/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-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 10:53:47,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 10:53:47,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 10:53:47,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 10:53:47,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 10:53:47,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 10:53:47,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 10:53:47,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 10:53:47,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 10:53:47,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 10:53:47,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 10:53:47,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 10:53:47,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 10:53:47,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 10:53:47,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 10:53:47,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 10:53:47,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 10:53:47,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 10:53:47,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 10:53:47,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 10:53:47,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 10:53:47,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 10:53:47,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 10:53:47,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 10:53:47,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 10:53:47,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 10:53:47,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 10:53:47,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 10:53:47,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 10:53:47,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 10:53:47,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 10:53:47,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 10:53:47,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 10:53:47,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 10:53:47,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 10:53:47,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 10:53:47,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 10:53:47,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 10:53:47,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 10:53:47,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 10:53:47,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 10:53:47,508 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 10:53:47,541 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 10:53:47,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 10:53:47,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 10:53:47,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 10:53:47,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 10:53:47,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 10:53:47,543 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 10:53:47,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 10:53:47,544 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 10:53:47,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 10:53:47,545 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 10:53:47,545 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 10:53:47,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 10:53:47,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 10:53:47,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 10:53:47,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 10:53:47,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 10:53:47,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 10:53:47,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 10:53:47,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 10:53:47,547 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 10:53:47,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 10:53:47,547 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 10:53:47,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 10:53:47,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 10:53:47,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 10:53:47,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:53:47,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 10:53:47,548 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 10:53:47,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 10:53:47,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 10:53:47,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 10:53:47,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 10:53:47,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 10:53:47,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 10:53:47,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 10:53:47,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 10:53:47,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 10:53:47,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 10:53:47,787 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 10:53:47,787 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 10:53:47,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-optional-2.i [2023-04-01 10:53:48,964 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 10:53:49,214 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 10:53:49,214 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-optional-2.i [2023-04-01 10:53:49,224 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1617e6e01/3054d5c49ba54dc688521371a6ba18e6/FLAGb88523783 [2023-04-01 10:53:49,239 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1617e6e01/3054d5c49ba54dc688521371a6ba18e6 [2023-04-01 10:53:49,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 10:53:49,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 10:53:49,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 10:53:49,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 10:53:49,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 10:53:49,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343f160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49, skipping insertion in model container [2023-04-01 10:53:49,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 10:53:49,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 10:53:49,537 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-optional-2.i[22706,22719] [2023-04-01 10:53:49,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:53:49,559 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 10:53:49,619 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-optional-2.i[22706,22719] [2023-04-01 10:53:49,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 10:53:49,648 INFO L208 MainTranslator]: Completed translation [2023-04-01 10:53:49,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49 WrapperNode [2023-04-01 10:53:49,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 10:53:49,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 10:53:49,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 10:53:49,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 10:53:49,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 10:53:49,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 10:53:49,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 10:53:49,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 10:53:49,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (1/1) ... [2023-04-01 10:53:49,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 10:53:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 10:53:49,758 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 10:53:49,761 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 10:53:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 10:53:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 10:53:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 10:53:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-01 10:53:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-01 10:53:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-01 10:53:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-01 10:53:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-01 10:53:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-01 10:53:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-01 10:53:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 10:53:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-01 10:53:49,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-01 10:53:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-01 10:53:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-01 10:53:49,799 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 10:53:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 10:53:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 10:53:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 10:53:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 10:53:50,047 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 10:53:50,049 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 10:53:50,336 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 10:53:50,493 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 10:53:50,493 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 10:53:50,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:53:50 BoogieIcfgContainer [2023-04-01 10:53:50,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 10:53:50,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 10:53:50,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 10:53:50,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 10:53:50,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:53:49" (1/3) ... [2023-04-01 10:53:50,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d5358c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:53:50, skipping insertion in model container [2023-04-01 10:53:50,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:53:49" (2/3) ... [2023-04-01 10:53:50,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d5358c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:53:50, skipping insertion in model container [2023-04-01 10:53:50,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:53:50" (3/3) ... [2023-04-01 10:53:50,506 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2023-04-01 10:53:50,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 10:53:50,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 10:53:50,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 10:53:50,570 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;@59acd8cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 10:53:50,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 10:53:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 10:53:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 10:53:50,579 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:50,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:50,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:50,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1513719450, now seen corresponding path program 1 times [2023-04-01 10:53:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:50,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607705158] [2023-04-01 10:53:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 10:53:50,851 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 10:53:50,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 10:53:50,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607705158] [2023-04-01 10:53:50,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607705158] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 10:53:50,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 10:53:50,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 10:53:50,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504037850] [2023-04-01 10:53:50,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 10:53:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 10:53:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 10:53:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 10:53:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 10:53:50,886 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 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 4.0) internal successors, (8), 2 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 10:53:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 10:53:51,056 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2023-04-01 10:53:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 10:53:51,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 11 [2023-04-01 10:53:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 10:53:51,064 INFO L225 Difference]: With dead ends: 31 [2023-04-01 10:53:51,065 INFO L226 Difference]: Without dead ends: 15 [2023-04-01 10:53:51,067 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 10:53:51,070 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 10:53:51,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 10:53:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-04-01 10:53:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-04-01 10:53:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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 10:53:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-04-01 10:53:51,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-04-01 10:53:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 10:53:51,097 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-04-01 10:53:51,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:53:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-04-01 10:53:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-01 10:53:51,098 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 10:53:51,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 10:53:51,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 10:53:51,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 10:53:51,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 10:53:51,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1027044761, now seen corresponding path program 1 times [2023-04-01 10:53:51,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 10:53:51,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972679669] [2023-04-01 10:53:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 10:53:51,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 10:53:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:53:51,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 10:53:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 10:53:51,352 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 10:53:51,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 10:53:51,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 10:53:51,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 10:53:51,358 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 10:53:51,364 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 10:53:51,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 10:53:51 BoogieIcfgContainer [2023-04-01 10:53:51,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 10:53:51,388 INFO L158 Benchmark]: Toolchain (without parser) took 2146.15ms. Allocated memory is still 230.7MB. Free memory was 199.6MB in the beginning and 187.5MB in the end (delta: 12.1MB). Peak memory consumption was 114.3MB. Max. memory is 8.0GB. [2023-04-01 10:53:51,389 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 170.9MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 10:53:51,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.93ms. Allocated memory is still 230.7MB. Free memory was 199.0MB in the beginning and 181.7MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-01 10:53:51,392 INFO L158 Benchmark]: Boogie Preprocessor took 74.50ms. Allocated memory is still 230.7MB. Free memory was 181.7MB in the beginning and 179.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 10:53:51,393 INFO L158 Benchmark]: RCFGBuilder took 772.72ms. Allocated memory is still 230.7MB. Free memory was 179.1MB in the beginning and 141.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-04-01 10:53:51,395 INFO L158 Benchmark]: TraceAbstraction took 887.55ms. Allocated memory is still 230.7MB. Free memory was 140.3MB in the beginning and 187.5MB in the end (delta: -47.1MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2023-04-01 10:53:51,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 170.9MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 405.93ms. Allocated memory is still 230.7MB. Free memory was 199.0MB in the beginning and 181.7MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 74.50ms. Allocated memory is still 230.7MB. Free memory was 181.7MB in the beginning and 179.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 772.72ms. Allocated memory is still 230.7MB. Free memory was 179.1MB in the beginning and 141.4MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 887.55ms. Allocated memory is still 230.7MB. Free memory was 140.3MB in the beginning and 187.5MB in the end (delta: -47.1MB). Peak memory consumption was 55.6MB. 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: 1009]: 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] COND TRUE __VERIFIER_nondet_int() [L1000] head->data = 2 [L1000] head->opt = malloc(sizeof(SLL)) [L1000] EXPR head->opt [L1000] head->opt->next = ((void*)0) [L1001] SLL* x = head; VAL [__VERIFIER_nondet_int()=49, head->opt={54:55}, head={-2:0}, malloc(sizeof(SLL))={50:58}, x={-2:0}] [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head VAL [__VERIFIER_nondet_int()=49, head->opt={54:55}, head={-2:0}, malloc(sizeof(SLL))={50:58}, x={-2:0}] [L1007] COND TRUE x != ((void*)0) VAL [__VERIFIER_nondet_int()=49, head->opt={54:55}, head={-2:0}, malloc(sizeof(SLL))={50:58}, x={-2:0}] [L1009] EXPR x->data [L1009] EXPR x->data == 2 && x->opt == x [L1009] EXPR x->opt [L1009] EXPR x->data == 2 && x->opt == x VAL [__VERIFIER_nondet_int()=49, head->opt={54:55}, head={-2:0}, malloc(sizeof(SLL))={50:58}, x->data == 2 && x->opt == x=0, x->data=2, x->opt={-1:0}, x={-2:0}] [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] reach_error() VAL [__VERIFIER_nondet_int()=49, head->opt={54:55}, head={-2:0}, malloc(sizeof(SLL))={50:58}, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 10:53:51,418 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...