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_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:57:02,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:57:02,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:57:02,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:57:02,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:57:02,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:57:02,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:57:02,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:57:02,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:57:02,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:57:02,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:57:02,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:57:02,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:57:02,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:57:02,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:57:02,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:57:02,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:57:02,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:57:02,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:57:02,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:57:02,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:57:02,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:57:02,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:57:02,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:57:02,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:57:02,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:57:02,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:57:02,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:57:02,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:57:02,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:57:02,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:57:02,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:57:02,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:57:02,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:57:02,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:57:02,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:57:02,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:57:02,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:57:02,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:57:02,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:57:02,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:57:02,651 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 22:57:02,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:57:02,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:57:02,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:57:02,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:57:02,667 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:57:02,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:57:02,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:57:02,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:57:02,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:57:02,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:57:02,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:57:02,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:57:02,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:57:02,669 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:57:02,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:57:02,669 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:57:02,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:57:02,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:57:02,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:57:02,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:57:02,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:57:02,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:57:02,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:57:02,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:57:02,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:57:02,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:57:02,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:57:02,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:57:02,672 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 22:57:02,970 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:57:02,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:57:02,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:57:02,989 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:57:02,989 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:57:02,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-10-13 22:57:03,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e327e5c76/234e341167974113a0461db058a82926/FLAG247a8f48d [2019-10-13 22:57:03,650 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:57:03,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-10-13 22:57:03,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e327e5c76/234e341167974113a0461db058a82926/FLAG247a8f48d [2019-10-13 22:57:03,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e327e5c76/234e341167974113a0461db058a82926 [2019-10-13 22:57:03,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:57:03,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:57:03,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:57:03,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:57:03,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:57:03,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e12d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03, skipping insertion in model container [2019-10-13 22:57:03,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,952 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:57:04,005 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:57:04,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:57:04,467 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:57:04,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:57:04,612 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:57:04,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04 WrapperNode [2019-10-13 22:57:04,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:57:04,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:57:04,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:57:04,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:57:04,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (1/1) ... [2019-10-13 22:57:04,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:57:04,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:57:04,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:57:04,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:57:04,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (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 22:57:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:57:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:57:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:57:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:57:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:57:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 22:57:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-13 22:57:04,761 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-13 22:57:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-13 22:57:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:57:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:57:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:57:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:57:04,762 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:57:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:57:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:57:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:57:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:57:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:57:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:57:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:57:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:57:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:57:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:57:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:57:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:57:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:57:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:57:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:57:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:57:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:57:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:57:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:57:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:57:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:57:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:57:04,766 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:57:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:57:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:57:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:57:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:57:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:57:04,767 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:57:04,768 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:57:04,769 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:57:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:57:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:57:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:57:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:57:04,770 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:57:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:57:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:57:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:57:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:57:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:57:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:57:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:57:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:57:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:57:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:57:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:57:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:57:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:57:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:57:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:57:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:57:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:57:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:57:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:57:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:57:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:57:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:57:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:57:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:57:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:57:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 22:57:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:57:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:57:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:57:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:57:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:57:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:57:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:57:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:57:05,173 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:57:05,451 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:57:05,452 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:57:05,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:57:05 BoogieIcfgContainer [2019-10-13 22:57:05,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:57:05,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:57:05,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:57:05,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:57:05,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:57:03" (1/3) ... [2019-10-13 22:57:05,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4971f376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:57:05, skipping insertion in model container [2019-10-13 22:57:05,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:04" (2/3) ... [2019-10-13 22:57:05,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4971f376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:57:05, skipping insertion in model container [2019-10-13 22:57:05,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:57:05" (3/3) ... [2019-10-13 22:57:05,471 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2019-10-13 22:57:05,482 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:57:05,492 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:57:05,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:57:05,534 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:57:05,534 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:57:05,534 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:57:05,535 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:57:05,535 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:57:05,535 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:57:05,535 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:57:05,535 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:57:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-10-13 22:57:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 22:57:05,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:57:05,564 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, 1, 1, 1] [2019-10-13 22:57:05,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:57:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:57:05,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2115306708, now seen corresponding path program 1 times [2019-10-13 22:57:05,581 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:57:05,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841549191] [2019-10-13 22:57:05,582 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:05,582 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:05,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:05,851 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 22:57:05,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841549191] [2019-10-13 22:57:05,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:57:05,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:57:05,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86532788] [2019-10-13 22:57:05,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:57:05,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:57:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:57:05,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:57:05,879 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2019-10-13 22:57:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:57:05,983 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2019-10-13 22:57:05,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:57:05,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-13 22:57:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:57:05,994 INFO L225 Difference]: With dead ends: 89 [2019-10-13 22:57:05,994 INFO L226 Difference]: Without dead ends: 39 [2019-10-13 22:57:05,998 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 22:57:06,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-13 22:57:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-10-13 22:57:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 22:57:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-13 22:57:06,041 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-13 22:57:06,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:57:06,041 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-13 22:57:06,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:57:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-13 22:57:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 22:57:06,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:57:06,044 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, 1, 1, 1] [2019-10-13 22:57:06,044 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:57:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:57:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash -263779731, now seen corresponding path program 1 times [2019-10-13 22:57:06,045 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:57:06,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938189049] [2019-10-13 22:57:06,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:06,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:06,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:06,218 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 22:57:06,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938189049] [2019-10-13 22:57:06,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403768708] [2019-10-13 22:57:06,219 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 22:57:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:06,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:57:06,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:57:06,428 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 22:57:06,428 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:57:06,568 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 22:57:06,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1576956026] [2019-10-13 22:57:06,597 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-13 22:57:06,597 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:57:06,605 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:57:06,614 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:57:06,615 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:57:06,834 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:57:07,026 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:57:08,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:57:08,128 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 22:57:08,134 INFO L168 Benchmark]: Toolchain (without parser) took 4198.50 ms. Allocated memory was 138.4 MB in the beginning and 249.0 MB in the end (delta: 110.6 MB). Free memory was 101.8 MB in the beginning and 109.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:08,135 INFO L168 Benchmark]: CDTParser took 0.23 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: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 22:57:08,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 165.0 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:08,136 INFO L168 Benchmark]: Boogie Preprocessor took 83.50 ms. Allocated memory is still 202.4 MB. Free memory was 165.0 MB in the beginning and 162.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:08,137 INFO L168 Benchmark]: RCFGBuilder took 756.19 ms. Allocated memory is still 202.4 MB. Free memory was 162.3 MB in the beginning and 108.5 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:08,138 INFO L168 Benchmark]: TraceAbstraction took 2677.55 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 107.8 MB in the beginning and 109.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:08,144 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 165.0 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.50 ms. Allocated memory is still 202.4 MB. Free memory was 165.0 MB in the beginning and 162.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 756.19 ms. Allocated memory is still 202.4 MB. Free memory was 162.3 MB in the beginning and 108.5 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2677.55 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 107.8 MB in the beginning and 109.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 44.9 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...