/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-ext3-properties/dll_circular_traversal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:52:38,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:52:38,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:52:38,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:52:38,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:52:38,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:52:38,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:52:38,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:52:38,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:52:38,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:52:38,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:52:38,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:52:38,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:52:38,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:52:38,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:52:38,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:52:38,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:52:38,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:52:38,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:52:38,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:52:38,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:52:38,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:52:38,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:52:38,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:52:38,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:52:38,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:52:38,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:52:38,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:52:38,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:52:38,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:52:38,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:52:38,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:52:38,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:52:38,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:52:38,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:52:38,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:52:38,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:52:38,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:52:38,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:52:38,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:52:38,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:52:38,313 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 [2023-04-02 21:52:38,341 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:52:38,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:52:38,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:52:38,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:52:38,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:52:38,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:52:38,343 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:52:38,343 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:52:38,343 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:52:38,343 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:52:38,344 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:52:38,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:52:38,344 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:52:38,345 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:52:38,345 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:52:38,345 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:52:38,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:52:38,345 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:52:38,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:52:38,346 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:52:38,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:52:38,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:52:38,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:52:38,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:52:38,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:52:38,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:52:38,347 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:52:38,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:52:38,347 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:52:38,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:52:38,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:52:38,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:52:38,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:52:38,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:52:38,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:52:38,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:52:38,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:52:38,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:52:38,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:52:38,618 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:52:38,619 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:52:38,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2023-04-02 21:52:39,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:52:40,023 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:52:40,023 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2023-04-02 21:52:40,039 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2600a0f0f/af291ef438fb45bbbf495649d5a3c209/FLAGc36b71708 [2023-04-02 21:52:40,054 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2600a0f0f/af291ef438fb45bbbf495649d5a3c209 [2023-04-02 21:52:40,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:52:40,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:52:40,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:52:40,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:52:40,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:52:40,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639a0a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40, skipping insertion in model container [2023-04-02 21:52:40,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:52:40,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:52:40,356 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-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2023-04-02 21:52:40,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:52:40,374 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:52:40,417 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-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2023-04-02 21:52:40,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:52:40,439 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:52:40,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40 WrapperNode [2023-04-02 21:52:40,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:52:40,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:52:40,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:52:40,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:52:40,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:52:40,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:52:40,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:52:40,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:52:40,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (1/1) ... [2023-04-02 21:52:40,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:52:40,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:52:40,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:52:40,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:52:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:52:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:52:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:52:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 21:52:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 21:52:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-04-02 21:52:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2023-04-02 21:52:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:52:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:52:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:52:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 21:52:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 21:52:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:52:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 21:52:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 21:52:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 21:52:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 21:52:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 21:52:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 21:52:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 21:52:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 21:52:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 21:52:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 21:52:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 21:52:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 21:52:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 21:52:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 21:52:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 21:52:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 21:52:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 21:52:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 21:52:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 21:52:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 21:52:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 21:52:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 21:52:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 21:52:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 21:52:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 21:52:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 21:52:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 21:52:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 21:52:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 21:52:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 21:52:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 21:52:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 21:52:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 21:52:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-04-02 21:52:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2023-04-02 21:52:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 21:52:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 21:52:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:52:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:52:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:52:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 21:52:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:52:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:52:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:52:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:52:40,932 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:52:40,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:52:41,057 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-04-02 21:52:41,117 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:52:41,155 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:52:41,155 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 21:52:41,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:52:41 BoogieIcfgContainer [2023-04-02 21:52:41,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:52:41,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:52:41,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:52:41,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:52:41,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:52:40" (1/3) ... [2023-04-02 21:52:41,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445afc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:52:41, skipping insertion in model container [2023-04-02 21:52:41,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:52:40" (2/3) ... [2023-04-02 21:52:41,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445afc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:52:41, skipping insertion in model container [2023-04-02 21:52:41,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:52:41" (3/3) ... [2023-04-02 21:52:41,171 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2023-04-02 21:52:41,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:52:41,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 21:52:41,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:52:41,245 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;@765dd2d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:52:41,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 21:52:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:52:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 21:52:41,256 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:52:41,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:52:41,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:52:41,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:52:41,261 INFO L85 PathProgramCache]: Analyzing trace with hash -455546171, now seen corresponding path program 1 times [2023-04-02 21:52:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:52:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804447297] [2023-04-02 21:52:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:52:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:52:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:52:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:42,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:52:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804447297] [2023-04-02 21:52:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804447297] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:52:42,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:52:42,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 21:52:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260272086] [2023-04-02 21:52:42,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:52:42,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 21:52:42,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:52:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 21:52:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 21:52:42,079 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 21:52:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:52:42,299 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2023-04-02 21:52:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 21:52:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-04-02 21:52:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:52:42,308 INFO L225 Difference]: With dead ends: 51 [2023-04-02 21:52:42,308 INFO L226 Difference]: Without dead ends: 30 [2023-04-02 21:52:42,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 21:52:42,316 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:52:42,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 154 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:52:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-04-02 21:52:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-04-02 21:52:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 21:52:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-04-02 21:52:42,357 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2023-04-02 21:52:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:52:42,358 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-04-02 21:52:42,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 21:52:42,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-04-02 21:52:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 21:52:42,359 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:52:42,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:52:42,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:52:42,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:52:42,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:52:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash -431779351, now seen corresponding path program 1 times [2023-04-02 21:52:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:52:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630522615] [2023-04-02 21:52:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:52:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:52:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:52:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:42,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:52:42,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630522615] [2023-04-02 21:52:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630522615] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:52:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850842038] [2023-04-02 21:52:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:52:42,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:52:42,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:52:42,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:52:42,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:52:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:52:42,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 21:52:42,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:52:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:42,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:52:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850842038] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:52:42,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1598637276] [2023-04-02 21:52:42,835 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 21:52:42,835 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:52:42,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:52:42,842 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:52:42,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:52:43,007 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:52:43,425 INFO L197 IcfgInterpreter]: Interpreting procedure dll_circular_create with input of size 29 for LOIs [2023-04-02 21:52:43,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:52:43,764 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:52:51,184 WARN L223 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 73 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:52:51,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '273#(and (not (= (select (select |#memory_int| main_~ptr~0.base) 0) 1)) (<= 1 |#StackHeapBarrier|) (= main_~ptr~0.offset 0) (= main_~head~1.base main_~ptr~0.base) (= 5 main_~len~0) (= |#NULL.offset| 0) (= main_~data_new~0 1) (= main_~data_init~0 1) (= 0 main_~head~1.offset) (= |#NULL.base| 0) (<= (+ main_~head~1.base 1) |#StackHeapBarrier|))' at error location [2023-04-02 21:52:51,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:52:51,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:52:51,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-04-02 21:52:51,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859169095] [2023-04-02 21:52:51,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:52:51,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 21:52:51,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:52:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 21:52:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2023-04-02 21:52:51,337 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 6 states have (on average 3.5) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:52:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:52:51,428 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2023-04-02 21:52:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 21:52:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 3.5) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2023-04-02 21:52:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:52:51,430 INFO L225 Difference]: With dead ends: 44 [2023-04-02 21:52:51,430 INFO L226 Difference]: Without dead ends: 29 [2023-04-02 21:52:51,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-04-02 21:52:51,432 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:52:51,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:52:51,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-02 21:52:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-04-02 21:52:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:52:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-04-02 21:52:51,437 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-04-02 21:52:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:52:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-04-02 21:52:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 3.5) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:52:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-04-02 21:52:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 21:52:51,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:52:51,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:52:51,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 21:52:51,644 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 [2023-04-02 21:52:51,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:52:51,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:52:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1064048571, now seen corresponding path program 2 times [2023-04-02 21:52:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:52:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284852755] [2023-04-02 21:52:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:52:51,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:52:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:52:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:51,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:52:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284852755] [2023-04-02 21:52:51,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284852755] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:52:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617185838] [2023-04-02 21:52:51,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 21:52:51,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:52:51,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:52:51,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:52:51,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 21:52:52,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 21:52:52,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:52:52,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 21:52:52,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:52:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:52,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:52:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:52:52,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617185838] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:52:52,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2028539779] [2023-04-02 21:52:52,242 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 21:52:52,242 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:52:52,242 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:52:52,242 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:52:52,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:52:52,264 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:52:52,516 INFO L197 IcfgInterpreter]: Interpreting procedure dll_circular_create with input of size 29 for LOIs [2023-04-02 21:52:52,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:52:52,771 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:53:01,564 WARN L223 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 73 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:53:01,715 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '525#(and (not (= (select (select |#memory_int| main_~ptr~0.base) 0) 1)) (<= 1 |#StackHeapBarrier|) (= main_~ptr~0.offset 0) (= main_~head~1.base main_~ptr~0.base) (= 5 main_~len~0) (= |#NULL.offset| 0) (= main_~data_new~0 1) (= main_~data_init~0 1) (= 0 main_~head~1.offset) (= |#NULL.base| 0) (<= (+ main_~head~1.base 1) |#StackHeapBarrier|))' at error location [2023-04-02 21:53:01,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:53:01,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:53:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-04-02 21:53:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469562129] [2023-04-02 21:53:01,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:53:01,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 21:53:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:53:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 21:53:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-04-02 21:53:01,718 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:53:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:53:01,823 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-04-02 21:53:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 21:53:01,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-04-02 21:53:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:53:01,825 INFO L225 Difference]: With dead ends: 43 [2023-04-02 21:53:01,825 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 21:53:01,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2023-04-02 21:53:01,827 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:53:01,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 128 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:53:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 21:53:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-04-02 21:53:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:53:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-04-02 21:53:01,831 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2023-04-02 21:53:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:53:01,831 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-04-02 21:53:01,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 21:53:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-04-02 21:53:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 21:53:01,832 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:53:01,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:53:01,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 21:53:02,041 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 [2023-04-02 21:53:02,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:53:02,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:53:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash 730178665, now seen corresponding path program 3 times [2023-04-02 21:53:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:53:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447960466] [2023-04-02 21:53:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:53:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:53:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:53:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:53:02,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:53:02,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447960466] [2023-04-02 21:53:02,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447960466] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:53:02,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362692784] [2023-04-02 21:53:02,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 21:53:02,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:53:02,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:53:02,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:53:02,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 21:53:02,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 21:53:02,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:53:02,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 21:53:02,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:53:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:53:02,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:53:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:53:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362692784] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:53:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [704295835] [2023-04-02 21:53:03,074 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 21:53:03,074 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:53:03,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:53:03,075 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:53:03,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:53:03,098 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:53:03,286 INFO L197 IcfgInterpreter]: Interpreting procedure dll_circular_create with input of size 29 for LOIs [2023-04-02 21:53:03,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:53:03,525 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:53:12,240 WARN L223 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 73 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:53:12,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (not (= (select (select |#memory_int| main_~ptr~0.base) 0) 1)) (<= 1 |#StackHeapBarrier|) (= main_~ptr~0.offset 0) (= main_~head~1.base main_~ptr~0.base) (= 5 main_~len~0) (= |#NULL.offset| 0) (= main_~data_new~0 1) (= main_~data_init~0 1) (= 0 main_~head~1.offset) (= |#NULL.base| 0) (<= (+ main_~head~1.base 1) |#StackHeapBarrier|))' at error location [2023-04-02 21:53:12,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:53:12,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:53:12,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-04-02 21:53:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764178225] [2023-04-02 21:53:12,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:53:12,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 21:53:12,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:53:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 21:53:12,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-04-02 21:53:12,375 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:53:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:53:12,457 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2023-04-02 21:53:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 21:53:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-04-02 21:53:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:53:12,459 INFO L225 Difference]: With dead ends: 46 [2023-04-02 21:53:12,459 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 21:53:12,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2023-04-02 21:53:12,461 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:53:12,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 123 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:53:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 21:53:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-04-02 21:53:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:53:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-04-02 21:53:12,470 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2023-04-02 21:53:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:53:12,470 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-04-02 21:53:12,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:53:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-04-02 21:53:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-02 21:53:12,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:53:12,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:53:12,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 21:53:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:53:12,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:53:12,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:53:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1685767621, now seen corresponding path program 4 times [2023-04-02 21:53:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:53:12,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801379591] [2023-04-02 21:53:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:53:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:53:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:53:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 21:53:13,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:53:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801379591] [2023-04-02 21:53:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801379591] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:53:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316560319] [2023-04-02 21:53:13,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 21:53:13,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:53:13,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:53:13,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:53:13,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 21:53:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:53:13,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 56 conjunts are in the unsatisfiable core [2023-04-02 21:53:13,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:53:13,705 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 [2023-04-02 21:53:13,766 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:53:13,766 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 [2023-04-02 21:53:13,800 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:53:13,801 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 [2023-04-02 21:53:13,837 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:53:13,838 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 [2023-04-02 21:53:13,951 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-04-02 21:53:13,952 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 [2023-04-02 21:53:14,011 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 14 treesize of output 14 [2023-04-02 21:53:14,017 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 14 treesize of output 16 [2023-04-02 21:53:14,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:53:14,062 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 22 treesize of output 19 [2023-04-02 21:53:14,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 [2023-04-02 21:53:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 21:53:14,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:53:14,458 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-04-02 21:53:14,459 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 1508 treesize of output 1 [2023-04-02 21:53:14,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_698 (Array Int Int))) (= (select (select (store |c_#memory_int| c_dll_circular_create_~last~0.base v_ArrVal_698) c_dll_circular_create_~head~0.base) c_dll_circular_create_~head~0.offset) |c_dll_circular_create_#in~data|)) is different from false [2023-04-02 21:53:14,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:14,484 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 21 treesize of output 22 [2023-04-02 21:53:14,489 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 60 treesize of output 52 [2023-04-02 21:53:14,497 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 22 [2023-04-02 21:53:14,500 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 46 treesize of output 42 [2023-04-02 21:53:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 4 not checked. [2023-04-02 21:53:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316560319] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:53:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436305165] [2023-04-02 21:53:15,011 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-04-02 21:53:15,011 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:53:15,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:53:15,011 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:53:15,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:53:15,029 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:53:15,211 INFO L197 IcfgInterpreter]: Interpreting procedure dll_circular_create with input of size 29 for LOIs [2023-04-02 21:53:15,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:53:15,407 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:53:21,161 WARN L223 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 73 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 21:53:21,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1109#(and (not (= (select (select |#memory_int| main_~ptr~0.base) 0) 1)) (<= 1 |#StackHeapBarrier|) (= main_~ptr~0.offset 0) (= main_~head~1.base main_~ptr~0.base) (= 5 main_~len~0) (= |#NULL.offset| 0) (= main_~data_new~0 1) (= main_~data_init~0 1) (= 0 main_~head~1.offset) (= |#NULL.base| 0) (<= (+ main_~head~1.base 1) |#StackHeapBarrier|))' at error location [2023-04-02 21:53:21,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:53:21,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:53:21,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 26 [2023-04-02 21:53:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998851272] [2023-04-02 21:53:21,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:53:21,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 21:53:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:53:21,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 21:53:21,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1429, Unknown=1, NotChecked=76, Total=1640 [2023-04-02 21:53:21,302 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 21:53:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:53:21,861 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-04-02 21:53:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 21:53:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-04-02 21:53:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:53:21,862 INFO L225 Difference]: With dead ends: 37 [2023-04-02 21:53:21,863 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 21:53:21,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=224, Invalid=1941, Unknown=1, NotChecked=90, Total=2256 [2023-04-02 21:53:21,864 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 21:53:21,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 145 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2023-04-02 21:53:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 21:53:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-04-02 21:53:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:53:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-04-02 21:53:21,870 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 27 [2023-04-02 21:53:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:53:21,870 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-04-02 21:53:21,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 21:53:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-04-02 21:53:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 21:53:21,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:53:21,871 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:53:21,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 21:53:22,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:53:22,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 21:53:22,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:53:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash -348210102, now seen corresponding path program 1 times [2023-04-02 21:53:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:53:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618615063] [2023-04-02 21:53:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:53:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:53:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:53:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:53:23,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:53:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618615063] [2023-04-02 21:53:23,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618615063] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:53:23,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455590658] [2023-04-02 21:53:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:53:23,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:53:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:53:23,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:53:24,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 21:53:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:53:24,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 101 conjunts are in the unsatisfiable core [2023-04-02 21:53:24,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:53:24,224 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 [2023-04-02 21:53:24,271 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:53:24,272 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 [2023-04-02 21:53:24,319 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:53:24,320 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 [2023-04-02 21:53:24,425 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-04-02 21:53:24,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-04-02 21:53:24,547 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 14 treesize of output 14 [2023-04-02 21:53:24,556 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 14 treesize of output 16 [2023-04-02 21:53:24,669 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-04-02 21:53:24,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-04-02 21:53:24,773 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 0 case distinctions, treesize of input 23 treesize of output 23 [2023-04-02 21:53:24,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 21:53:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:53:24,797 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 22 treesize of output 19 [2023-04-02 21:53:24,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2023-04-02 21:53:24,824 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 21:53:24,824 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 1 case distinctions, treesize of input 49 treesize of output 46 [2023-04-02 21:53:24,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2023-04-02 21:53:24,845 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 18 treesize of output 20 [2023-04-02 21:53:24,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:53:24,952 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 22 treesize of output 19 [2023-04-02 21:53:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:53:24,963 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 42 treesize of output 35 [2023-04-02 21:53:24,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-04-02 21:53:24,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 26 [2023-04-02 21:53:24,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-04-02 21:53:24,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 21:53:25,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 [2023-04-02 21:53:25,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-04-02 21:53:25,185 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 27 treesize of output 15 [2023-04-02 21:53:25,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-04-02 21:53:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 21:53:25,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:53:25,292 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_994 (Array Int Int))) (= c_main_~data_init~0 (let ((.cse0 (+ c_main_~ptr~0.offset 4))) (select (select (store |c_#memory_int| c_main_~ptr~0.base v_ArrVal_994) (select (select |c_#memory_$Pointer$.base| c_main_~ptr~0.base) .cse0)) (select (select |c_#memory_$Pointer$.offset| c_main_~ptr~0.base) .cse0))))) is different from false [2023-04-02 21:53:25,305 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_994 (Array Int Int))) (= c_main_~data_init~0 (let ((.cse0 (+ 4 |c_main_#t~ret6.offset|))) (select (select (store |c_#memory_int| |c_main_#t~ret6.base| v_ArrVal_994) (select (select |c_#memory_$Pointer$.base| |c_main_#t~ret6.base|) .cse0)) (select (select |c_#memory_$Pointer$.offset| |c_main_#t~ret6.base|) .cse0))))) is different from false [2023-04-02 21:53:26,253 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-02 21:53:26,254 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 144 treesize of output 1 [2023-04-02 21:53:26,322 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_983 Int) (v_ArrVal_985 (Array Int Int)) (v_ArrVal_981 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (= (let ((.cse0 (+ c_dll_circular_create_~head~0.offset 4))) (select (select (store (store |c_#memory_int| c_dll_circular_create_~last~0.base (store (select |c_#memory_int| c_dll_circular_create_~last~0.base) (+ c_dll_circular_create_~last~0.offset 4) v_ArrVal_983)) c_dll_circular_create_~head~0.base v_ArrVal_994) (select (select (store |c_#memory_$Pointer$.base| c_dll_circular_create_~last~0.base v_ArrVal_981) c_dll_circular_create_~head~0.base) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| c_dll_circular_create_~last~0.base v_ArrVal_985) c_dll_circular_create_~head~0.base) .cse0))) |c_dll_circular_create_#in~data|)) is different from false [2023-04-02 21:53:26,338 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:26,338 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 114 treesize of output 109 [2023-04-02 21:53:26,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:26,352 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 102 treesize of output 108 [2023-04-02 21:53:26,359 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 732 treesize of output 714 [2023-04-02 21:53:26,372 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 176 treesize of output 168 [2023-04-02 21:53:26,389 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:26,390 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 342 treesize of output 308 [2023-04-02 21:53:26,399 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 2160 treesize of output 2106 [2023-04-02 21:53:26,414 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 126 treesize of output 118 [2023-04-02 21:53:26,423 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 127 treesize of output 123 [2023-04-02 21:53:26,432 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 123 treesize of output 119 [2023-04-02 21:53:26,689 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (= c_dll_circular_create_~new_head~0.base c_dll_circular_create_~head~0.base))) (let ((.cse4 (not .cse10)) (.cse11 (= c_dll_circular_create_~new_head~0.base c_dll_circular_create_~last~0.base)) (.cse1 (+ c_dll_circular_create_~last~0.offset 4)) (.cse3 (+ c_dll_circular_create_~head~0.offset 8))) (and (or (and (or (forall ((v_ArrVal_983 Int) (v_arrayElimCell_52 Int) (v_ArrVal_970 Int) (v_arrayElimArr_9 (Array Int Int)) (v_arrayElimCell_53 Int) (v_ArrVal_994 (Array Int Int))) (or (= (select (select (store (let ((.cse0 (let ((.cse2 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse2 c_dll_circular_create_~head~0.base (store (select .cse2 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse0 c_dll_circular_create_~last~0.base (store (select .cse0 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994) v_arrayElimCell_52) v_arrayElimCell_53) |c_dll_circular_create_#in~data|) (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset))))) .cse4) (forall ((v_arrayElimArr_9 (Array Int Int))) (or (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset))) (forall ((v_ArrVal_983 Int) (v_ArrVal_970 Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse5 (store (let ((.cse6 (let ((.cse7 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse7 c_dll_circular_create_~head~0.base (store (select .cse7 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse6 c_dll_circular_create_~last~0.base (store (select .cse6 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994))) (or (forall ((v_arrayElimCell_52 Int) (v_arrayElimCell_53 Int)) (= (select (select .cse5 v_arrayElimCell_52) v_arrayElimCell_53) |c_dll_circular_create_#in~data|)) (= |c_dll_circular_create_#in~data| (select (select .cse5 c_dll_circular_create_~head~0.base) c_dll_circular_create_~head~0.offset))))))) (or (forall ((v_ArrVal_983 Int) (v_ArrVal_970 Int) (v_arrayElimArr_9 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (or (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset))) (= |c_dll_circular_create_#in~data| (select (select (store (let ((.cse8 (let ((.cse9 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse9 c_dll_circular_create_~head~0.base (store (select .cse9 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse8 c_dll_circular_create_~last~0.base (store (select .cse8 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994) c_dll_circular_create_~head~0.base) c_dll_circular_create_~head~0.offset)))) .cse10)) .cse11) (or (forall ((v_ArrVal_983 Int) (v_arrayElimCell_52 Int) (v_ArrVal_970 Int) (v_arrayElimCell_51 Int) (v_arrayElimCell_49 Int) (v_arrayElimArr_9 (Array Int Int)) (v_arrayElimCell_53 Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse12 (store (let ((.cse13 (let ((.cse14 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse14 c_dll_circular_create_~head~0.base (store (select .cse14 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse13 c_dll_circular_create_~last~0.base (store (select .cse13 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994))) (or (= (select (select .cse12 v_arrayElimCell_52) v_arrayElimCell_53) |c_dll_circular_create_#in~data|) (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset))) (= |c_dll_circular_create_#in~data| (select (select .cse12 v_arrayElimCell_49) v_arrayElimCell_51))))) .cse4) (or (not .cse11) (forall ((v_ArrVal_983 Int) (v_ArrVal_970 Int) (v_arrayElimCell_51 Int) (v_arrayElimCell_49 Int) (v_arrayElimArr_9 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (or (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset))) (= |c_dll_circular_create_#in~data| (select (select (store (let ((.cse15 (let ((.cse16 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse16 c_dll_circular_create_~head~0.base (store (select .cse16 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse15 c_dll_circular_create_~last~0.base (store (select .cse15 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994) v_arrayElimCell_49) v_arrayElimCell_51))))) (or (forall ((v_ArrVal_983 Int) (v_ArrVal_970 Int) (v_arrayElimCell_51 Int) (v_arrayElimCell_49 Int) (v_arrayElimArr_9 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (let ((.cse17 (store (let ((.cse18 (let ((.cse19 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse19 c_dll_circular_create_~head~0.base (store (select .cse19 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse18 c_dll_circular_create_~last~0.base (store (select .cse18 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994))) (or (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset))) (= |c_dll_circular_create_#in~data| (select (select .cse17 v_arrayElimCell_49) v_arrayElimCell_51)) (= |c_dll_circular_create_#in~data| (select (select .cse17 c_dll_circular_create_~head~0.base) c_dll_circular_create_~head~0.offset))))) .cse10) (forall ((v_arrayElimArr_9 (Array Int Int))) (or (forall ((v_ArrVal_983 Int) (v_ArrVal_970 Int) (v_arrayElimCell_51 Int) (v_arrayElimCell_49 Int) (v_ArrVal_994 (Array Int Int))) (let ((.cse20 (store (let ((.cse21 (let ((.cse22 (store |c_#memory_int| c_dll_circular_create_~new_head~0.base v_arrayElimArr_9))) (store .cse22 c_dll_circular_create_~head~0.base (store (select .cse22 c_dll_circular_create_~head~0.base) .cse3 v_ArrVal_970))))) (store .cse21 c_dll_circular_create_~last~0.base (store (select .cse21 c_dll_circular_create_~last~0.base) .cse1 v_ArrVal_983))) c_dll_circular_create_~new_head~0.base v_ArrVal_994))) (or (forall ((v_arrayElimCell_52 Int) (v_arrayElimCell_53 Int)) (= (select (select .cse20 v_arrayElimCell_52) v_arrayElimCell_53) |c_dll_circular_create_#in~data|)) (= |c_dll_circular_create_#in~data| (select (select .cse20 v_arrayElimCell_49) v_arrayElimCell_51)) (= |c_dll_circular_create_#in~data| (select (select .cse20 c_dll_circular_create_~head~0.base) c_dll_circular_create_~head~0.offset))))) (not (= c_dll_circular_create_~data (select v_arrayElimArr_9 c_dll_circular_create_~new_head~0.offset)))))))) is different from false [2023-04-02 21:53:26,986 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-04-02 21:53:26,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 78 [2023-04-02 21:53:27,111 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-04-02 21:53:27,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 52 [2023-04-02 21:53:30,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:30,570 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 289 treesize of output 201 [2023-04-02 21:53:31,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:31,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18701562 treesize of output 18601572 [2023-04-02 21:53:37,951 WARN L223 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 6484 DAG size of output: 732 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-04-02 21:53:38,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:38,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21401 treesize of output 21057 [2023-04-02 21:53:39,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:39,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28305 treesize of output 27815 [2023-04-02 21:53:43,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:53:43,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23996 treesize of output 22964 [2023-04-02 21:53:49,609 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 416 treesize of output 400 [2023-04-02 21:53:56,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 21:53:57,857 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 206 treesize of output 198 [2023-04-02 21:53:59,065 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 98 treesize of output 94 [2023-04-02 21:54:00,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 21:54:03,004 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 206 treesize of output 198 [2023-04-02 21:54:04,439 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 277 treesize of output 265 [2023-04-02 21:54:39,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 21:54:39,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 21:54:40,052 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