java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:57:04,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:57:04,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:57:04,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:57:04,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:57:04,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:57:04,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:57:04,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:57:04,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:57:04,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:57:04,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:57:04,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:57:04,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:57:04,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:57:04,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:57:04,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:57:04,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:57:04,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:57:04,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:57:04,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:57:04,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:57:04,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:57:04,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:57:04,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:57:04,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:57:04,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:57:04,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:57:04,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:57:04,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:57:04,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:57:04,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:57:04,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:57:04,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:57:04,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:57:04,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:57:04,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:57:04,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:57:04,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:57:04,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:57:04,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:57:04,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:57:04,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:57:04,914 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:57:04,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:57:04,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:57:04,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:57:04,916 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:57:04,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:57:04,917 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:57:04,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:57:04,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:57:04,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:57:04,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:57:04,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:57:04,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:57:04,918 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:57:04,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:57:04,919 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:57:04,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:57:04,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:57:04,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:57:04,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:57:04,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:57:04,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:57:04,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:57:04,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:57:04,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:57:04,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:57:04,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:57:04,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:57:04,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:57:05,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:57:05,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:57:05,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:57:05,230 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:57:05,230 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:57:05,231 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-10-13 22:57:05,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920c57e08/c96cac7fb6754e80a7eefa1431892b84/FLAG51e5e73e2 [2019-10-13 22:57:05,868 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:57:05,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-10-13 22:57:05,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920c57e08/c96cac7fb6754e80a7eefa1431892b84/FLAG51e5e73e2 [2019-10-13 22:57:06,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920c57e08/c96cac7fb6754e80a7eefa1431892b84 [2019-10-13 22:57:06,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:57:06,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:57:06,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:57:06,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:57:06,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:57:06,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4d3905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06, skipping insertion in model container [2019-10-13 22:57:06,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,190 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:57:06,230 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:57:06,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:57:06,686 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:57:06,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:57:06,789 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:57:06,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06 WrapperNode [2019-10-13 22:57:06,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:57:06,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:57:06,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:57:06,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:57:06,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... [2019-10-13 22:57:06,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:57:06,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:57:06,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:57:06,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:57:06,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:57:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:57:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:57:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:57:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:57:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:57:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 22:57:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-13 22:57:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-13 22:57:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2019-10-13 22:57:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:57:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:57:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:57:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:57:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:57:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:57:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:57:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:57:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:57:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:57:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:57:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:57:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:57:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:57:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:57:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:57:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:57:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:57:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:57:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:57:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:57:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:57:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:57:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:57:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:57:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:57:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:57:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:57:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:57:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:57:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:57:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:57:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:57:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:57:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:57:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:57:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:57:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:57:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:57:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:57:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:57:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:57:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:57:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:57:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:57:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:57:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:57:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:57:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:57:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:57:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:57:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:57:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:57:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:57:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:57:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:57:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:57:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:57:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:57:07,325 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:57:07,596 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:57:07,596 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 22:57:07,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:57:07 BoogieIcfgContainer [2019-10-13 22:57:07,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:57:07,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:57:07,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:57:07,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:57:07,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:57:06" (1/3) ... [2019-10-13 22:57:07,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22392b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:57:07, skipping insertion in model container [2019-10-13 22:57:07,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:06" (2/3) ... [2019-10-13 22:57:07,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22392b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:57:07, skipping insertion in model container [2019-10-13 22:57:07,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:57:07" (3/3) ... [2019-10-13 22:57:07,616 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2019-10-13 22:57:07,626 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:57:07,637 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:57:07,649 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:57:07,705 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:57:07,705 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:57:07,705 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:57:07,706 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:57:07,706 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:57:07,706 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:57:07,706 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:57:07,706 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:57:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-10-13 22:57:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 22:57:07,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:57:07,737 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:57:07,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:57:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:57:07,745 INFO L82 PathProgramCache]: Analyzing trace with hash 219491985, now seen corresponding path program 1 times [2019-10-13 22:57:07,752 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:57:07,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272067303] [2019-10-13 22:57:07,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:07,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:07,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:57:08,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272067303] [2019-10-13 22:57:08,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:57:08,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:57:08,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557877179] [2019-10-13 22:57:08,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:57:08,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:57:08,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:57:08,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:57:08,099 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2019-10-13 22:57:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:57:08,199 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2019-10-13 22:57:08,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:57:08,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-13 22:57:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:57:08,210 INFO L225 Difference]: With dead ends: 73 [2019-10-13 22:57:08,211 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 22:57:08,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:57:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 22:57:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-10-13 22:57:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-13 22:57:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-13 22:57:08,259 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2019-10-13 22:57:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:57:08,260 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-13 22:57:08,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:57:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-13 22:57:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 22:57:08,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:57:08,262 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:57:08,263 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:57:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:57:08,263 INFO L82 PathProgramCache]: Analyzing trace with hash -979574963, now seen corresponding path program 1 times [2019-10-13 22:57:08,264 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:57:08,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588619144] [2019-10-13 22:57:08,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:08,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:08,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:57:08,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588619144] [2019-10-13 22:57:08,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557054668] [2019-10-13 22:57:08,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:57:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:08,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:57:08,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:57:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:57:08,598 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:57:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:57:08,722 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213654599] [2019-10-13 22:57:08,748 INFO L162 IcfgInterpreter]: Started Sifa with 25 locations of interest [2019-10-13 22:57:08,749 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:57:08,755 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:57:08,763 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:57:08,764 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:57:08,897 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:57:09,080 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:57:10,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:57:10,108 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 22:57:10,119 INFO L168 Benchmark]: Toolchain (without parser) took 3942.50 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 101.1 MB in the beginning and 116.1 MB in the end (delta: -15.1 MB). Peak memory consumption was 94.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:10,125 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 22:57:10,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.86 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 100.9 MB in the beginning and 169.1 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:10,126 INFO L168 Benchmark]: Boogie Preprocessor took 85.62 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 166.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:10,127 INFO L168 Benchmark]: RCFGBuilder took 714.66 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 113.4 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:10,128 INFO L168 Benchmark]: TraceAbstraction took 2518.07 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 113.4 MB in the beginning and 116.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:10,138 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.86 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 100.9 MB in the beginning and 169.1 MB in the end (delta: -68.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.62 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 166.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 714.66 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 113.4 MB in the end (delta: 53.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2518.07 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 113.4 MB in the beginning and 116.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...