/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/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 00:53:39,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 00:53:39,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 00:53:39,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 00:53:39,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 00:53:39,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 00:53:39,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 00:53:39,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 00:53:39,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 00:53:39,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 00:53:39,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 00:53:39,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 00:53:39,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 00:53:39,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 00:53:39,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 00:53:39,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 00:53:39,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 00:53:39,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 00:53:39,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 00:53:39,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 00:53:39,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 00:53:39,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 00:53:39,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 00:53:39,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 00:53:39,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 00:53:39,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 00:53:39,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 00:53:39,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 00:53:39,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 00:53:39,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 00:53:39,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 00:53:39,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 00:53:39,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 00:53:39,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 00:53:39,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 00:53:39,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 00:53:39,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 00:53:39,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 00:53:39,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 00:53:39,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 00:53:39,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 00:53:39,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 00:53:39,531 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 00:53:39,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 00:53:39,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 00:53:39,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 00:53:39,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 00:53:39,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 00:53:39,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 00:53:39,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 00:53:39,532 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 00:53:39,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 00:53:39,532 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 00:53:39,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 00:53:39,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 00:53:39,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 00:53:39,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 00:53:39,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 00:53:39,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:53:39,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 00:53:39,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 00:53:39,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 00:53:39,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 00:53:39,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 00:53:39,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 00:53:39,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 00:53:39,537 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 00:53:39,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 00:53:39,538 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 00:53:39,538 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 00:53:39,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 00:53:39,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 00:53:39,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 00:53:39,720 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 00:53:39,721 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 00:53:39,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-04-02 00:53:40,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 00:53:40,955 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 00:53:40,955 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-04-02 00:53:40,963 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bea1d6f8/f2448d8d56bc43a29d92998c7b68761d/FLAG04256e822 [2023-04-02 00:53:40,978 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bea1d6f8/f2448d8d56bc43a29d92998c7b68761d [2023-04-02 00:53:40,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 00:53:40,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 00:53:40,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 00:53:40,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 00:53:40,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 00:53:40,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:53:40" (1/1) ... [2023-04-02 00:53:40,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b1a428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:40, skipping insertion in model container [2023-04-02 00:53:40,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 12:53:40" (1/1) ... [2023-04-02 00:53:40,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 00:53:41,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 00:53:41,190 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/dll-rb-sentinel-1.i[22665,22678] [2023-04-02 00:53:41,195 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/dll-rb-sentinel-1.i[22735,22748] [2023-04-02 00:53:41,196 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/dll-rb-sentinel-1.i[22799,22812] [2023-04-02 00:53:41,197 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/dll-rb-sentinel-1.i[22894,22907] [2023-04-02 00:53:41,198 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/dll-rb-sentinel-1.i[22966,22979] [2023-04-02 00:53:41,199 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/dll-rb-sentinel-1.i[23105,23118] [2023-04-02 00:53:41,199 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/dll-rb-sentinel-1.i[23179,23192] [2023-04-02 00:53:41,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:53:41,214 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 00:53:41,256 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/dll-rb-sentinel-1.i[22665,22678] [2023-04-02 00:53:41,257 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/dll-rb-sentinel-1.i[22735,22748] [2023-04-02 00:53:41,257 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/dll-rb-sentinel-1.i[22799,22812] [2023-04-02 00:53:41,258 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/dll-rb-sentinel-1.i[22894,22907] [2023-04-02 00:53:41,259 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/dll-rb-sentinel-1.i[22966,22979] [2023-04-02 00:53:41,262 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/dll-rb-sentinel-1.i[23105,23118] [2023-04-02 00:53:41,263 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/dll-rb-sentinel-1.i[23179,23192] [2023-04-02 00:53:41,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 00:53:41,295 INFO L208 MainTranslator]: Completed translation [2023-04-02 00:53:41,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41 WrapperNode [2023-04-02 00:53:41,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 00:53:41,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 00:53:41,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 00:53:41,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 00:53:41,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 00:53:41,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 00:53:41,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 00:53:41,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 00:53:41,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (1/1) ... [2023-04-02 00:53:41,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 00:53:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:53:41,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 00:53:41,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 00:53:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 00:53:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 00:53:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 00:53:41,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 00:53:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 00:53:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 00:53:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 00:53:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 00:53:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 00:53:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 00:53:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 00:53:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 00:53:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 00:53:41,567 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 00:53:41,568 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 00:53:41,784 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 00:53:41,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 00:53:41,789 INFO L302 CfgBuilder]: Removed 17 assume(true) statements. [2023-04-02 00:53:41,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:53:41 BoogieIcfgContainer [2023-04-02 00:53:41,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 00:53:41,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 00:53:41,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 00:53:41,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 00:53:41,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 12:53:40" (1/3) ... [2023-04-02 00:53:41,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67123180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:53:41, skipping insertion in model container [2023-04-02 00:53:41,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 12:53:41" (2/3) ... [2023-04-02 00:53:41,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67123180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 12:53:41, skipping insertion in model container [2023-04-02 00:53:41,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 12:53:41" (3/3) ... [2023-04-02 00:53:41,795 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2023-04-02 00:53:41,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 00:53:41,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 00:53:41,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 00:53:41,873 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;@2f4f27b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 00:53:41,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 00:53:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.925) internal successors, (77), 47 states have internal predecessors, (77), 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) [2023-04-02 00:53:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 00:53:41,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:41,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:41,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:41,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash -959263352, now seen corresponding path program 1 times [2023-04-02 00:53:41,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:41,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541002060] [2023-04-02 00:53:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:41,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:42,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:42,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541002060] [2023-04-02 00:53:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541002060] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:42,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:42,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 00:53:42,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650647025] [2023-04-02 00:53:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 00:53:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 00:53:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 00:53:42,081 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.925) internal successors, (77), 47 states have internal predecessors, (77), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-04-02 00:53:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:42,172 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2023-04-02 00:53:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 00:53:42,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2023-04-02 00:53:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:42,179 INFO L225 Difference]: With dead ends: 98 [2023-04-02 00:53:42,179 INFO L226 Difference]: Without dead ends: 45 [2023-04-02 00:53:42,181 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 [2023-04-02 00:53:42,185 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:42,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 10 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:53:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-02 00:53:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-04-02 00:53:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 41 states have internal predecessors, (45), 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) [2023-04-02 00:53:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2023-04-02 00:53:42,217 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2023-04-02 00:53:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:42,217 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2023-04-02 00:53:42,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-04-02 00:53:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2023-04-02 00:53:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 00:53:42,220 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:42,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:42,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 00:53:42,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:42,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash 264712651, now seen corresponding path program 1 times [2023-04-02 00:53:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:42,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780968555] [2023-04-02 00:53:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:42,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:42,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780968555] [2023-04-02 00:53:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780968555] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:42,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:42,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 00:53:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12082828] [2023-04-02 00:53:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:42,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:53:42,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:53:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:53:42,396 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2023-04-02 00:53:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:42,536 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-04-02 00:53:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:53:42,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 [2023-04-02 00:53:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:42,537 INFO L225 Difference]: With dead ends: 51 [2023-04-02 00:53:42,537 INFO L226 Difference]: Without dead ends: 49 [2023-04-02 00:53:42,538 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 [2023-04-02 00:53:42,538 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 104 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 17 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:53:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-02 00:53:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2023-04-02 00:53:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 39 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) [2023-04-02 00:53:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2023-04-02 00:53:42,544 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 11 [2023-04-02 00:53:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:42,544 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2023-04-02 00:53:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2023-04-02 00:53:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2023-04-02 00:53:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 00:53:42,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:42,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:42,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 00:53:42,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:42,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash -383842255, now seen corresponding path program 1 times [2023-04-02 00:53:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356863341] [2023-04-02 00:53:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356863341] [2023-04-02 00:53:42,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356863341] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:42,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:42,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 00:53:42,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513624554] [2023-04-02 00:53:42,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:42,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:53:42,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:42,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:53:42,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:53:42,680 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-04-02 00:53:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:42,851 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2023-04-02 00:53:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:53:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2023-04-02 00:53:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:42,853 INFO L225 Difference]: With dead ends: 43 [2023-04-02 00:53:42,853 INFO L226 Difference]: Without dead ends: 41 [2023-04-02 00:53:42,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:53:42,855 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:42,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 16 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:53:42,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-02 00:53:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-04-02 00:53:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 37 states have internal predecessors, (41), 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) [2023-04-02 00:53:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-04-02 00:53:42,871 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2023-04-02 00:53:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:42,871 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-04-02 00:53:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-04-02 00:53:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-04-02 00:53:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 00:53:42,872 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:42,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:42,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 00:53:42,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:42,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash 498635482, now seen corresponding path program 1 times [2023-04-02 00:53:42,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688704780] [2023-04-02 00:53:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:42,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:43,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688704780] [2023-04-02 00:53:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688704780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:43,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:53:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470795983] [2023-04-02 00:53:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:43,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:53:43,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:53:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:53:43,071 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2023-04-02 00:53:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:43,288 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2023-04-02 00:53:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:53:43,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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 [2023-04-02 00:53:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:43,289 INFO L225 Difference]: With dead ends: 66 [2023-04-02 00:53:43,289 INFO L226 Difference]: Without dead ends: 64 [2023-04-02 00:53:43,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-02 00:53:43,294 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 109 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:43,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 20 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:53:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-04-02 00:53:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2023-04-02 00:53:43,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 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) [2023-04-02 00:53:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2023-04-02 00:53:43,300 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2023-04-02 00:53:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:43,300 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2023-04-02 00:53:43,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 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) [2023-04-02 00:53:43,300 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2023-04-02 00:53:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 00:53:43,301 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:43,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:43,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 00:53:43,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:43,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1837728357, now seen corresponding path program 1 times [2023-04-02 00:53:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612569438] [2023-04-02 00:53:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:43,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:43,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612569438] [2023-04-02 00:53:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612569438] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:43,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:43,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 00:53:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394525898] [2023-04-02 00:53:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:53:43,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:53:43,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:53:43,537 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-04-02 00:53:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:43,681 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2023-04-02 00:53:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 00:53:43,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2023-04-02 00:53:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:43,683 INFO L225 Difference]: With dead ends: 48 [2023-04-02 00:53:43,683 INFO L226 Difference]: Without dead ends: 46 [2023-04-02 00:53:43,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 00:53:43,684 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:43,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 17 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:53:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-04-02 00:53:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-04-02 00:53:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.205128205128205) internal successors, (47), 42 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) [2023-04-02 00:53:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-04-02 00:53:43,693 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2023-04-02 00:53:43,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:43,694 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-04-02 00:53:43,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-04-02 00:53:43,694 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-04-02 00:53:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-02 00:53:43,695 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:43,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:43,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 00:53:43,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:43,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -825264417, now seen corresponding path program 1 times [2023-04-02 00:53:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:43,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463020291] [2023-04-02 00:53:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:43,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:44,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463020291] [2023-04-02 00:53:44,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463020291] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:44,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 00:53:44,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202724222] [2023-04-02 00:53:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:44,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 00:53:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 00:53:44,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 00:53:44,106 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-04-02 00:53:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:44,204 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2023-04-02 00:53:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 00:53:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 17 [2023-04-02 00:53:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:44,206 INFO L225 Difference]: With dead ends: 46 [2023-04-02 00:53:44,206 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 00:53:44,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:53:44,208 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:44,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 00:53:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 00:53:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-04-02 00:53:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 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) [2023-04-02 00:53:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-04-02 00:53:44,226 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2023-04-02 00:53:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:44,226 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-04-02 00:53:44,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-04-02 00:53:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-04-02 00:53:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 00:53:44,228 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:44,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 00:53:44,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:44,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1634674495, now seen corresponding path program 1 times [2023-04-02 00:53:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354868478] [2023-04-02 00:53:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:44,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:44,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354868478] [2023-04-02 00:53:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354868478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 00:53:44,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 00:53:44,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 00:53:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410097948] [2023-04-02 00:53:44,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 00:53:44,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 00:53:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 00:53:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 00:53:44,282 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-04-02 00:53:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:44,501 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2023-04-02 00:53:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 00:53:44,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 18 [2023-04-02 00:53:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:44,502 INFO L225 Difference]: With dead ends: 59 [2023-04-02 00:53:44,502 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 00:53:44,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:53:44,505 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 50 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:44,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 20 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:53:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 00:53:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-04-02 00:53:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.175) internal successors, (47), 42 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) [2023-04-02 00:53:44,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-04-02 00:53:44,514 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2023-04-02 00:53:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:44,515 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-04-02 00:53:44,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-04-02 00:53:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-04-02 00:53:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 00:53:44,515 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:44,515 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] [2023-04-02 00:53:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 00:53:44,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:44,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1129540665, now seen corresponding path program 1 times [2023-04-02 00:53:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266592296] [2023-04-02 00:53:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:44,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266592296] [2023-04-02 00:53:44,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266592296] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:53:44,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276847451] [2023-04-02 00:53:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:53:44,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:53:44,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 00:53:44,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 00:53:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:44,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 00:53:44,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:53:44,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-04-02 00:53:44,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-04-02 00:53:45,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 22 treesize of output 10 [2023-04-02 00:53:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:45,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:53:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276847451] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:53:45,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:53:45,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-04-02 00:53:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221916728] [2023-04-02 00:53:45,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:53:45,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 00:53:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 00:53:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-02 00:53:45,161 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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) [2023-04-02 00:53:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:45,447 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-04-02 00:53:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 00:53:45,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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 21 [2023-04-02 00:53:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:45,448 INFO L225 Difference]: With dead ends: 63 [2023-04-02 00:53:45,448 INFO L226 Difference]: Without dead ends: 41 [2023-04-02 00:53:45,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-02 00:53:45,449 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 80 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:45,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 27 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 00:53:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-02 00:53:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-04-02 00:53:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 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) [2023-04-02 00:53:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-04-02 00:53:45,455 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 21 [2023-04-02 00:53:45,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:45,455 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-04-02 00:53:45,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 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) [2023-04-02 00:53:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-04-02 00:53:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-02 00:53:45,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:45,456 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] [2023-04-02 00:53:45,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 00:53:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:53:45,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:45,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -463445577, now seen corresponding path program 1 times [2023-04-02 00:53:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:45,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900446159] [2023-04-02 00:53:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:45,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900446159] [2023-04-02 00:53:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900446159] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:53:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145168466] [2023-04-02 00:53:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:46,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:53:46,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:53:46,182 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) [2023-04-02 00:53:46,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 00:53:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:46,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 00:53:46,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:53:46,393 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 [2023-04-02 00:53:46,407 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-04-02 00:53:46,407 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-04-02 00:53:46,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:46,464 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 25 treesize of output 27 [2023-04-02 00:53:46,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:46,476 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 00:53:46,477 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 17 treesize of output 16 [2023-04-02 00:53:46,481 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 18 treesize of output 18 [2023-04-02 00:53:46,487 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 40 treesize of output 24 [2023-04-02 00:53:46,490 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 18 treesize of output 16 [2023-04-02 00:53:46,497 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-02 00:53:46,497 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 11 treesize of output 11 [2023-04-02 00:53:46,518 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 14 treesize of output 16 [2023-04-02 00:53:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:46,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:53:46,614 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_676 (Array Int Int))) (= (select (select (store |c_#memory_int| c_main_~end~0.base v_ArrVal_676) c_main_~list~0.base) (+ c_main_~list~0.offset 8)) 1)) is different from false [2023-04-02 00:53:46,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:46,628 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 38 treesize of output 39 [2023-04-02 00:53:46,636 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 81 treesize of output 61 [2023-04-02 00:53:46,640 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 29 treesize of output 27 [2023-04-02 00:53:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145168466] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:53:46,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:53:46,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2023-04-02 00:53:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271800516] [2023-04-02 00:53:46,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:53:46,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 00:53:46,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 00:53:46,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=166, Unknown=1, NotChecked=26, Total=240 [2023-04-02 00:53:46,792 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 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) [2023-04-02 00:53:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:47,949 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-04-02 00:53:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 00:53:47,949 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 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 [2023-04-02 00:53:47,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:47,950 INFO L225 Difference]: With dead ends: 53 [2023-04-02 00:53:47,950 INFO L226 Difference]: Without dead ends: 51 [2023-04-02 00:53:47,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=336, Unknown=1, NotChecked=40, Total=506 [2023-04-02 00:53:47,951 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 174 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:47,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 36 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 316 Invalid, 0 Unknown, 48 Unchecked, 0.9s Time] [2023-04-02 00:53:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-02 00:53:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2023-04-02 00:53:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 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) [2023-04-02 00:53:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-04-02 00:53:47,956 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 25 [2023-04-02 00:53:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:47,956 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-04-02 00:53:47,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 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) [2023-04-02 00:53:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-04-02 00:53:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 00:53:47,957 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:47,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:47,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 00:53:48,158 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,SelfDestructingSolverStorable8 [2023-04-02 00:53:48,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:48,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1537524298, now seen corresponding path program 1 times [2023-04-02 00:53:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156894429] [2023-04-02 00:53:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:48,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:48,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:48,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156894429] [2023-04-02 00:53:48,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156894429] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:53:48,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373440191] [2023-04-02 00:53:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:48,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:53:48,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:53:49,005 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) [2023-04-02 00:53:49,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 00:53:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:49,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-02 00:53:49,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:53:49,242 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-04-02 00:53:49,242 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-04-02 00:53:49,279 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 36 treesize of output 27 [2023-04-02 00:53:49,283 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 36 treesize of output 27 [2023-04-02 00:53:49,296 INFO L321 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2023-04-02 00:53:49,297 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 2 case distinctions, treesize of input 80 treesize of output 70 [2023-04-02 00:53:49,334 INFO L321 Elim1Store]: treesize reduction 45, result has 43.0 percent of original size [2023-04-02 00:53:49,335 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 2 case distinctions, treesize of input 51 treesize of output 72 [2023-04-02 00:53:49,341 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 5 treesize of output 3 [2023-04-02 00:53:49,344 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 5 treesize of output 3 [2023-04-02 00:53:49,351 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 5 treesize of output 3 [2023-04-02 00:53:49,359 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 5 treesize of output 3 [2023-04-02 00:53:49,365 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-04-02 00:53:49,365 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 [2023-04-02 00:53:49,386 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 00:53:49,386 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 50 treesize of output 47 [2023-04-02 00:53:49,389 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 [2023-04-02 00:53:49,394 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 21 treesize of output 13 [2023-04-02 00:53:49,571 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 29 treesize of output 17 [2023-04-02 00:53:49,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-04-02 00:53:49,602 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 00:53:49,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:49,603 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 17 treesize of output 10 [2023-04-02 00:53:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:49,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:53:49,704 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 46 treesize of output 26 [2023-04-02 00:53:49,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:49,755 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 103 treesize of output 96 [2023-04-02 00:53:49,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:49,760 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 87 treesize of output 64 [2023-04-02 00:53:49,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:49,768 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 315 treesize of output 230 [2023-04-02 00:53:49,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:49,785 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 328 treesize of output 295 [2023-04-02 00:53:49,798 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 181 treesize of output 175 [2023-04-02 00:53:49,803 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 175 treesize of output 173 [2023-04-02 00:53:49,807 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 173 treesize of output 165 [2023-04-02 00:53:49,812 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 165 treesize of output 145 [2023-04-02 00:53:49,817 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 145 treesize of output 143 [2023-04-02 00:53:49,824 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 143 treesize of output 137 [2023-04-02 00:53:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:49,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373440191] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 00:53:49,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 00:53:49,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 24 [2023-04-02 00:53:49,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133410755] [2023-04-02 00:53:49,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 00:53:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 00:53:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 00:53:49,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 00:53:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=475, Unknown=8, NotChecked=0, Total=552 [2023-04-02 00:53:49,920 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 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) [2023-04-02 00:53:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 00:53:50,892 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2023-04-02 00:53:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 00:53:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 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 32 [2023-04-02 00:53:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 00:53:50,893 INFO L225 Difference]: With dead ends: 97 [2023-04-02 00:53:50,893 INFO L226 Difference]: Without dead ends: 85 [2023-04-02 00:53:50,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=1026, Unknown=8, NotChecked=0, Total=1260 [2023-04-02 00:53:50,894 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 142 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 00:53:50,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 66 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 00:53:50,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-04-02 00:53:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 59. [2023-04-02 00:53:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 55 states have internal predecessors, (61), 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) [2023-04-02 00:53:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2023-04-02 00:53:50,902 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 32 [2023-04-02 00:53:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 00:53:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2023-04-02 00:53:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 23 states have internal predecessors, (77), 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) [2023-04-02 00:53:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2023-04-02 00:53:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 00:53:50,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 00:53:50,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 00:53:50,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 00:53:51,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:53:51,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 00:53:51,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 00:53:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1403510792, now seen corresponding path program 1 times [2023-04-02 00:53:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 00:53:51,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340008706] [2023-04-02 00:53:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 00:53:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 00:53:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 00:53:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340008706] [2023-04-02 00:53:52,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340008706] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 00:53:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408083024] [2023-04-02 00:53:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 00:53:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 00:53:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 00:53:52,362 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) [2023-04-02 00:53:52,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 00:53:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 00:53:52,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 84 conjunts are in the unsatisfiable core [2023-04-02 00:53:52,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 00:53:52,546 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-04-02 00:53:52,546 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-04-02 00:53:52,587 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 36 treesize of output 27 [2023-04-02 00:53:52,591 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 36 treesize of output 27 [2023-04-02 00:53:52,604 INFO L321 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2023-04-02 00:53:52,604 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 2 case distinctions, treesize of input 90 treesize of output 78 [2023-04-02 00:53:52,615 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-04-02 00:53:52,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-04-02 00:53:52,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,636 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-04-02 00:53:52,636 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 2 case distinctions, treesize of input 28 treesize of output 42 [2023-04-02 00:53:52,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,716 INFO L321 Elim1Store]: treesize reduction 82, result has 14.6 percent of original size [2023-04-02 00:53:52,716 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 3 case distinctions, treesize of input 106 treesize of output 96 [2023-04-02 00:53:52,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:52,729 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 00:53:52,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-04-02 00:53:52,735 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 26 treesize of output 24 [2023-04-02 00:53:52,740 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 12 treesize of output 11 [2023-04-02 00:53:52,752 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2023-04-02 00:53:52,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2023-04-02 00:53:52,759 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 12 treesize of output 11 [2023-04-02 00:53:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 00:53:53,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 7 [2023-04-02 00:53:53,057 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-02 00:53:53,057 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2023-04-02 00:53:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 00:53:53,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 00:53:53,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:53,149 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 125 [2023-04-02 00:53:53,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:53,154 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 107 [2023-04-02 00:53:53,348 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:53,348 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 1111 treesize of output 888 [2023-04-02 00:53:53,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:53:53,360 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 879 treesize of output 624 [2023-04-02 00:54:09,436 WARN L223 SmtUtils]: Spent 15.94s on a formula simplification. DAG size of input: 1835 DAG size of output: 736 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-02 00:54:09,438 INFO L321 Elim1Store]: treesize reduction 4903, result has 32.8 percent of original size [2023-04-02 00:54:09,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 34 select indices, 34 select index equivalence classes, 0 disjoint index pairs (out of 561 index pairs), introduced 43 new quantified variables, introduced 561 case distinctions, treesize of input 2410320 treesize of output 1840452 [2023-04-02 00:56:45,967 WARN L223 SmtUtils]: Spent 2.61m on a formula simplification. DAG size of input: 3507 DAG size of output: 2329 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-04-02 00:56:51,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 00:56:51,513 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 4584782 treesize of output 3977225