/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/list-simple/sll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:55:47,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:55:47,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:55:47,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:55:47,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:55:47,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:55:47,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:55:47,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:55:47,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:55:47,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:55:47,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:55:47,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 04:55:47,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:55:47,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:55:47,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:55:47,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:55:47,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:55:47,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:55:47,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:55:47,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:55:47,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:55:47,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:55:47,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:55:47,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:55:47,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 04:55:47,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 04:55:47,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 04:55:47,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 04:55:47,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 04:55:47,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 04:55:47,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:55:47,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:55:47,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:55:47,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:55:47,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:55:47,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:55:47,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:55:47,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:55:47,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:55:47,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:55:47,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:55:47,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 04:55:47,370 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:55:47,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:55:47,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:55:47,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:55:47,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:55:47,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:55:47,371 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:55:47,371 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:55:47,371 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:55:47,371 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:55:47,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:55:47,372 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:55:47,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:55:47,373 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:55:47,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:55:47,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:55:47,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:55:47,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:55:47,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:55:47,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:55:47,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:55:47,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:55:47,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:55:47,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:55:47,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:55:47,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:55:47,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:55:47,539 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:55:47,539 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:55:47,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_insert_equal.i [2023-04-01 04:55:48,588 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:55:48,813 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:55:48,814 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_insert_equal.i [2023-04-01 04:55:48,842 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761b8fd41/36fa1e81fad644feb27bf1483c0b9f81/FLAGc6fc0845c [2023-04-01 04:55:48,868 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/761b8fd41/36fa1e81fad644feb27bf1483c0b9f81 [2023-04-01 04:55:48,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:55:48,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:55:48,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:55:48,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:55:48,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:55:48,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:55:48" (1/1) ... [2023-04-01 04:55:48,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c10f6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:48, skipping insertion in model container [2023-04-01 04:55:48,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:55:48" (1/1) ... [2023-04-01 04:55:48,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:55:48,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:55:49,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_insert_equal.i[24301,24314] [2023-04-01 04:55:49,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:55:49,142 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:55:49,167 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_insert_equal.i[24301,24314] [2023-04-01 04:55:49,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:55:49,184 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:55:49,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49 WrapperNode [2023-04-01 04:55:49,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:55:49,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:55:49,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:55:49,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:55:49,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:55:49,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:55:49,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:55:49,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:55:49,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (1/1) ... [2023-04-01 04:55:49,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:55:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:55:49,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 04:55:49,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 04:55:49,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:55:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:55:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:55:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2023-04-01 04:55:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-01 04:55:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-01 04:55:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-01 04:55:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-01 04:55:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-01 04:55:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-01 04:55:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-01 04:55:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-01 04:55:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-01 04:55:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-01 04:55:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-01 04:55:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-01 04:55:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-01 04:55:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-01 04:55:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-01 04:55:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-01 04:55:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-01 04:55:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-01 04:55:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 04:55:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-01 04:55:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-01 04:55:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-01 04:55:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-01 04:55:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 04:55:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 04:55:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:55:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:55:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:55:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:55:49,606 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:55:49,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:55:49,628 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-04-01 04:55:49,812 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:55:49,875 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:55:49,875 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-01 04:55:49,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:55:49 BoogieIcfgContainer [2023-04-01 04:55:49,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:55:49,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:55:49,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:55:49,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:55:49,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:55:48" (1/3) ... [2023-04-01 04:55:49,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b99d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:55:49, skipping insertion in model container [2023-04-01 04:55:49,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:55:49" (2/3) ... [2023-04-01 04:55:49,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b99d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:55:49, skipping insertion in model container [2023-04-01 04:55:49,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:55:49" (3/3) ... [2023-04-01 04:55:49,901 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_insert_equal.i [2023-04-01 04:55:49,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:55:49,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:55:49,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:55:49,959 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@613a55b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:55:49,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:55:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-01 04:55:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 04:55:49,967 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:55:49,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:55:49,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:55:49,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:55:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2137081021, now seen corresponding path program 1 times [2023-04-01 04:55:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:55:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327963635] [2023-04-01 04:55:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:55:49,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:55:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:55:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:55:50,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:55:50,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327963635] [2023-04-01 04:55:50,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327963635] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:55:50,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:55:50,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 04:55:50,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492578390] [2023-04-01 04:55:50,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:55:50,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:55:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:55:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:55:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:55:50,422 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 3 states have (on average 5.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 04:55:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:55:50,508 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2023-04-01 04:55:50,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 04:55:50,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-04-01 04:55:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:55:50,515 INFO L225 Difference]: With dead ends: 73 [2023-04-01 04:55:50,515 INFO L226 Difference]: Without dead ends: 31 [2023-04-01 04:55:50,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 04:55:50,519 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:55:50,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:55:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-01 04:55:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-04-01 04:55:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 04:55:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-04-01 04:55:50,545 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2023-04-01 04:55:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:55:50,545 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-04-01 04:55:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 04:55:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-04-01 04:55:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 04:55:50,546 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:55:50,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:55:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:55:50,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:55:50,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:55:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 929563521, now seen corresponding path program 1 times [2023-04-01 04:55:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:55:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972088836] [2023-04-01 04:55:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:55:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:55:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:55:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 04:55:50,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:55:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972088836] [2023-04-01 04:55:50,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972088836] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:55:50,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613198841] [2023-04-01 04:55:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:55:50,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:55:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:55:50,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:55:50,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 04:55:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:55:50,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 04:55:50,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:55:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:55:50,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:55:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 04:55:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613198841] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:55:51,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [367044776] [2023-04-01 04:55:51,106 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-01 04:55:51,106 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:55:51,108 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:55:51,111 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:55:51,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:55:51,175 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-01 04:55:51,519 INFO L197 IcfgInterpreter]: Interpreting procedure sll_insert with input of size 37 for LOIs [2023-04-01 04:55:51,694 INFO L197 IcfgInterpreter]: Interpreting procedure sll_create with input of size 44 for LOIs [2023-04-01 04:55:51,896 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2023-04-01 04:55:51,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 04:55:51,906 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:55:52,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [367044776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:55:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 04:55:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6, 6] total 31 [2023-04-01 04:55:52,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759973359] [2023-04-01 04:55:52,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:55:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 04:55:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:55:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 04:55:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2023-04-01 04:55:52,678 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 04:55:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:55:54,532 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2023-04-01 04:55:54,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 04:55:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 31 [2023-04-01 04:55:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:55:54,534 INFO L225 Difference]: With dead ends: 38 [2023-04-01 04:55:54,534 INFO L226 Difference]: Without dead ends: 31 [2023-04-01 04:55:54,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=318, Invalid=2232, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 04:55:54,536 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 04:55:54,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 14 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 04:55:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-04-01 04:55:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-04-01 04:55:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 04:55:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-04-01 04:55:54,543 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 31 [2023-04-01 04:55:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:55:54,543 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-04-01 04:55:54,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 04:55:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-04-01 04:55:54,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-01 04:55:54,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:55:54,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:55:54,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 04:55:54,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:55:54,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:55:54,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:55:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash -956006394, now seen corresponding path program 1 times [2023-04-01 04:55:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:55:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714186754] [2023-04-01 04:55:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:55:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:55:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:55:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 04:55:54,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:55:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714186754] [2023-04-01 04:55:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714186754] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:55:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369749064] [2023-04-01 04:55:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:55:54,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:55:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:55:54,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:55:54,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 04:55:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:55:55,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 04:55:55,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:55:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 04:55:55,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:55:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 04:55:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369749064] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:55:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1665632010] [2023-04-01 04:55:55,192 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-01 04:55:55,192 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:55:55,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:55:55,193 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:55:55,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:55:55,205 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-01 04:55:55,435 INFO L197 IcfgInterpreter]: Interpreting procedure sll_insert with input of size 37 for LOIs [2023-04-01 04:55:55,668 INFO L197 IcfgInterpreter]: Interpreting procedure sll_create with input of size 44 for LOIs [2023-04-01 04:55:55,860 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2023-04-01 04:55:55,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 04:55:55,868 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:55:57,222 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '764#(and (= main_~data~0 1) (<= 1 |#StackHeapBarrier|) (= |main_~#s~0.offset| 0) (= main_~count~0 0) (= main_~ptr~0.base (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) 0)) (= main_~len~0 2) (= main_~temp~2.base (select (select |#memory_$Pointer$.base| main_~ptr~0.base) (+ main_~ptr~0.offset 4))) (not (= (select (select |#memory_int| main_~ptr~0.base) main_~ptr~0.offset) 1)) (= |#NULL.offset| 0) (or (not (= main_~ptr~0.offset 0)) (not (= main_~ptr~0.base 0))) (= (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) 0) main_~ptr~0.offset) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) (+ main_~ptr~0.offset 4)) main_~temp~2.offset) (= |#NULL.base| 0))' at error location [2023-04-01 04:55:57,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:55:57,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 04:55:57,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-04-01 04:55:57,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486719748] [2023-04-01 04:55:57,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 04:55:57,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 04:55:57,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:55:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 04:55:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260 [2023-04-01 04:55:57,224 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 8 states have (on average 4.25) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-01 04:55:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:55:57,302 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-04-01 04:55:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 04:55:57,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 4.25) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 32 [2023-04-01 04:55:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:55:57,303 INFO L225 Difference]: With dead ends: 54 [2023-04-01 04:55:57,303 INFO L226 Difference]: Without dead ends: 35 [2023-04-01 04:55:57,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 04:55:57,304 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:55:57,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 110 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 04:55:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-01 04:55:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-04-01 04:55:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:55:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2023-04-01 04:55:57,311 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 32 [2023-04-01 04:55:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:55:57,311 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2023-04-01 04:55:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 4.25) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-04-01 04:55:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-04-01 04:55:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-04-01 04:55:57,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:55:57,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:55:57,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 04:55:57,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-04-01 04:55:57,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:55:57,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:55:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash -862410172, now seen corresponding path program 2 times [2023-04-01 04:55:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:55:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748117636] [2023-04-01 04:55:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:55:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:55:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:55:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 04:55:59,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:55:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748117636] [2023-04-01 04:55:59,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748117636] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:55:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220068432] [2023-04-01 04:55:59,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 04:55:59,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:55:59,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:55:59,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:55:59,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 04:55:59,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 04:55:59,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 04:55:59,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 111 conjunts are in the unsatisfiable core [2023-04-01 04:55:59,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:55:59,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-01 04:55:59,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-01 04:56:00,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-01 04:56:00,216 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 36 treesize of output 20 [2023-04-01 04:56:00,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-04-01 04:56:00,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-04-01 04:56:00,244 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 7 treesize of output 3 [2023-04-01 04:56:02,066 INFO L321 Elim1Store]: treesize reduction 205, result has 21.2 percent of original size [2023-04-01 04:56:02,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 486 treesize of output 873 [2023-04-01 04:56:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:02,258 INFO L217 Elim1Store]: Index analysis took 134 ms [2023-04-01 04:56:11,219 WARN L223 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 263 DAG size of output: 113 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-01 04:56:11,220 INFO L321 Elim1Store]: treesize reduction 1334, result has 21.9 percent of original size [2023-04-01 04:56:11,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 539 treesize of output 2243 [2023-04-01 04:56:11,389 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 1239 treesize of output 1119 [2023-04-01 04:56:11,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:11,842 INFO L217 Elim1Store]: Index analysis took 251 ms [2023-04-01 04:56:14,562 INFO L321 Elim1Store]: treesize reduction 185, result has 25.4 percent of original size [2023-04-01 04:56:14,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 690 treesize of output 1100 [2023-04-01 04:56:14,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1326 treesize of output 1178 [2023-04-01 04:56:15,218 INFO L217 Elim1Store]: Index analysis took 176 ms [2023-04-01 04:56:18,756 INFO L321 Elim1Store]: treesize reduction 4, result has 93.4 percent of original size [2023-04-01 04:56:18,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 182 treesize of output 226 [2023-04-01 04:56:19,138 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 302 treesize of output 292 [2023-04-01 04:56:19,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 141 [2023-04-01 04:56:20,357 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 141 treesize of output 139 [2023-04-01 04:56:21,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 139 [2023-04-01 04:56:21,753 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 112 treesize of output 102 [2023-04-01 04:56:23,321 INFO L217 Elim1Store]: Index analysis took 261 ms [2023-04-01 04:56:23,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 140 [2023-04-01 04:56:29,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:29,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:33,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:56:33,606 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:56:34,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:56:36,628 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:56:37,378 INFO L217 Elim1Store]: Index analysis took 4151 ms