap/sll-reverse_simple.i[22829,22842] [2023-03-31 00:10:17,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:10:17,258 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:10:17,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17 WrapperNode [2023-03-31 00:10:17,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:10:17,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:10:17,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:10:17,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:10:17,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:10:17,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:10:17,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:10:17,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:10:17,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (1/1) ... [2023-03-31 00:10:17,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:10:17,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:17,353 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) [2023-03-31 00:10:17,365 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 [2023-03-31 00:10:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:10:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:10:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:10:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:10:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 00:10:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 00:10:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 00:10:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 00:10:17,399 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 00:10:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 00:10:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 00:10:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 00:10:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 00:10:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 00:10:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 00:10:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 00:10:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 00:10:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 00:10:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 00:10:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:10:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:10:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:10:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:10:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:10:17,572 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:10:17,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:10:17,759 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:10:17,763 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:10:17,763 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-03-31 00:10:17,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:10:17 BoogieIcfgContainer [2023-03-31 00:10:17,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:10:17,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:10:17,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:10:17,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:10:17,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:10:16" (1/3) ... [2023-03-31 00:10:17,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd045dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:10:17, skipping insertion in model container [2023-03-31 00:10:17,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:17" (2/3) ... [2023-03-31 00:10:17,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd045dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:10:17, skipping insertion in model container [2023-03-31 00:10:17,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:10:17" (3/3) ... [2023-03-31 00:10:17,769 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2023-03-31 00:10:17,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:10:17,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-03-31 00:10:17,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:10:17,810 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;@e2744a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:10:17,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-03-31 00:10:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 37 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:10:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 00:10:17,817 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:17,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:17,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:17,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2001774932, now seen corresponding path program 1 times [2023-03-31 00:10:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:17,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028929868] [2023-03-31 00:10:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:17,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028929868] [2023-03-31 00:10:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028929868] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 00:10:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392175017] [2023-03-31 00:10:17,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:17,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 00:10:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 00:10:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:10:18,032 INFO L87 Difference]: Start difference. First operand has 42 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 37 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:18,135 INFO L93 Difference]: Finished difference Result 76 states and 118 transitions. [2023-03-31 00:10:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 00:10:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 00:10:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:18,145 INFO L225 Difference]: With dead ends: 76 [2023-03-31 00:10:18,145 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 00:10:18,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:10:18,152 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:18,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 10 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 00:10:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-03-31 00:10:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 31 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-03-31 00:10:18,188 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 11 [2023-03-31 00:10:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:18,189 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-03-31 00:10:18,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-03-31 00:10:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 00:10:18,190 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:18,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:10:18,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:18,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2110888692, now seen corresponding path program 1 times [2023-03-31 00:10:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797322838] [2023-03-31 00:10:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:18,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:18,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797322838] [2023-03-31 00:10:18,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797322838] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:18,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:18,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 00:10:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978012324] [2023-03-31 00:10:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:18,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:10:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:10:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:10:18,298 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:18,414 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-03-31 00:10:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:10:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 00:10:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:18,417 INFO L225 Difference]: With dead ends: 61 [2023-03-31 00:10:18,417 INFO L226 Difference]: Without dead ends: 47 [2023-03-31 00:10:18,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:10:18,419 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 99 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:18,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 17 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-03-31 00:10:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2023-03-31 00:10:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 37 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-03-31 00:10:18,426 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 14 [2023-03-31 00:10:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:18,426 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-03-31 00:10:18,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-03-31 00:10:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 00:10:18,427 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:18,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:18,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:10:18,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:18,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -893947104, now seen corresponding path program 1 times [2023-03-31 00:10:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405944482] [2023-03-31 00:10:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405944482] [2023-03-31 00:10:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405944482] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:18,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:10:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014145236] [2023-03-31 00:10:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:18,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:10:18,582 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:18,729 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2023-03-31 00:10:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:10:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-03-31 00:10:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:18,730 INFO L225 Difference]: With dead ends: 84 [2023-03-31 00:10:18,730 INFO L226 Difference]: Without dead ends: 54 [2023-03-31 00:10:18,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-03-31 00:10:18,731 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:18,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 22 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-03-31 00:10:18,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2023-03-31 00:10:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 44 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2023-03-31 00:10:18,737 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 20 [2023-03-31 00:10:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:18,737 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2023-03-31 00:10:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-03-31 00:10:18,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-03-31 00:10:18,738 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:18,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:10:18,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:18,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash 804296743, now seen corresponding path program 1 times [2023-03-31 00:10:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182727241] [2023-03-31 00:10:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 00:10:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182727241] [2023-03-31 00:10:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182727241] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597953232] [2023-03-31 00:10:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:18,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:18,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:18,912 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) [2023-03-31 00:10:18,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:10:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:19,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-03-31 00:10:19,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:19,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-03-31 00:10:19,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-03-31 00:10:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 00:10:19,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 00:10:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597953232] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:10:19,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:10:19,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2023-03-31 00:10:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649263250] [2023-03-31 00:10:19,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:10:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:10:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:10:19,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:10:19,230 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:19,391 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2023-03-31 00:10:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 00:10:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-03-31 00:10:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:19,393 INFO L225 Difference]: With dead ends: 54 [2023-03-31 00:10:19,393 INFO L226 Difference]: Without dead ends: 50 [2023-03-31 00:10:19,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-03-31 00:10:19,396 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:19,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 17 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-03-31 00:10:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2023-03-31 00:10:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-03-31 00:10:19,410 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 22 [2023-03-31 00:10:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:19,411 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-03-31 00:10:19,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-03-31 00:10:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:10:19,411 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:19,412 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] [2023-03-31 00:10:19,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 00:10:19,618 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 [2023-03-31 00:10:19,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:19,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -417459857, now seen corresponding path program 1 times [2023-03-31 00:10:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:19,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997415207] [2023-03-31 00:10:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 00:10:19,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997415207] [2023-03-31 00:10:19,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997415207] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:19,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:19,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:10:19,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675538773] [2023-03-31 00:10:19,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:19,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:10:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:10:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:10:19,653 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:19,707 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2023-03-31 00:10:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 00:10:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-03-31 00:10:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:19,707 INFO L225 Difference]: With dead ends: 46 [2023-03-31 00:10:19,708 INFO L226 Difference]: Without dead ends: 44 [2023-03-31 00:10:19,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:10:19,708 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:19,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 12 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 00:10:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-03-31 00:10:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2023-03-31 00:10:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-03-31 00:10:19,712 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 24 [2023-03-31 00:10:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:19,713 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-03-31 00:10:19,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-03-31 00:10:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:10:19,713 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:19,713 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] [2023-03-31 00:10:19,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 00:10:19,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:19,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash -417461779, now seen corresponding path program 1 times [2023-03-31 00:10:19,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:19,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789511827] [2023-03-31 00:10:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:19,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:19,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789511827] [2023-03-31 00:10:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789511827] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395041024] [2023-03-31 00:10:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:19,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:19,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:19,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:19,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:10:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:20,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2023-03-31 00:10:20,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:20,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:20,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 00:10:20,158 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:10:20,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-03-31 00:10:20,167 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:10:20,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-03-31 00:10:20,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-03-31 00:10:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:20,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:20,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:20,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-03-31 00:10:20,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:20,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2023-03-31 00:10:20,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-03-31 00:10:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:20,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395041024] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:10:20,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:10:20,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-03-31 00:10:20,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829668857] [2023-03-31 00:10:20,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:10:20,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 00:10:20,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 00:10:20,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-03-31 00:10:20,435 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:20,793 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2023-03-31 00:10:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 00:10:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-03-31 00:10:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:20,795 INFO L225 Difference]: With dead ends: 85 [2023-03-31 00:10:20,795 INFO L226 Difference]: Without dead ends: 74 [2023-03-31 00:10:20,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2023-03-31 00:10:20,795 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 279 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:20,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 30 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:10:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-03-31 00:10:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 54. [2023-03-31 00:10:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-03-31 00:10:20,802 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 24 [2023-03-31 00:10:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:20,802 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-03-31 00:10:20,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:20,803 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-03-31 00:10:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:10:20,803 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:20,803 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] [2023-03-31 00:10:20,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 00:10:21,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-31 00:10:21,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:21,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:21,009 INFO L85 PathProgramCache]: Analyzing trace with hash 262596591, now seen corresponding path program 1 times [2023-03-31 00:10:21,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:21,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296021305] [2023-03-31 00:10:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:21,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 00:10:21,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:21,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296021305] [2023-03-31 00:10:21,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296021305] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:21,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:21,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:10:21,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30505654] [2023-03-31 00:10:21,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:21,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:21,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:10:21,250 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:21,359 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2023-03-31 00:10:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:10:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-03-31 00:10:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:21,361 INFO L225 Difference]: With dead ends: 70 [2023-03-31 00:10:21,362 INFO L226 Difference]: Without dead ends: 56 [2023-03-31 00:10:21,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:10:21,362 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:21,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 22 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-03-31 00:10:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-03-31 00:10:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.24) internal successors, (62), 50 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-03-31 00:10:21,377 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 24 [2023-03-31 00:10:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:21,377 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-03-31 00:10:21,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-03-31 00:10:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-03-31 00:10:21,382 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:21,383 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:21,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 00:10:21,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:21,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1538410534, now seen corresponding path program 2 times [2023-03-31 00:10:21,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:21,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327619931] [2023-03-31 00:10:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:21,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:21,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327619931] [2023-03-31 00:10:21,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327619931] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:21,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596688577] [2023-03-31 00:10:21,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-31 00:10:21,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:21,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:21,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:21,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:10:21,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-31 00:10:21,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:10:21,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 67 conjunts are in the unsatisfiable core [2023-03-31 00:10:21,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:21,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:22,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:10:22,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-03-31 00:10:22,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 00:10:22,120 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:10:22,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-03-31 00:10:22,129 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-03-31 00:10:22,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-03-31 00:10:22,138 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:10:22,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-03-31 00:10:22,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-03-31 00:10:22,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-03-31 00:10:22,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:10:22,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:10:22,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-03-31 00:10:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:22,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:22,307 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:22,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2023-03-31 00:10:22,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:22,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 58 [2023-03-31 00:10:22,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2023-03-31 00:10:22,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:22,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2023-03-31 00:10:22,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:22,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-03-31 00:10:22,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:10:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596688577] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:10:22,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:10:22,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2023-03-31 00:10:22,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975130604] [2023-03-31 00:10:22,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:10:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-03-31 00:10:22,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-03-31 00:10:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2023-03-31 00:10:22,605 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:23,115 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2023-03-31 00:10:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-31 00:10:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-03-31 00:10:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:23,116 INFO L225 Difference]: With dead ends: 89 [2023-03-31 00:10:23,116 INFO L226 Difference]: Without dead ends: 87 [2023-03-31 00:10:23,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2023-03-31 00:10:23,117 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 142 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:23,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 72 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:10:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-03-31 00:10:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 61. [2023-03-31 00:10:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 57 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2023-03-31 00:10:23,142 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 25 [2023-03-31 00:10:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:23,142 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2023-03-31 00:10:23,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 22 states have internal predecessors, (52), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2023-03-31 00:10:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 00:10:23,143 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:23,143 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:23,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 00:10:23,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:23,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:10:23,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2040910093, now seen corresponding path program 3 times [2023-03-31 00:10:23,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:23,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384918433] [2023-03-31 00:10:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:23,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384918433] [2023-03-31 00:10:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384918433] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672564631] [2023-03-31 00:10:23,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 00:10:23,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:23,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:23,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:23,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 00:10:23,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 00:10:23,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:10:23,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 71 conjunts are in the unsatisfiable core [2023-03-31 00:10:23,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:23,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:24,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:24,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:24,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-03-31 00:10:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:24,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:24,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2023-03-31 00:10:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:24,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-03-31 00:10:24,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:24,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-03-31 00:10:24,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2023-03-31 00:10:24,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2023-03-31 00:10:24,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:10:24,062 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:10:24,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-03-31 00:10:24,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:10:24,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-03-31 00:10:24,126 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-03-31 00:10:24,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 35 [2023-03-31 00:10:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:24,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:24,314 INFO L321 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2023-03-31 00:10:24,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 387 treesize of output 362 [2023-03-31 00:10:24,398 INFO L321 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2023-03-31 00:10:24,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 621 treesize of output 506 [2023-03-31 00:10:24,535 INFO L321 Elim1Store]: treesize reduction 42, result has 77.3 percent of original size [2023-03-31 00:10:24,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1400 treesize of output 1420 [2023-03-31 00:10:24,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:24,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 961 treesize of output 847 [2023-03-31 00:10:24,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:24,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 2423 treesize of output 2373 [2023-03-31 00:10:24,971 INFO L321 Elim1Store]: treesize reduction 8, result has 92.9 percent of original size [2023-03-31 00:10:24,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1233 treesize of output 1213 [2023-03-31 00:10:25,117 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:25,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1485 treesize of output 1479 [2023-03-31 00:10:25,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:25,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 961 treesize of output 1034