/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:37:25,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:37:25,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:37:25,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:37:25,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:37:25,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:37:25,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:37:25,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:37:25,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:37:25,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:37:25,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:37:25,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:37:25,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:37:25,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:37:25,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:37:25,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:37:25,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:37:25,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:37:25,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:37:25,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:37:25,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:37:25,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:37:25,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:37:25,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:37:25,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:37:25,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:37:25,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:37:25,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:37:25,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:37:25,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:37:25,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:37:25,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:37:25,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:37:25,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:37:25,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:37:25,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:37:25,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:37:25,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:37:25,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:37:25,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:37:25,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:37:25,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 21:37:25,821 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:37:25,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:37:25,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:37:25,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:37:25,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:37:25,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:37:25,824 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:37:25,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:37:25,824 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:37:25,824 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:37:25,825 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:37:25,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:37:25,825 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:37:25,825 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:37:25,825 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:37:25,825 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:37:25,825 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:37:25,826 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:37:25,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:37:25,826 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:37:25,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:37:25,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:37:25,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:37:25,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:37:25,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:37:25,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:37:25,827 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:37:25,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:37:25,828 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:37:25,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:37:25,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:37:25,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:37:25,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:37:25,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:37:25,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:37:26,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:37:26,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:37:26,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:37:26,090 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:37:26,090 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:37:26,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-1.i [2023-04-02 21:37:27,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:37:27,481 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:37:27,482 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i [2023-04-02 21:37:27,493 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f71f05ff/51c37d76d8e5401a9be739e9c36cd3d8/FLAGadc28a87b [2023-04-02 21:37:27,508 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f71f05ff/51c37d76d8e5401a9be739e9c36cd3d8 [2023-04-02 21:37:27,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:37:27,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:37:27,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:37:27,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:37:27,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:37:27,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca93925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27, skipping insertion in model container [2023-04-02 21:37:27,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:37:27,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:37:27,800 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2023-04-02 21:37:27,812 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2023-04-02 21:37:27,815 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2023-04-02 21:37:27,818 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2023-04-02 21:37:27,819 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2023-04-02 21:37:27,820 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2023-04-02 21:37:27,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:37:27,833 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:37:27,876 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2023-04-02 21:37:27,877 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2023-04-02 21:37:27,878 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2023-04-02 21:37:27,879 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2023-04-02 21:37:27,880 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2023-04-02 21:37:27,881 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2023-04-02 21:37:27,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:37:27,910 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:37:27,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27 WrapperNode [2023-04-02 21:37:27,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:37:27,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:37:27,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:37:27,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:37:27,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:37:27,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:37:27,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:37:27,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:37:27,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (1/1) ... [2023-04-02 21:37:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:37:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:37:27,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:37:27,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:37:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:37:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:37:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:37:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:37:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 21:37:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 21:37:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 21:37:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 21:37:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 21:37:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 21:37:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 21:37:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 21:37:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 21:37:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 21:37:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 21:37:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 21:37:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 21:37:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 21:37:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 21:37:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 21:37:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 21:37:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 21:37:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 21:37:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 21:37:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 21:37:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 21:37:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 21:37:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 21:37:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 21:37:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 21:37:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 21:37:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 21:37:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 21:37:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 21:37:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 21:37:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 21:37:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 21:37:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 21:37:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 21:37:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 21:37:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 21:37:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 21:37:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 21:37:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 21:37:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 21:37:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 21:37:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 21:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 21:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 21:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 21:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 21:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:37:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 21:37:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 21:37:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:37:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:37:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:37:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:37:28,297 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:37:28,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:37:28,531 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:37:28,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:37:28,552 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-04-02 21:37:28,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:37:28 BoogieIcfgContainer [2023-04-02 21:37:28,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:37:28,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:37:28,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:37:28,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:37:28,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:37:27" (1/3) ... [2023-04-02 21:37:28,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecd7fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:37:28, skipping insertion in model container [2023-04-02 21:37:28,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:27" (2/3) ... [2023-04-02 21:37:28,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecd7fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:37:28, skipping insertion in model container [2023-04-02 21:37:28,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:37:28" (3/3) ... [2023-04-02 21:37:28,563 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2023-04-02 21:37:28,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:37:28,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-02 21:37:28,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:37:28,629 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;@745d87c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:37:28,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-02 21:37:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 42 states have internal predecessors, (66), 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) [2023-04-02 21:37:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-04-02 21:37:28,638 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:28,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:28,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 21:37:28,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1346572805, now seen corresponding path program 1 times [2023-04-02 21:37:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541043475] [2023-04-02 21:37:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:28,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:28,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541043475] [2023-04-02 21:37:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541043475] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:37:28,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:37:28,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:37:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415192512] [2023-04-02 21:37:28,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:37:28,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:37:28,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:37:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:37:28,901 INFO L87 Difference]: Start difference. First operand has 47 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 42 states have internal predecessors, (66), 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) [2023-04-02 21:37:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:28,930 INFO L93 Difference]: Finished difference Result 89 states and 135 transitions. [2023-04-02 21:37:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:37:28,933 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 [2023-04-02 21:37:28,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:28,940 INFO L225 Difference]: With dead ends: 89 [2023-04-02 21:37:28,940 INFO L226 Difference]: Without dead ends: 42 [2023-04-02 21:37:28,944 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 [2023-04-02 21:37:28,949 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:28,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:37:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-02 21:37:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-04-02 21:37:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 38 states have internal predecessors, (41), 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) [2023-04-02 21:37:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2023-04-02 21:37:28,984 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 9 [2023-04-02 21:37:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:28,984 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2023-04-02 21:37:28,984 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) [2023-04-02 21:37:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2023-04-02 21:37:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-04-02 21:37:28,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:28,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:28,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:37:28,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 21:37:28,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1345806184, now seen corresponding path program 1 times [2023-04-02 21:37:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:28,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815918279] [2023-04-02 21:37:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:28,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:29,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:29,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815918279] [2023-04-02 21:37:29,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815918279] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:37:29,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:37:29,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 21:37:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379014215] [2023-04-02 21:37:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:37:29,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 21:37:29,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:29,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 21:37:29,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:37:29,134 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-04-02 21:37:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:29,188 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-04-02 21:37:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 21:37:29,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2023-04-02 21:37:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:29,190 INFO L225 Difference]: With dead ends: 42 [2023-04-02 21:37:29,190 INFO L226 Difference]: Without dead ends: 40 [2023-04-02 21:37:29,191 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 [2023-04-02 21:37:29,192 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:29,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:37:29,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-02 21:37:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-04-02 21:37:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 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) [2023-04-02 21:37:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2023-04-02 21:37:29,206 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2023-04-02 21:37:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:29,206 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2023-04-02 21:37:29,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-04-02 21:37:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2023-04-02 21:37:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 21:37:29,207 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:29,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:29,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:37:29,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 21:37:29,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1229724763, now seen corresponding path program 1 times [2023-04-02 21:37:29,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:29,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530367361] [2023-04-02 21:37:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:29,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:29,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530367361] [2023-04-02 21:37:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530367361] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:37:29,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:37:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:37:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346233978] [2023-04-02 21:37:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:37:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:37:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:37:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:37:29,394 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2023-04-02 21:37:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:29,464 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-04-02 21:37:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:37:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2023-04-02 21:37:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:29,467 INFO L225 Difference]: With dead ends: 66 [2023-04-02 21:37:29,467 INFO L226 Difference]: Without dead ends: 64 [2023-04-02 21:37:29,467 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 [2023-04-02 21:37:29,468 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:29,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:37:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-04-02 21:37:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2023-04-02 21:37:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 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) [2023-04-02 21:37:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-04-02 21:37:29,474 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2023-04-02 21:37:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:29,474 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-04-02 21:37:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2023-04-02 21:37:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-04-02 21:37:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 21:37:29,475 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:29,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:29,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 21:37:29,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 21:37:29,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -638342380, now seen corresponding path program 1 times [2023-04-02 21:37:29,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:29,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647441181] [2023-04-02 21:37:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:37:29,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 21:37:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 21:37:29,568 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 21:37:29,569 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 21:37:29,569 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-04-02 21:37:29,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-04-02 21:37:29,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-04-02 21:37:29,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-04-02 21:37:29,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-04-02 21:37:29,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-04-02 21:37:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 21:37:29,575 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-02 21:37:29,578 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 21:37:29,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:37:29 BoogieIcfgContainer [2023-04-02 21:37:29,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 21:37:29,592 INFO L158 Benchmark]: Toolchain (without parser) took 2081.04ms. Allocated memory is still 261.1MB. Free memory was 223.5MB in the beginning and 203.4MB in the end (delta: 20.0MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. [2023-04-02 21:37:29,592 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory was 125.6MB in the beginning and 125.4MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:37:29,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.12ms. Allocated memory is still 261.1MB. Free memory was 223.5MB in the beginning and 205.5MB in the end (delta: 18.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-02 21:37:29,593 INFO L158 Benchmark]: Boogie Preprocessor took 52.86ms. Allocated memory is still 261.1MB. Free memory was 205.5MB in the beginning and 203.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 21:37:29,593 INFO L158 Benchmark]: RCFGBuilder took 589.00ms. Allocated memory is still 261.1MB. Free memory was 202.5MB in the beginning and 179.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-04-02 21:37:29,594 INFO L158 Benchmark]: TraceAbstraction took 1035.71ms. Allocated memory is still 261.1MB. Free memory was 178.9MB in the beginning and 203.4MB in the end (delta: -24.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 21:37:29,595 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 178.3MB. Free memory was 125.6MB in the beginning and 125.4MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 397.12ms. Allocated memory is still 261.1MB. Free memory was 223.5MB in the beginning and 205.5MB in the end (delta: 18.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.86ms. Allocated memory is still 261.1MB. Free memory was 205.5MB in the beginning and 203.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 589.00ms. Allocated memory is still 261.1MB. Free memory was 202.5MB in the beginning and 179.9MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1035.71ms. Allocated memory is still 261.1MB. Free memory was 178.9MB in the beginning and 203.4MB in the end (delta: -24.5MB). There was no memory consumed. 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: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head VAL [head={-1:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, x->data=1, x={-1:0}] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, x->data=1, x={-1:0}] [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 1016]: 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: 1024]: 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: 1028]: 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: 1033]: 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: 1043]: 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, 49 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 161 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 111 mSDtfsCounter, 46 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=47occurred 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, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2023-04-02 21:37:29,613 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...