/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/forester-heap/sll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:10:38,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:10:38,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:10:38,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:10:38,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:10:38,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:10:38,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:10:38,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:10:38,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:10:38,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:10:38,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:10:38,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:10:38,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:10:38,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:10:38,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:10:38,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:10:38,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:10:38,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:10:38,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:10:38,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:10:38,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:10:38,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:10:38,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:10:38,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:10:38,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 00:10:38,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:10:38,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:10:38,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:10:38,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:10:38,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:10:38,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:10:38,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:10:38,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:10:38,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:10:38,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:10:38,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:10:38,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:10:38,362 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:10:38,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:10:38,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:10:38,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:10:38,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:10:38,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:10:38,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:10:38,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:10:38,364 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:10:38,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:10:38,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:10:38,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:10:38,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:10:38,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:10:38,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:10:38,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:10:38,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:10:38,366 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:10:38,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:10:38,367 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:10:38,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:10:38,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:10:38,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:10:38,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:10:38,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:10:38,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:10:38,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:10:38,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:10:38,369 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:10:38,370 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:10:38,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:10:38,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:10:38,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:10:38,646 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:10:38,646 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:10:38,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-2.i [2023-03-31 00:10:40,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:10:40,757 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:10:40,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i [2023-03-31 00:10:40,784 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aac26bc8/c19d6de731244562badfa6be30e10b94/FLAGf2b07c8f2 [2023-03-31 00:10:40,811 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aac26bc8/c19d6de731244562badfa6be30e10b94 [2023-03-31 00:10:40,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:10:40,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:10:40,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:10:40,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:10:40,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:10:40,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:10:40" (1/1) ... [2023-03-31 00:10:40,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a71fa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:40, skipping insertion in model container [2023-03-31 00:10:40,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:10:40" (1/1) ... [2023-03-31 00:10:40,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:10:40,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:10:41,368 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2023-03-31 00:10:41,391 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2023-03-31 00:10:41,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2023-03-31 00:10:41,395 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2023-03-31 00:10:41,396 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2023-03-31 00:10:41,399 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2023-03-31 00:10:41,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:10:41,427 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:10:41,517 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22162,22175] [2023-03-31 00:10:41,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22311,22324] [2023-03-31 00:10:41,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22402,22415] [2023-03-31 00:10:41,520 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22484,22497] [2023-03-31 00:10:41,521 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22562,22575] [2023-03-31 00:10:41,522 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-2.i[22708,22721] [2023-03-31 00:10:41,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:10:41,552 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:10:41,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41 WrapperNode [2023-03-31 00:10:41,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:10:41,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:10:41,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:10:41,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:10:41,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:10:41,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:10:41,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:10:41,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:10:41,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (1/1) ... [2023-03-31 00:10:41,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:10:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:41,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 00:10:41,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 00:10:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:10:41,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:10:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:10:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:10:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 00:10:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 00:10:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 00:10:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 00:10:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 00:10:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 00:10:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 00:10:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 00:10:41,817 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 00:10:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 00:10:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 00:10:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 00:10:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 00:10:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 00:10:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 00:10:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 00:10:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 00:10:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 00:10:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 00:10:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 00:10:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 00:10:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 00:10:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 00:10:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 00:10:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 00:10:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 00:10:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 00:10:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 00:10:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 00:10:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 00:10:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 00:10:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 00:10:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 00:10:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 00:10:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 00:10:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 00:10:41,845 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:10:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 00:10:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 00:10:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 00:10:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 00:10:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 00:10:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 00:10:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 00:10:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 00:10:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 00:10:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 00:10:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 00:10:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 00:10:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 00:10:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 00:10:41,865 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 00:10:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:10:41,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:10:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:10:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:10:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:10:41,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:10:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:10:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 00:10:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 00:10:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:10:41,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 00:10:41,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:10:41,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:10:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:10:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:10:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:10:42,298 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:10:42,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:10:42,653 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:10:42,658 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:10:42,658 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-03-31 00:10:42,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:10:42 BoogieIcfgContainer [2023-03-31 00:10:42,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:10:42,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:10:42,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:10:42,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:10:42,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:10:40" (1/3) ... [2023-03-31 00:10:42,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdacc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:10:42, skipping insertion in model container [2023-03-31 00:10:42,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:10:41" (2/3) ... [2023-03-31 00:10:42,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdacc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:10:42, skipping insertion in model container [2023-03-31 00:10:42,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:10:42" (3/3) ... [2023-03-31 00:10:42,680 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2023-03-31 00:10:42,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:10:42,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-03-31 00:10:42,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:10:42,803 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;@4d836833, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:10:42,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-03-31 00:10:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 44 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:10:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 00:10:42,824 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:42,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:42,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:42,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash 364969828, now seen corresponding path program 1 times [2023-03-31 00:10:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047213435] [2023-03-31 00:10:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:42,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047213435] [2023-03-31 00:10:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047213435] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:43,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:43,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 00:10:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522649932] [2023-03-31 00:10:43,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:43,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 00:10:43,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 00:10:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:10:43,394 INFO L87 Difference]: Start difference. First operand has 49 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 44 states have internal predecessors, (68), 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) [2023-03-31 00:10:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:43,569 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2023-03-31 00:10:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 00:10:43,571 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 [2023-03-31 00:10:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:43,596 INFO L225 Difference]: With dead ends: 92 [2023-03-31 00:10:43,596 INFO L226 Difference]: Without dead ends: 43 [2023-03-31 00:10:43,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:10:43,602 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:43,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 10 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-03-31 00:10:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-03-31 00:10:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 39 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2023-03-31 00:10:43,656 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2023-03-31 00:10:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:43,656 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2023-03-31 00:10:43,656 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) [2023-03-31 00:10:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2023-03-31 00:10:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 00:10:43,657 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:43,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:43,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:10:43,658 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:43,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 364203207, now seen corresponding path program 1 times [2023-03-31 00:10:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:43,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008101378] [2023-03-31 00:10:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:43,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008101378] [2023-03-31 00:10:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008101378] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:10:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907896680] [2023-03-31 00:10:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:10:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:10:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:10:43,885 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2023-03-31 00:10:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:44,022 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2023-03-31 00:10:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 00:10:44,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2023-03-31 00:10:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:44,024 INFO L225 Difference]: With dead ends: 43 [2023-03-31 00:10:44,024 INFO L226 Difference]: Without dead ends: 41 [2023-03-31 00:10:44,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:10:44,026 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:44,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-03-31 00:10:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-03-31 00:10:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 37 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-03-31 00:10:44,053 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2023-03-31 00:10:44,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:44,054 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-03-31 00:10:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2023-03-31 00:10:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-03-31 00:10:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 00:10:44,054 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:44,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:10:44,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:44,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1594645978, now seen corresponding path program 1 times [2023-03-31 00:10:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639356177] [2023-03-31 00:10:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:44,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639356177] [2023-03-31 00:10:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639356177] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 00:10:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690183692] [2023-03-31 00:10:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:10:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:10:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:10:44,299 INFO L87 Difference]: Start difference. First operand 41 states and 43 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) [2023-03-31 00:10:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:44,453 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-03-31 00:10:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:10:44,453 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 [2023-03-31 00:10:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:44,457 INFO L225 Difference]: With dead ends: 67 [2023-03-31 00:10:44,457 INFO L226 Difference]: Without dead ends: 65 [2023-03-31 00:10:44,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:10:44,460 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 139 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:44,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 17 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-03-31 00:10:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2023-03-31 00:10:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2023-03-31 00:10:44,484 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2023-03-31 00:10:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:44,484 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2023-03-31 00:10:44,485 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) [2023-03-31 00:10:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2023-03-31 00:10:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 00:10:44,485 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:44,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:10:44,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:44,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1812212429, now seen corresponding path program 1 times [2023-03-31 00:10:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898915232] [2023-03-31 00:10:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898915232] [2023-03-31 00:10:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898915232] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:44,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:44,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:10:44,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880071633] [2023-03-31 00:10:44,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:44,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:10:44,639 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:44,822 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-03-31 00:10:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:10:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2023-03-31 00:10:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:44,839 INFO L225 Difference]: With dead ends: 39 [2023-03-31 00:10:44,839 INFO L226 Difference]: Without dead ends: 37 [2023-03-31 00:10:44,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:10:44,845 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:44,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 20 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-03-31 00:10:44,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-03-31 00:10:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-03-31 00:10:44,857 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 16 [2023-03-31 00:10:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:44,858 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-03-31 00:10:44,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-03-31 00:10:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 00:10:44,860 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:44,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:44,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:10:44,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:44,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1812174693, now seen corresponding path program 1 times [2023-03-31 00:10:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:44,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573292547] [2023-03-31 00:10:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:44,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573292547] [2023-03-31 00:10:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573292547] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:10:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447474179] [2023-03-31 00:10:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:45,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:10:45,349 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:45,569 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2023-03-31 00:10:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:10:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2023-03-31 00:10:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:45,571 INFO L225 Difference]: With dead ends: 72 [2023-03-31 00:10:45,571 INFO L226 Difference]: Without dead ends: 48 [2023-03-31 00:10:45,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:10:45,574 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:45,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 20 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-03-31 00:10:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-03-31 00:10:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:45,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-03-31 00:10:45,600 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2023-03-31 00:10:45,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:45,600 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-03-31 00:10:45,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-03-31 00:10:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 00:10:45,601 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:45,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 00:10:45,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:45,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:45,602 INFO L85 PathProgramCache]: Analyzing trace with hash -499005925, now seen corresponding path program 1 times [2023-03-31 00:10:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:45,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391636987] [2023-03-31 00:10:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:46,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391636987] [2023-03-31 00:10:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391636987] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 00:10:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457718104] [2023-03-31 00:10:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:10:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:10:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:10:46,327 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:46,534 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2023-03-31 00:10:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:10:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-03-31 00:10:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:46,538 INFO L225 Difference]: With dead ends: 54 [2023-03-31 00:10:46,538 INFO L226 Difference]: Without dead ends: 52 [2023-03-31 00:10:46,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-03-31 00:10:46,539 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:46,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 24 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-03-31 00:10:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-03-31 00:10:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2023-03-31 00:10:46,561 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2023-03-31 00:10:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:46,561 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2023-03-31 00:10:46,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2023-03-31 00:10:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-03-31 00:10:46,562 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:46,562 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:46,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 00:10:46,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:46,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash -834365180, now seen corresponding path program 1 times [2023-03-31 00:10:46,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:46,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479262761] [2023-03-31 00:10:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:46,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:47,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:47,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479262761] [2023-03-31 00:10:47,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479262761] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:47,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589689196] [2023-03-31 00:10:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:47,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:47,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:47,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:10:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:47,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjunts are in the unsatisfiable core [2023-03-31 00:10:47,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:47,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:47,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:10:47,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-03-31 00:10:47,611 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-03-31 00:10:47,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-03-31 00:10:47,656 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:10:47,657 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 17 treesize of output 21 [2023-03-31 00:10:47,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:47,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:47,835 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 17 treesize of output 21 [2023-03-31 00:10:47,852 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-03-31 00:10:47,852 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 16 treesize of output 18 [2023-03-31 00:10:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:47,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:48,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589689196] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:48,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:10:48,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2023-03-31 00:10:48,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966557037] [2023-03-31 00:10:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:48,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-03-31 00:10:48,183 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:48,635 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2023-03-31 00:10:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:10:48,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-03-31 00:10:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:48,636 INFO L225 Difference]: With dead ends: 62 [2023-03-31 00:10:48,636 INFO L226 Difference]: Without dead ends: 60 [2023-03-31 00:10:48,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=160, Unknown=1, NotChecked=0, Total=210 [2023-03-31 00:10:48,637 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:48,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 125 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:10:48,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-03-31 00:10:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-03-31 00:10:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2023-03-31 00:10:48,648 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 20 [2023-03-31 00:10:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:48,648 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2023-03-31 00:10:48,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2023-03-31 00:10:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:10:48,649 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:48,649 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] [2023-03-31 00:10:48,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 00:10:48,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:48,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:48,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1656330756, now seen corresponding path program 1 times [2023-03-31 00:10:48,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:48,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727306415] [2023-03-31 00:10:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:48,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:49,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727306415] [2023-03-31 00:10:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727306415] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611818917] [2023-03-31 00:10:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:49,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:49,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:49,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:49,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:10:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:49,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 33 conjunts are in the unsatisfiable core [2023-03-31 00:10:49,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:49,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:10:49,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:49,468 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:10:49,468 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 17 treesize of output 21 [2023-03-31 00:10:49,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-03-31 00:10:49,486 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 [2023-03-31 00:10:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:49,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:49,614 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 17 treesize of output 21 [2023-03-31 00:10:49,630 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-03-31 00:10:49,630 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 16 treesize of output 18 [2023-03-31 00:10:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:49,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611818917] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:10:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-03-31 00:10:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526980243] [2023-03-31 00:10:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:49,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-03-31 00:10:49,868 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:50,424 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2023-03-31 00:10:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:10:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-03-31 00:10:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:50,425 INFO L225 Difference]: With dead ends: 72 [2023-03-31 00:10:50,425 INFO L226 Difference]: Without dead ends: 56 [2023-03-31 00:10:50,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=187, Unknown=1, NotChecked=0, Total=240 [2023-03-31 00:10:50,426 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 19 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:50,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 132 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 00:10:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-03-31 00:10:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-03-31 00:10:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2023-03-31 00:10:50,438 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2023-03-31 00:10:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:50,438 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2023-03-31 00:10:50,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2023-03-31 00:10:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 00:10:50,443 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:50,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:50,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 00:10:50,663 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,SelfDestructingSolverStorable7 [2023-03-31 00:10:50,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:50,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 183709644, now seen corresponding path program 1 times [2023-03-31 00:10:50,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:50,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988845932] [2023-03-31 00:10:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:50,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988845932] [2023-03-31 00:10:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988845932] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:10:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:10:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:10:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488195289] [2023-03-31 00:10:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:10:50,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:10:50,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:10:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:10:50,766 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:50,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:50,930 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2023-03-31 00:10:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 00:10:50,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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 26 [2023-03-31 00:10:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:50,932 INFO L225 Difference]: With dead ends: 54 [2023-03-31 00:10:50,932 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 00:10:50,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:10:50,934 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:50,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 20 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:10:50,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 00:10:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-03-31 00:10:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-03-31 00:10:50,951 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 26 [2023-03-31 00:10:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:50,951 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-03-31 00:10:50,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-03-31 00:10:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-03-31 00:10:50,959 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:50,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:10:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 00:10:50,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:50,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 601446547, now seen corresponding path program 1 times [2023-03-31 00:10:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896806860] [2023-03-31 00:10:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896806860] [2023-03-31 00:10:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896806860] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241374164] [2023-03-31 00:10:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:51,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:51,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:51,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:10:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:52,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 55 conjunts are in the unsatisfiable core [2023-03-31 00:10:52,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:52,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:52,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 00:10:52,282 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-03-31 00:10:52,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-03-31 00:10:52,291 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 [2023-03-31 00:10:52,324 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:10:52,324 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 17 treesize of output 21 [2023-03-31 00:10:52,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 00:10:52,341 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 [2023-03-31 00:10:52,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:52,517 INFO L321 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2023-03-31 00:10:52,517 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 2 case distinctions, treesize of input 72 treesize of output 69 [2023-03-31 00:10:52,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2023-03-31 00:10:52,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:52,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:52,556 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 21 treesize of output 25 [2023-03-31 00:10:52,576 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 [2023-03-31 00:10:52,590 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2023-03-31 00:10:52,591 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 1 case distinctions, treesize of input 26 treesize of output 44 [2023-03-31 00:10:52,624 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2023-03-31 00:10:52,625 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 [2023-03-31 00:10:52,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 00:10:52,760 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-03-31 00:10:52,761 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 47 treesize of output 26 [2023-03-31 00:10:52,768 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 [2023-03-31 00:10:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:52,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:52,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:52,843 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 48 treesize of output 52 [2023-03-31 00:10:52,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:52,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 57 [2023-03-31 00:10:52,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:52,867 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 100 treesize of output 99 [2023-03-31 00:10:52,877 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 37 treesize of output 21 [2023-03-31 00:10:52,913 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 24 treesize of output 20 [2023-03-31 00:10:53,124 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:53,125 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 105 treesize of output 98 [2023-03-31 00:10:53,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:53,135 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 117 treesize of output 118 [2023-03-31 00:10:53,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:53,147 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 446 treesize of output 325 [2023-03-31 00:10:53,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:53,173 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 210 treesize of output 213 [2023-03-31 00:10:53,189 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 197 treesize of output 193 [2023-03-31 00:10:53,197 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 193 treesize of output 191 [2023-03-31 00:10:53,205 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 191 treesize of output 187 [2023-03-31 00:10:53,213 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 187 treesize of output 183 [2023-03-31 00:10:53,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:53,227 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 183 treesize of output 184 [2023-03-31 00:10:53,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:53,242 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 175 treesize of output 168 [2023-03-31 00:10:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:54,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241374164] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:10:54,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:10:54,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2023-03-31 00:10:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280691063] [2023-03-31 00:10:54,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:10:54,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 00:10:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:10:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 00:10:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-03-31 00:10:54,019 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:10:54,308 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2023-03-31 00:10:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 00:10:54,309 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 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 26 [2023-03-31 00:10:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:10:54,309 INFO L225 Difference]: With dead ends: 70 [2023-03-31 00:10:54,309 INFO L226 Difference]: Without dead ends: 54 [2023-03-31 00:10:54,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-03-31 00:10:54,310 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:10:54,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:10:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-03-31 00:10:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-03-31 00:10:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 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) [2023-03-31 00:10:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-03-31 00:10:54,318 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 26 [2023-03-31 00:10:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:10:54,318 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-03-31 00:10:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:10:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-03-31 00:10:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 00:10:54,319 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:10:54,319 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] [2023-03-31 00:10:54,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 00:10:54,526 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 [2023-03-31 00:10:54,526 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-03-31 00:10:54,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:10:54,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1505098259, now seen corresponding path program 1 times [2023-03-31 00:10:54,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:10:54,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781107707] [2023-03-31 00:10:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:54,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:10:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:10:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:10:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781107707] [2023-03-31 00:10:55,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781107707] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:10:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990104038] [2023-03-31 00:10:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:10:55,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:10:55,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:10:55,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:10:55,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 00:10:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:10:55,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 58 conjunts are in the unsatisfiable core [2023-03-31 00:10:55,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:10:55,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-03-31 00:10:55,247 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:10:55,247 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 17 treesize of output 21 [2023-03-31 00:10:55,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 00:10:55,261 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 [2023-03-31 00:10:55,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-03-31 00:10:55,268 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 [2023-03-31 00:10:55,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:55,361 INFO L321 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2023-03-31 00:10:55,361 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 2 case distinctions, treesize of input 50 treesize of output 51 [2023-03-31 00:10:55,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:55,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:10:55,369 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 24 treesize of output 28 [2023-03-31 00:10:55,373 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 [2023-03-31 00:10:55,378 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 [2023-03-31 00:10:55,381 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 27 treesize of output 15 [2023-03-31 00:10:55,393 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2023-03-31 00:10:55,394 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 [2023-03-31 00:10:55,630 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-03-31 00:10:55,630 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 66 treesize of output 33 [2023-03-31 00:10:55,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-03-31 00:10:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:10:55,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:10:55,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:55,706 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 95 treesize of output 93 [2023-03-31 00:10:55,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:55,710 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 102 treesize of output 100 [2023-03-31 00:10:55,716 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 247 treesize of output 169 [2023-03-31 00:10:55,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:55,887 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 165 treesize of output 150 [2023-03-31 00:10:55,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:55,895 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 173 treesize of output 158 [2023-03-31 00:10:55,951 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:55,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1759 treesize of output 1312 [2023-03-31 00:10:56,656 INFO L321 Elim1Store]: treesize reduction 294, result has 60.5 percent of original size [2023-03-31 00:10:56,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 3528 treesize of output 3691 [2023-03-31 00:10:57,105 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:57,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 1120 treesize of output 1168 [2023-03-31 00:10:57,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:57,261 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 1096 treesize of output 1030 [2023-03-31 00:10:57,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:57,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1080 treesize of output 1076 [2023-03-31 00:10:57,528 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 1012 treesize of output 964 [2023-03-31 00:10:57,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:57,619 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 1218 treesize of output 1206 [2023-03-31 00:10:57,699 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 1198 treesize of output 1162 [2023-03-31 00:10:57,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:57,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 964 treesize of output 964 [2023-03-31 00:10:57,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:10:57,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1138 treesize of output 1060