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/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:56:55,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:56:55,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:56:55,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:56:55,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:56:55,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:56:55,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:56:55,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:56:55,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:56:55,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:56:55,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:56:55,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:56:55,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:56:55,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:56:55,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:56:55,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:56:55,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:56:55,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:56:55,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:56:55,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:56:55,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:56:55,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:56:55,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:56:55,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:56:55,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:56:55,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:56:55,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:56:55,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:56:55,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:56:55,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:56:55,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:56:55,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:56:55,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:56:55,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:56:55,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:56:55,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:56:55,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:56:55,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:56:55,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:56:55,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:56:55,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:56:55,746 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 22:56:55,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:56:55,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:56:55,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:56:55,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:56:55,763 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:56:55,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:56:55,764 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:56:55,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:56:55,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:56:55,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:56:55,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:56:55,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:56:55,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:56:55,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:56:55,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:56:55,765 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:56:55,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:56:55,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:56:55,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:56:55,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:56:55,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:56:55,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:56:55,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:56:55,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:56:55,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:56:55,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:56:55,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:56:55,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:56:55,768 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 22:56:56,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:56:56,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:56:56,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:56:56,085 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:56:56,085 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:56:56,086 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-10-13 22:56:56,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6637a9e59/1b1c0592f72e4ef59fa59b8c6b241ecc/FLAG68fb0e410 [2019-10-13 22:56:56,765 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:56:56,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-10-13 22:56:56,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6637a9e59/1b1c0592f72e4ef59fa59b8c6b241ecc/FLAG68fb0e410 [2019-10-13 22:56:57,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6637a9e59/1b1c0592f72e4ef59fa59b8c6b241ecc [2019-10-13 22:56:57,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:56:57,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:56:57,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:56:57,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:56:57,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:56:57,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57, skipping insertion in model container [2019-10-13 22:56:57,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,064 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:56:57,106 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:56:57,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:56:57,588 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:56:57,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:56:57,707 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:56:57,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57 WrapperNode [2019-10-13 22:56:57,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:56:57,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:56:57,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:56:57,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:56:57,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (1/1) ... [2019-10-13 22:56:57,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:56:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:56:57,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:56:57,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:56:57,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (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 22:56:57,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:56:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:56:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:56:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:56:57,843 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:56:57,844 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 22:56:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-13 22:56:57,845 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_last [2019-10-13 22:56:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:56:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:56:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:56:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:56:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:56:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:56:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:56:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:56:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:56:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:56:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:56:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:56:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:56:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:56:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:56:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:56:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:56:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:56:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:56:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:56:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:56:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:56:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:56:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:56:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:56:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:56:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:56:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:56:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:56:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:56:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:56:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:56:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:56:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:56:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:56:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:56:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:56:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:56:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:56:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:56:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:56:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:56:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:56:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:56:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:56:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:56:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:56:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:56:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:56:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:56:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:56:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:56:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:56:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:56:57,863 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:56:57,864 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:56:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:56:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:56:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:56:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:56:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:56:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:56:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:56:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:56:57,868 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:56:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 22:56:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:56:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:56:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:56:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-13 22:56:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_last [2019-10-13 22:56:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:56:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:56:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:56:58,299 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:56:58,560 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:56:58,560 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:56:58,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:56:58 BoogieIcfgContainer [2019-10-13 22:56:58,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:56:58,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:56:58,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:56:58,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:56:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:56:57" (1/3) ... [2019-10-13 22:56:58,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3508b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:56:58, skipping insertion in model container [2019-10-13 22:56:58,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:57" (2/3) ... [2019-10-13 22:56:58,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3508b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:56:58, skipping insertion in model container [2019-10-13 22:56:58,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:56:58" (3/3) ... [2019-10-13 22:56:58,571 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2019-10-13 22:56:58,581 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:56:58,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:56:58,601 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:56:58,623 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:56:58,624 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:56:58,624 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:56:58,624 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:56:58,624 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:56:58,624 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:56:58,624 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:56:58,625 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:56:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-10-13 22:56:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 22:56:58,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:58,651 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:58,653 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash 364535095, now seen corresponding path program 1 times [2019-10-13 22:56:58,669 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:58,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068600290] [2019-10-13 22:56:58,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:58,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:58,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:58,947 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 22:56:58,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068600290] [2019-10-13 22:56:58,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:58,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:56:58,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675861465] [2019-10-13 22:56:58,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:56:58,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:56:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:56:58,974 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 5 states. [2019-10-13 22:56:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:59,095 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2019-10-13 22:56:59,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:56:59,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-13 22:56:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:59,110 INFO L225 Difference]: With dead ends: 66 [2019-10-13 22:56:59,111 INFO L226 Difference]: Without dead ends: 37 [2019-10-13 22:56:59,118 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 22:56:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-13 22:56:59,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-10-13 22:56:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-13 22:56:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-10-13 22:56:59,159 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2019-10-13 22:56:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:59,160 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-10-13 22:56:59,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:56:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-10-13 22:56:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 22:56:59,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:59,163 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] [2019-10-13 22:56:59,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:59,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1720674643, now seen corresponding path program 1 times [2019-10-13 22:56:59,164 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:59,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583891059] [2019-10-13 22:56:59,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:59,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583891059] [2019-10-13 22:56:59,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:59,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:56:59,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252450221] [2019-10-13 22:56:59,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:56:59,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:59,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:56:59,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:56:59,328 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 4 states. [2019-10-13 22:56:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:59,365 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-10-13 22:56:59,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:56:59,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-13 22:56:59,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:59,369 INFO L225 Difference]: With dead ends: 41 [2019-10-13 22:56:59,370 INFO L226 Difference]: Without dead ends: 38 [2019-10-13 22:56:59,371 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:56:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-13 22:56:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-10-13 22:56:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 22:56:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-13 22:56:59,379 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2019-10-13 22:56:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:59,380 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-13 22:56:59,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:56:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-13 22:56:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-13 22:56:59,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:59,382 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, 1, 1, 1, 1] [2019-10-13 22:56:59,382 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1872736846, now seen corresponding path program 1 times [2019-10-13 22:56:59,383 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:59,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832742249] [2019-10-13 22:56:59,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:59,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832742249] [2019-10-13 22:56:59,524 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:59,524 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 22:56:59,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201260566] [2019-10-13 22:56:59,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:56:59,525 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:59,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:56:59,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:56:59,526 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 6 states. [2019-10-13 22:56:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:59,709 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-10-13 22:56:59,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:56:59,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-13 22:56:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:59,711 INFO L225 Difference]: With dead ends: 52 [2019-10-13 22:56:59,711 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 22:56:59,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 22:56:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 22:56:59,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 22:56:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 22:56:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 22:56:59,719 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 36 [2019-10-13 22:56:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:59,720 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 22:56:59,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:56:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 22:56:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 22:56:59,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:59,722 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:59,722 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash 475312699, now seen corresponding path program 1 times [2019-10-13 22:56:59,723 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:59,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010331660] [2019-10-13 22:56:59,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:56:59,818 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010331660] [2019-10-13 22:56:59,819 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:59,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:56:59,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063487565] [2019-10-13 22:56:59,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:56:59,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:59,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:56:59,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:56:59,825 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2019-10-13 22:56:59,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:59,898 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2019-10-13 22:56:59,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:56:59,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-10-13 22:56:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:59,900 INFO L225 Difference]: With dead ends: 56 [2019-10-13 22:56:59,900 INFO L226 Difference]: Without dead ends: 38 [2019-10-13 22:56:59,904 INFO L600 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 [2019-10-13 22:56:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-13 22:56:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-10-13 22:56:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-13 22:56:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-10-13 22:56:59,915 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 39 [2019-10-13 22:56:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:59,916 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-10-13 22:56:59,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:56:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-10-13 22:56:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 22:56:59,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:59,920 INFO L380 BasicCegarLoop]: trace histogram [2, 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] [2019-10-13 22:56:59,920 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:59,921 INFO L82 PathProgramCache]: Analyzing trace with hash 838022678, now seen corresponding path program 1 times [2019-10-13 22:56:59,921 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:59,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978117443] [2019-10-13 22:56:59,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:59,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:57:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 22:57:00,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978117443] [2019-10-13 22:57:00,056 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615855794] [2019-10-13 22:57:00,056 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 22:57:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:57:00,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 22:57:00,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:57:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 22:57:00,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:57:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 22:57:00,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2005365765] [2019-10-13 22:57:00,471 INFO L162 IcfgInterpreter]: Started Sifa with 34 locations of interest [2019-10-13 22:57:00,472 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:57:00,478 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:57:00,487 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:57:00,488 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:57:00,624 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:57:00,797 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:57:01,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:57:01,115 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: ~head~0.base, ~head~0.offset := #t~ret3.base, #t~ret3.offset;havoc #t~ret3.base, #t~ret3.offset;~last~0.base, ~last~0.offset := ~head~0.base, ~head~0.offset; 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: ~head~0.base, ~head~0.offset := #t~ret3.base, #t~ret3.offset;havoc #t~ret3.base, #t~ret3.offset;~last~0.base, ~last~0.offset := ~head~0.base, ~head~0.offset; 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 22:57:01,121 INFO L168 Benchmark]: Toolchain (without parser) took 4073.03 ms. Allocated memory was 144.2 MB in the beginning and 250.6 MB in the end (delta: 106.4 MB). Free memory was 99.5 MB in the beginning and 172.1 MB in the end (delta: -72.6 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:01,122 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 22:57:01,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.12 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 99.3 MB in the beginning and 168.2 MB in the end (delta: -68.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:01,123 INFO L168 Benchmark]: Boogie Preprocessor took 75.21 ms. Allocated memory is still 202.4 MB. Free memory was 168.2 MB in the beginning and 164.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:01,124 INFO L168 Benchmark]: RCFGBuilder took 777.69 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 112.2 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:57:01,125 INFO L168 Benchmark]: TraceAbstraction took 2555.74 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 112.2 MB in the beginning and 172.1 MB in the end (delta: -59.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:57:01,129 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.12 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 99.3 MB in the beginning and 168.2 MB in the end (delta: -68.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.21 ms. Allocated memory is still 202.4 MB. Free memory was 168.2 MB in the beginning and 164.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 777.69 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 112.2 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2555.74 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 112.2 MB in the beginning and 172.1 MB in the end (delta: -59.9 MB). There was no memory consumed. 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: ~head~0.base, ~head~0.offset := #t~ret3.base, #t~ret3.offset;havoc #t~ret3.base, #t~ret3.offset;~last~0.base, ~last~0.offset := ~head~0.base, ~head~0.offset; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ~head~0.base, ~head~0.offset := #t~ret3.base, #t~ret3.offset;havoc #t~ret3.base, #t~ret3.offset;~last~0.base, ~last~0.offset := ~head~0.base, ~head~0.offset;: 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...