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-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:13:15,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:13:15,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:13:15,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:13:15,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:13:15,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:13:15,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:13:15,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:13:15,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:13:15,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:13:15,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:13:15,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:13:15,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:13:15,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:13:15,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:13:15,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:13:15,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:13:15,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:13:15,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:13:15,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:13:15,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:13:15,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:13:15,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:13:15,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:13:15,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:13:15,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:13:15,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:13:15,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:13:15,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:13:15,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:13:15,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:13:15,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:13:15,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:13:15,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:13:15,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:13:15,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:13:15,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:13:15,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:13:15,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:13:15,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:13:15,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:13:15,633 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 [2019-10-07 13:13:15,650 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:13:15,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:13:15,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:13:15,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:13:15,653 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:13:15,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:13:15,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:13:15,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:13:15,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:13:15,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:13:15,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:13:15,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:13:15,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:13:15,656 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:13:15,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:13:15,657 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:13:15,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:13:15,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:13:15,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:13:15,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:13:15,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:13:15,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:13:15,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:13:15,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:13:15,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:13:15,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:13:15,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:13:15,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:13:15,660 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 [2019-10-07 13:13:15,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:13:15,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:13:15,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:13:15,961 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:13:15,962 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:13:15,963 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-10-07 13:13:16,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c4de9ab/19b3b42488584c9796273bd40a69b63a/FLAGe58f7dc1d [2019-10-07 13:13:16,575 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:13:16,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-10-07 13:13:16,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c4de9ab/19b3b42488584c9796273bd40a69b63a/FLAGe58f7dc1d [2019-10-07 13:13:16,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6c4de9ab/19b3b42488584c9796273bd40a69b63a [2019-10-07 13:13:16,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:13:16,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:13:16,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:13:16,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:13:16,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:13:16,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:13:16" (1/1) ... [2019-10-07 13:13:16,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6764f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:16, skipping insertion in model container [2019-10-07 13:13:16,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:13:16" (1/1) ... [2019-10-07 13:13:16,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:13:16,955 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:13:17,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:13:17,451 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:13:17,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:13:17,563 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:13:17,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17 WrapperNode [2019-10-07 13:13:17,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:13:17,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:13:17,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:13:17,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:13:17,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (1/1) ... [2019-10-07 13:13:17,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:13:17,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:13:17,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:13:17,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:13:17,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (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 [2019-10-07 13:13:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:13:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:13:17,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:13:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:13:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:13:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-07 13:13:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2019-10-07 13:13:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-07 13:13:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-07 13:13:17,707 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2019-10-07 13:13:17,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:13:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:13:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:13:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:13:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:13:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:13:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:13:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:13:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:13:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:13:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:13:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:13:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:13:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:13:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:13:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:13:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:13:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:13:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:13:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:13:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:13:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:13:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:13:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:13:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:13:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:13:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:13:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:13:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:13:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:13:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:13:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:13:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:13:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:13:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:13:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:13:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:13:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:13:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:13:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:13:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:13:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:13:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:13:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:13:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:13:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:13:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:13:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:13:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:13:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:13:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:13:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:13:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:13:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 13:13:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:13:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:13:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:13:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:13:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:13:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:13:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:13:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:13:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:13:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:13:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:13:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:13:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:13:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:13:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:13:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:13:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:13:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:13:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:13:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:13:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:13:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:13:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:13:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:13:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:13:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:13:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:13:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:13:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:13:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:13:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:13:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-07 13:13:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:13:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:13:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2019-10-07 13:13:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:13:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 13:13:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:13:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:13:18,148 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:13:18,558 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:13:18,559 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-07 13:13:18,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:13:18 BoogieIcfgContainer [2019-10-07 13:13:18,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:13:18,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:13:18,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:13:18,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:13:18,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:13:16" (1/3) ... [2019-10-07 13:13:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f804b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:13:18, skipping insertion in model container [2019-10-07 13:13:18,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:17" (2/3) ... [2019-10-07 13:13:18,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f804b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:13:18, skipping insertion in model container [2019-10-07 13:13:18,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:13:18" (3/3) ... [2019-10-07 13:13:18,583 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2019-10-07 13:13:18,596 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:13:18,605 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:13:18,617 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:13:18,641 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:13:18,642 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:13:18,642 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:13:18,642 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:13:18,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:13:18,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:13:18,642 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:13:18,643 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:13:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-10-07 13:13:18,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-07 13:13:18,671 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:18,672 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:18,674 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1546971185, now seen corresponding path program 1 times [2019-10-07 13:13:18,692 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:18,692 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:18,693 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:18,693 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:18,915 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:18,916 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:13:18,916 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:13:18,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:13:18,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:13:18,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:13:18,943 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2019-10-07 13:13:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:19,042 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2019-10-07 13:13:19,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:13:19,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-07 13:13:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:19,057 INFO L225 Difference]: With dead ends: 117 [2019-10-07 13:13:19,057 INFO L226 Difference]: Without dead ends: 50 [2019-10-07 13:13:19,064 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:13:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-07 13:13:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-10-07 13:13:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-07 13:13:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2019-10-07 13:13:19,135 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 9 [2019-10-07 13:13:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:19,136 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2019-10-07 13:13:19,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:13:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2019-10-07 13:13:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-07 13:13:19,139 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:19,139 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:19,139 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:19,141 INFO L82 PathProgramCache]: Analyzing trace with hash -626152311, now seen corresponding path program 1 times [2019-10-07 13:13:19,141 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:19,141 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:19,141 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:19,142 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:13:19,276 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:19,276 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:13:19,276 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:13:19,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:13:19,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:13:19,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:13:19,279 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 4 states. [2019-10-07 13:13:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:19,360 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2019-10-07 13:13:19,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:13:19,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-07 13:13:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:19,365 INFO L225 Difference]: With dead ends: 67 [2019-10-07 13:13:19,365 INFO L226 Difference]: Without dead ends: 50 [2019-10-07 13:13:19,366 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:13:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-07 13:13:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-10-07 13:13:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-07 13:13:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2019-10-07 13:13:19,375 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 13 [2019-10-07 13:13:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:19,376 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2019-10-07 13:13:19,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:13:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2019-10-07 13:13:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-07 13:13:19,377 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:19,378 INFO L385 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2019-10-07 13:13:19,378 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash 227809436, now seen corresponding path program 1 times [2019-10-07 13:13:19,379 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:19,379 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:19,379 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:19,379 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:19,569 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:19,569 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:13:19,569 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 13:13:19,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 13:13:19,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 13:13:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:13:19,571 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 9 states. [2019-10-07 13:13:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:19,803 INFO L93 Difference]: Finished difference Result 109 states and 135 transitions. [2019-10-07 13:13:19,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:13:19,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-10-07 13:13:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:19,807 INFO L225 Difference]: With dead ends: 109 [2019-10-07 13:13:19,808 INFO L226 Difference]: Without dead ends: 70 [2019-10-07 13:13:19,810 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:13:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-07 13:13:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-10-07 13:13:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-07 13:13:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2019-10-07 13:13:19,840 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 31 [2019-10-07 13:13:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:19,841 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2019-10-07 13:13:19,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 13:13:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2019-10-07 13:13:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-07 13:13:19,847 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:19,850 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 13:13:19,850 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:19,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1550252586, now seen corresponding path program 2 times [2019-10-07 13:13:19,852 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:19,852 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:19,853 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:19,853 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:20,182 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:20,183 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:13:20,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-07 13:13:20,316 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-07 13:13:20,316 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:13:20,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:13:20,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:13:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:13:20,404 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:13:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 13:13:20,525 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:13:20,525 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 17 [2019-10-07 13:13:20,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:13:20,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:13:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:13:20,528 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2019-10-07 13:13:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:20,660 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2019-10-07 13:13:20,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:13:20,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-07 13:13:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:20,663 INFO L225 Difference]: With dead ends: 99 [2019-10-07 13:13:20,663 INFO L226 Difference]: Without dead ends: 85 [2019-10-07 13:13:20,664 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-07 13:13:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-07 13:13:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-10-07 13:13:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-10-07 13:13:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2019-10-07 13:13:20,677 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 35 [2019-10-07 13:13:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:20,677 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2019-10-07 13:13:20,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:13:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2019-10-07 13:13:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-07 13:13:20,679 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:20,679 INFO L385 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:20,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:13:20,884 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash -101786895, now seen corresponding path program 1 times [2019-10-07 13:13:20,885 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:20,886 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:20,886 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:20,886 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 13:13:21,044 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:21,044 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:13:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:13:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:21,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 13:13:21,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:13:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:21,250 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:13:21,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:21,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:21,602 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:13:21,602 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [11] total 18 [2019-10-07 13:13:21,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-07 13:13:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-07 13:13:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-07 13:13:21,604 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand 15 states. [2019-10-07 13:13:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:21,843 INFO L93 Difference]: Finished difference Result 154 states and 194 transitions. [2019-10-07 13:13:21,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 13:13:21,844 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-10-07 13:13:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:21,845 INFO L225 Difference]: With dead ends: 154 [2019-10-07 13:13:21,846 INFO L226 Difference]: Without dead ends: 83 [2019-10-07 13:13:21,847 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2019-10-07 13:13:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-07 13:13:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2019-10-07 13:13:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-07 13:13:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-10-07 13:13:21,858 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 44 [2019-10-07 13:13:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:21,858 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-10-07 13:13:21,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-07 13:13:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-10-07 13:13:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-07 13:13:21,860 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:21,860 INFO L385 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:22,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:13:22,065 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:22,065 INFO L82 PathProgramCache]: Analyzing trace with hash -340056939, now seen corresponding path program 1 times [2019-10-07 13:13:22,065 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:22,066 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:22,066 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:22,066 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 13:13:22,239 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:22,239 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:13:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:13:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:22,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 13:13:22,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:13:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:22,425 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:13:22,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:22,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:22,876 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:13:22,903 INFO L162 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-10-07 13:13:22,904 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:13:22,909 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:13:22,915 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:13:22,916 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:13:23,027 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-07 13:13:23,305 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:13:23,529 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:13:23,625 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:13:23,778 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:13:23,828 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:13:24,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:13:24,048 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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.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.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) 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:99) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 13:13:24,054 INFO L168 Benchmark]: Toolchain (without parser) took 7189.06 ms. Allocated memory was 137.4 MB in the beginning and 287.8 MB in the end (delta: 150.5 MB). Free memory was 99.5 MB in the beginning and 101.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 148.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:13:24,055 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 13:13:24,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.85 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 99.3 MB in the beginning and 167.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:13:24,056 INFO L168 Benchmark]: Boogie Preprocessor took 76.15 ms. Allocated memory is still 203.4 MB. Free memory was 167.7 MB in the beginning and 164.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:13:24,057 INFO L168 Benchmark]: RCFGBuilder took 920.65 ms. Allocated memory is still 203.4 MB. Free memory was 164.3 MB in the beginning and 102.7 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:13:24,058 INFO L168 Benchmark]: TraceAbstraction took 5488.10 ms. Allocated memory was 203.4 MB in the beginning and 287.8 MB in the end (delta: 84.4 MB). Free memory was 102.7 MB in the beginning and 101.8 MB in the end (delta: 810.5 kB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:13:24,065 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.85 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 99.3 MB in the beginning and 167.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.15 ms. Allocated memory is still 203.4 MB. Free memory was 167.7 MB in the beginning and 164.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 920.65 ms. Allocated memory is still 203.4 MB. Free memory was 164.3 MB in the beginning and 102.7 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5488.10 ms. Allocated memory was 203.4 MB in the beginning and 287.8 MB in the end (delta: 84.4 MB). Free memory was 102.7 MB in the beginning and 101.8 MB in the end (delta: 810.5 kB). Peak memory consumption was 85.2 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...