/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 EqDomain -i ../sv-benchmarks/c/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:54:21,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:54:21,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:54:21,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:54:21,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:54:21,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:54:21,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:54:21,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:54:21,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:54:21,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:54:21,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:54:21,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:54:21,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:54:21,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:54:21,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:54:21,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:54:21,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:54:21,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:54:21,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:54:21,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:54:21,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:54:21,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:54:21,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:54:21,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:54:21,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 10:54:21,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 10:54:21,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 10:54:21,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 10:54:21,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 10:54:21,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 10:54:21,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 10:54:21,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 10:54:21,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 10:54:21,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 10:54:21,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 10:54:21,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 10:54:21,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 10:54:21,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 10:54:21,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:54:21,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:54:21,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:54:21,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 10:54:21,392 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:54:21,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:54:21,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:54:21,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:54:21,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:54:21,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:54:21,393 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:54:21,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:54:21,394 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:54:21,395 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:54:21,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:54:21,395 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:54:21,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:54:21,395 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:54:21,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:54:21,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:54:21,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:54:21,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:54:21,398 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:54:21,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:54:21,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:54:21,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:54:21,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:54:21,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:54:21,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:54:21,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:54:21,659 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:54:21,660 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:54:21,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2023-04-01 10:54:22,890 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:54:23,088 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:54:23,089 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2023-04-01 10:54:23,103 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6465bbe/ee27336976144993976f52b80954ee61/FLAGdfaa4cbad [2023-04-01 10:54:23,116 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6465bbe/ee27336976144993976f52b80954ee61 [2023-04-01 10:54:23,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:54:23,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:54:23,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:54:23,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:54:23,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:54:23,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76711031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23, skipping insertion in model container [2023-04-01 10:54:23,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:54:23,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:54:23,421 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22384,22397] [2023-04-01 10:54:23,430 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22614,22627] [2023-04-01 10:54:23,435 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22989,23002] [2023-04-01 10:54:23,435 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23053,23066] [2023-04-01 10:54:23,436 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23184,23197] [2023-04-01 10:54:23,437 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23248,23261] [2023-04-01 10:54:23,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:54:23,452 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:54:23,480 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22384,22397] [2023-04-01 10:54:23,482 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22614,22627] [2023-04-01 10:54:23,485 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22989,23002] [2023-04-01 10:54:23,486 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23053,23066] [2023-04-01 10:54:23,486 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23184,23197] [2023-04-01 10:54:23,487 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23248,23261] [2023-04-01 10:54:23,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:54:23,513 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:54:23,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23 WrapperNode [2023-04-01 10:54:23,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:54:23,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:54:23,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:54:23,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:54:23,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:54:23,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:54:23,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:54:23,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:54:23,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (1/1) ... [2023-04-01 10:54:23,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:54:23,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:54:23,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 10:54:23,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 10:54:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:54:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:54:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:54:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-01 10:54:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-01 10:54:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-01 10:54:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-01 10:54:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-01 10:54:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-01 10:54:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:54:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-01 10:54:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-01 10:54:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-01 10:54:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-01 10:54:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 10:54:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:54:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:54:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:54:23,928 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:54:23,933 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:54:24,304 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:54:24,410 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:54:24,411 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-04-01 10:54:24,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:54:24 BoogieIcfgContainer [2023-04-01 10:54:24,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:54:24,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:54:24,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:54:24,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:54:24,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:54:23" (1/3) ... [2023-04-01 10:54:24,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d1f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:54:24, skipping insertion in model container [2023-04-01 10:54:24,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:54:23" (2/3) ... [2023-04-01 10:54:24,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592d1f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:54:24, skipping insertion in model container [2023-04-01 10:54:24,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:54:24" (3/3) ... [2023-04-01 10:54:24,420 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2023-04-01 10:54:24,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:54:24,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-01 10:54:24,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:54:24,492 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;@c6bb86d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:54:24,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-01 10:54:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 45 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 10:54:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-04-01 10:54:24,500 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:54:24,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:54:24,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 10:54:24,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:54:24,505 INFO L85 PathProgramCache]: Analyzing trace with hash -67957243, now seen corresponding path program 1 times [2023-04-01 10:54:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:54:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760496330] [2023-04-01 10:54:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:54:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:54:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:54:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:54:24,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:54:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760496330] [2023-04-01 10:54:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760496330] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:54:24,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:54:24,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 10:54:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373978875] [2023-04-01 10:54:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:54:24,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 10:54:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:54:24,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 10:54:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:54:24,720 INFO L87 Difference]: Start difference. First operand has 50 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 45 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:54:24,793 INFO L93 Difference]: Finished difference Result 93 states and 145 transitions. [2023-04-01 10:54:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 10:54:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-04-01 10:54:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:54:24,804 INFO L225 Difference]: With dead ends: 93 [2023-04-01 10:54:24,804 INFO L226 Difference]: Without dead ends: 46 [2023-04-01 10:54:24,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:54:24,812 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:54:24,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:54:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-04-01 10:54:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-04-01 10:54:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 42 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-04-01 10:54:24,850 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2023-04-01 10:54:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:54:24,850 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-04-01 10:54:24,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-04-01 10:54:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-01 10:54:24,853 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:54:24,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:54:24,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:54:24,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 10:54:24,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:54:24,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2124763425, now seen corresponding path program 1 times [2023-04-01 10:54:24,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:54:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518527681] [2023-04-01 10:54:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:54:24,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:54:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:54:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 10:54:24,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:54:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518527681] [2023-04-01 10:54:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518527681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:54:24,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:54:24,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 10:54:24,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360994550] [2023-04-01 10:54:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:54:24,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 10:54:24,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:54:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 10:54:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:54:24,933 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:54:25,003 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2023-04-01 10:54:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 10:54:25,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-01 10:54:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:54:25,005 INFO L225 Difference]: With dead ends: 88 [2023-04-01 10:54:25,005 INFO L226 Difference]: Without dead ends: 49 [2023-04-01 10:54:25,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 10:54:25,006 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:54:25,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:54:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-01 10:54:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-04-01 10:54:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2023-04-01 10:54:25,013 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2023-04-01 10:54:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:54:25,013 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2023-04-01 10:54:25,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2023-04-01 10:54:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-01 10:54:25,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:54:25,014 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:54:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 10:54:25,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 10:54:25,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:54:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash 939503686, now seen corresponding path program 1 times [2023-04-01 10:54:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:54:25,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936362206] [2023-04-01 10:54:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:54:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:54:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:54:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 10:54:25,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:54:25,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936362206] [2023-04-01 10:54:25,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936362206] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:54:25,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:54:25,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 10:54:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528393983] [2023-04-01 10:54:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:54:25,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 10:54:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:54:25,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 10:54:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 10:54:25,149 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:54:25,248 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2023-04-01 10:54:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 10:54:25,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-01 10:54:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:54:25,249 INFO L225 Difference]: With dead ends: 76 [2023-04-01 10:54:25,249 INFO L226 Difference]: Without dead ends: 74 [2023-04-01 10:54:25,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 10:54:25,251 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 102 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 10:54:25,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 10:54:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-04-01 10:54:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 46. [2023-04-01 10:54:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.236842105263158) internal successors, (47), 42 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2023-04-01 10:54:25,258 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 12 [2023-04-01 10:54:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:54:25,258 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2023-04-01 10:54:25,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 10:54:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2023-04-01 10:54:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-01 10:54:25,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:54:25,259 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:54:25,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 10:54:25,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 10:54:25,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:54:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1396302182, now seen corresponding path program 1 times [2023-04-01 10:54:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:54:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760665287] [2023-04-01 10:54:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:54:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:54:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:54:25,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 10:54:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:54:25,379 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 10:54:25,380 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 10:54:25,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-04-01 10:54:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-04-01 10:54:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-04-01 10:54:25,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-04-01 10:54:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-04-01 10:54:25,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-04-01 10:54:25,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 10:54:25,386 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-01 10:54:25,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 10:54:25,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 10:54:25 BoogieIcfgContainer [2023-04-01 10:54:25,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 10:54:25,422 INFO L158 Benchmark]: Toolchain (without parser) took 2303.42ms. Allocated memory is still 270.5MB. Free memory was 225.8MB in the beginning and 164.6MB in the end (delta: 61.2MB). Peak memory consumption was 62.1MB. Max. memory is 8.0GB. [2023-04-01 10:54:25,422 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:54:25,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.87ms. Allocated memory is still 270.5MB. Free memory was 225.4MB in the beginning and 206.9MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-01 10:54:25,423 INFO L158 Benchmark]: Boogie Preprocessor took 58.09ms. Allocated memory is still 270.5MB. Free memory was 206.9MB in the beginning and 203.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-01 10:54:25,423 INFO L158 Benchmark]: RCFGBuilder took 840.20ms. Allocated memory is still 270.5MB. Free memory was 203.8MB in the beginning and 239.1MB in the end (delta: -35.3MB). Peak memory consumption was 42.1MB. Max. memory is 8.0GB. [2023-04-01 10:54:25,424 INFO L158 Benchmark]: TraceAbstraction took 1006.98ms. Allocated memory is still 270.5MB. Free memory was 238.6MB in the beginning and 164.6MB in the end (delta: 73.9MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-04-01 10:54:25,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 393.87ms. Allocated memory is still 270.5MB. Free memory was 225.4MB in the beginning and 206.9MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.09ms. Allocated memory is still 270.5MB. Free memory was 206.9MB in the beginning and 203.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 840.20ms. Allocated memory is still 270.5MB. Free memory was 203.8MB in the beginning and 239.1MB in the end (delta: -35.3MB). Peak memory consumption was 42.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1006.98ms. Allocated memory is still 270.5MB. Free memory was 238.6MB in the beginning and 164.6MB in the end (delta: 73.9MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1038]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; VAL [head={-1:0}, marked=0, x={-1:0}] [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 VAL [head={-1:0}, marked=1, x={-2:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head VAL [head={-1:0}, marked=1, x={-1:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, marked=1, x={-1:0}] [L1028] marked = 0 VAL [head={-1:0}, marked=0, x={-1:0}] [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, marked=0, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1, x->next={-2:0}, x->next={-2:0}, x={-1:0}] [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, marked=0, x->next != ((void*)0) && __VERIFIER_nondet_int()=1, x->next={-2:0}, x={-1:0}] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data VAL [head={-1:0}, marked=0, x->data=1, x={-2:0}] [L1038] COND TRUE !(x->data != 1) [L1038] reach_error() VAL [head={-1:0}, marked=0, x={-2:0}] - UnprovableResult [Line: 1027]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1069]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1070]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 123 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 10:54:25,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...