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_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:57:01,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:57:01,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:57:01,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:57:01,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:57:01,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:57:01,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:57:01,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:57:01,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:57:01,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:57:01,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:57:01,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:57:01,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:57:01,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:57:01,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:57:01,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:57:01,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:57:01,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:57:01,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:57:01,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:57:01,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:57:01,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:57:01,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:57:01,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:57:01,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:57:01,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:57:01,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:57:01,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:57:01,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:57:01,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:57:01,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:57:01,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:57:01,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:57:01,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:57:01,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:57:01,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:57:01,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:57:01,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:57:01,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:57:01,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:57:01,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:57:01,462 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 22:57:01,480 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:57:01,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:57:01,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:57:01,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:57:01,483 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:57:01,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:57:01,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:57:01,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:57:01,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:57:01,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:57:01,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:57:01,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:57:01,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:57:01,486 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:57:01,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:57:01,486 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:57:01,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:57:01,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:57:01,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:57:01,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:57:01,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:57:01,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:57:01,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:57:01,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:57:01,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:57:01,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:57:01,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:57:01,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:57:01,489 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 22:57:01,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:57:01,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:57:01,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:57:01,795 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:57:01,796 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:57:01,797 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-13 22:57:01,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77fda069/ab527fd3aa624c038902fb84e33c1f27/FLAG9965b781b [2019-10-13 22:57:02,485 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:57:02,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-13 22:57:02,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77fda069/ab527fd3aa624c038902fb84e33c1f27/FLAG9965b781b [2019-10-13 22:57:02,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77fda069/ab527fd3aa624c038902fb84e33c1f27 [2019-10-13 22:57:02,787 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:57:02,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:57:02,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:57:02,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:57:02,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:57:02,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:57:02" (1/1) ... [2019-10-13 22:57:02,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7435ea83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:02, skipping insertion in model container [2019-10-13 22:57:02,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:57:02" (1/1) ... [2019-10-13 22:57:02,802 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:57:02,850 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:57:03,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:57:03,298 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:57:03,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:57:03,428 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:57:03,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03 WrapperNode [2019-10-13 22:57:03,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:57:03,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:57:03,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:57:03,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:57:03,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (1/1) ... [2019-10-13 22:57:03,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:57:03,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:57:03,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:57:03,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:57:03,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (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 22:57:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:57:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:57:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:57:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:57:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:57:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 22:57:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-13 22:57:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-13 22:57:03,557 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-13 22:57:03,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:57:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:57:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:57:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:57:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:57:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:57:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:57:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:57:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:57:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:57:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:57:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:57:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:57:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:57:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:57:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:57:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:57:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:57:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:57:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:57:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:57:03,561 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:57:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:57:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:57:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:57:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:57:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:57:03,562 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:57:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:57:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:57:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:57:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:57:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:57:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:57:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:57:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:57:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:57:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:57:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:57:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:57:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:57:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:57:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:57:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:57:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:57:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:57:03,566 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:57:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:57:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:57:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:57:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:57:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:57:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:57:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:57:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:57:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:57:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:57:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:57:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:57:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:57:03,570 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:57:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:57:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:57:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:57:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:57:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:57:03,571 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:57:03,572 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:57:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:57:03,574 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:57:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:57:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 22:57:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:57:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:57:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:57:03,575 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:57:03,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:57:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:57:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:57:03,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:57:03,962 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:57:04,248 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:57:04,248 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:57:04,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:57:04 BoogieIcfgContainer [2019-10-13 22:57:04,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:57:04,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:57:04,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:57:04,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:57:04,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:57:02" (1/3) ... [2019-10-13 22:57:04,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de7a445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:57:04, skipping insertion in model container [2019-10-13 22:57:04,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:57:03" (2/3) ... [2019-10-13 22:57:04,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de7a445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:57:04, skipping insertion in model container [2019-10-13 22:57:04,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:57:04" (3/3) ... [2019-10-13 22:57:04,257 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-10-13 22:57:04,266 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:57:04,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:57:04,285 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:57:04,311 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:57:04,311 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:57:04,311 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:57:04,312 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:57:04,312 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:57:04,312 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:57:04,312 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:57:04,313 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:57:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-13 22:57:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 22:57:04,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:57:04,340 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 22:57:04,342 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:57:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:57:04,348 INFO L82 PathProgramCache]: Analyzing trace with hash 776254535, now seen corresponding path program 1 times [2019-10-13 22:57:04,357 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:57:04,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799043169] [2019-10-13 22:57:04,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:04,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:04,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:04,622 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 22:57:04,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799043169] [2019-10-13 22:57:04,624 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:57:04,625 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:57:04,625 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523305976] [2019-10-13 22:57:04,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:57:04,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:57:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:57:04,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:57:04,648 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2019-10-13 22:57:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:57:04,751 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2019-10-13 22:57:04,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:57:04,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-13 22:57:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:57:04,761 INFO L225 Difference]: With dead ends: 81 [2019-10-13 22:57:04,761 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 22:57:04,764 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 22:57:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 22:57:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-13 22:57:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 22:57:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-13 22:57:04,805 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 25 [2019-10-13 22:57:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:57:04,806 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-13 22:57:04,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:57:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-13 22:57:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 22:57:04,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:57:04,808 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 22:57:04,809 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:57:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:57:04,809 INFO L82 PathProgramCache]: Analyzing trace with hash -711466522, now seen corresponding path program 1 times [2019-10-13 22:57:04,810 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:57:04,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744399074] [2019-10-13 22:57:04,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:04,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:57:04,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:04,934 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 22:57:04,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744399074] [2019-10-13 22:57:04,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019220499] [2019-10-13 22:57:04,935 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 22:57:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:05,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:57:05,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:57:05,137 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 22:57:05,137 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:57:05,272 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 22:57:05,273 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1513115551] [2019-10-13 22:57:05,300 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-13 22:57:05,300 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:57:05,306 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:57:05,315 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:57:05,315 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:57:05,481 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:57:05,740 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:57:06,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:57:06,787 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 22:57:06,797 INFO L168 Benchmark]: Toolchain (without parser) took 4008.67 ms. Allocated memory was 144.7 MB in the beginning and 250.1 MB in the end (delta: 105.4 MB). Free memory was 101.2 MB in the beginning and 113.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:06,798 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:57:06,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.77 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 165.1 MB in the end (delta: -64.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:06,801 INFO L168 Benchmark]: Boogie Preprocessor took 70.21 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 162.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:06,802 INFO L168 Benchmark]: RCFGBuilder took 749.84 ms. Allocated memory is still 201.9 MB. Free memory was 162.1 MB in the beginning and 109.3 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:06,807 INFO L168 Benchmark]: TraceAbstraction took 2545.07 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 108.3 MB in the beginning and 113.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:06,813 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.77 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 165.1 MB in the end (delta: -64.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.21 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 162.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 749.84 ms. Allocated memory is still 201.9 MB. Free memory was 162.1 MB in the beginning and 109.3 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2545.07 ms. Allocated memory was 201.9 MB in the beginning and 250.1 MB in the end (delta: 48.2 MB). Free memory was 108.3 MB in the beginning and 113.0 MB in the end (delta: -4.7 MB). Peak memory consumption was 43.6 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...