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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:05:04,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:05:04,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:05:04,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:05:04,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:05:04,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:05:04,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:05:04,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:05:04,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:05:04,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:05:04,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:05:04,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:05:04,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:05:04,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:05:04,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:05:04,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:05:04,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:05:04,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:05:04,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:05:04,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:05:04,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:05:04,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:05:04,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:05:04,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:05:04,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:05:04,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:05:04,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:05:04,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:05:04,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:05:04,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:05:04,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:05:04,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:05:04,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:05:04,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:05:04,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:05:04,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:05:04,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:05:04,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:05:04,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:05:04,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:05:04,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:05:04,776 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 21:05:04,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:05:04,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:05:04,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:05:04,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:05:04,814 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:05:04,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:05:04,815 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:05:04,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:05:04,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:05:04,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:05:04,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:05:04,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:05:04,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:05:04,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:05:04,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:05:04,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:05:04,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:05:04,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:05:04,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:05:04,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:05:04,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:05:04,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:04,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:05:04,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:05:04,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:05:04,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:05:04,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:05:04,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:05:04,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:05:05,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:05:05,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:05:05,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:05:05,125 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:05:05,125 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:05:05,126 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2019-10-13 21:05:05,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2ff1053/bf1afc03df184032aa0b9c39b5c07c0a/FLAGc967bcc35 [2019-10-13 21:05:05,714 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:05:05,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2019-10-13 21:05:05,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2ff1053/bf1afc03df184032aa0b9c39b5c07c0a/FLAGc967bcc35 [2019-10-13 21:05:06,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2ff1053/bf1afc03df184032aa0b9c39b5c07c0a [2019-10-13 21:05:06,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:05:06,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:05:06,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:06,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:05:06,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:05:06,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc7b83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06, skipping insertion in model container [2019-10-13 21:05:06,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,093 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:05:06,142 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:05:06,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:06,570 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:05:06,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:05:06,689 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:05:06,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06 WrapperNode [2019-10-13 21:05:06,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:05:06,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:05:06,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:05:06,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:05:06,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... [2019-10-13 21:05:06,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:05:06,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:05:06,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:05:06,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:05:06,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:05:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:05:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:05:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:05:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:05:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 21:05:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 21:05:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-13 21:05:06,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-10-13 21:05:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:05:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:05:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:05:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:05:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:05:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:05:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:05:06,825 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:05:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:05:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:05:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:05:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:05:06,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:05:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:05:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:05:06,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:05:06,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:05:06,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:05:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:05:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:05:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:05:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:05:06,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:05:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:05:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:05:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:05:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:05:06,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:05:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:05:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:05:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:05:06,832 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:05:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:05:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:05:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:05:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:05:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:05:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:05:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:05:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:05:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:05:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:05:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:05:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:05:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:05:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:05:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:05:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:05:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:05:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:05:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:05:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:05:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:05:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:05:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:05:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:05:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:05:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:05:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:05:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:05:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:05:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:05:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:05:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:05:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:05:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:05:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:05:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:05:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:05:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:05:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:05:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 21:05:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 21:05:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:05:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:05:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:05:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:05:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:05:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:05:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:05:07,221 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 21:05:07,344 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:05:07,346 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:05:07,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:07 BoogieIcfgContainer [2019-10-13 21:05:07,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:05:07,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:05:07,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:05:07,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:05:07,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:05:06" (1/3) ... [2019-10-13 21:05:07,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700a91aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:07, skipping insertion in model container [2019-10-13 21:05:07,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:05:06" (2/3) ... [2019-10-13 21:05:07,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700a91aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:05:07, skipping insertion in model container [2019-10-13 21:05:07,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:05:07" (3/3) ... [2019-10-13 21:05:07,358 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-10-13 21:05:07,376 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:05:07,384 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:05:07,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:05:07,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:05:07,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:05:07,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:05:07,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:05:07,416 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:05:07,416 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:05:07,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:05:07,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:05:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-13 21:05:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:05:07,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:07,436 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:07,438 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:07,442 INFO L82 PathProgramCache]: Analyzing trace with hash -638260892, now seen corresponding path program 1 times [2019-10-13 21:05:07,451 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:07,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543443490] [2019-10-13 21:05:07,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:07,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:07,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:07,594 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 21:05:07,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543443490] [2019-10-13 21:05:07,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:07,597 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:05:07,597 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5821226] [2019-10-13 21:05:07,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:07,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:07,615 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-10-13 21:05:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:07,633 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2019-10-13 21:05:07,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:07,634 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-13 21:05:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:07,643 INFO L225 Difference]: With dead ends: 56 [2019-10-13 21:05:07,644 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 21:05:07,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 21:05:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-13 21:05:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 21:05:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-10-13 21:05:07,687 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 17 [2019-10-13 21:05:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:07,687 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-10-13 21:05:07,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-10-13 21:05:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:05:07,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:07,689 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:07,689 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:07,690 INFO L82 PathProgramCache]: Analyzing trace with hash 936264387, now seen corresponding path program 1 times [2019-10-13 21:05:07,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:07,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45900570] [2019-10-13 21:05:07,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:07,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:07,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:07,770 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 21:05:07,771 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45900570] [2019-10-13 21:05:07,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:05:07,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:05:07,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790583048] [2019-10-13 21:05:07,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:05:07,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:07,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:05:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:05:07,774 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2019-10-13 21:05:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:07,821 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-10-13 21:05:07,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:05:07,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-13 21:05:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:07,824 INFO L225 Difference]: With dead ends: 38 [2019-10-13 21:05:07,824 INFO L226 Difference]: Without dead ends: 34 [2019-10-13 21:05:07,825 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 21:05:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-13 21:05:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-10-13 21:05:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-13 21:05:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-10-13 21:05:07,837 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 17 [2019-10-13 21:05:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:07,838 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-10-13 21:05:07,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:05:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-10-13 21:05:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 21:05:07,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:07,839 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:07,839 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:07,840 INFO L82 PathProgramCache]: Analyzing trace with hash -183361306, now seen corresponding path program 1 times [2019-10-13 21:05:07,840 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:07,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700333272] [2019-10-13 21:05:07,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:07,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:07,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:08,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700333272] [2019-10-13 21:05:08,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530608562] [2019-10-13 21:05:08,011 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 21:05:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:08,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:05:08,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:05:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:05:08,173 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:05:08,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:05:08,271 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:05:08,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 10 [2019-10-13 21:05:08,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612926603] [2019-10-13 21:05:08,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:05:08,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:05:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:05:08,273 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 7 states. [2019-10-13 21:05:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:08,340 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2019-10-13 21:05:08,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:05:08,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-10-13 21:05:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:08,342 INFO L225 Difference]: With dead ends: 51 [2019-10-13 21:05:08,342 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 21:05:08,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:05:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 21:05:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-10-13 21:05:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 21:05:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-10-13 21:05:08,349 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 23 [2019-10-13 21:05:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:08,350 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-10-13 21:05:08,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:05:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-10-13 21:05:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:05:08,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:05:08,351 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:05:08,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:05:08,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:05:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:08,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1888686209, now seen corresponding path program 1 times [2019-10-13 21:05:08,558 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:05:08,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495988190] [2019-10-13 21:05:08,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:08,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:05:08,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:05:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:05:08,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495988190] [2019-10-13 21:05:08,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260717196] [2019-10-13 21:05:08,735 INFO L94 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 [2019-10-13 21:05:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:05:08,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 21:05:08,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:05:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:05:08,897 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:05:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:05:09,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1757037750] [2019-10-13 21:05:09,014 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 33 [2019-10-13 21:05:09,061 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:05:09,062 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:05:09,131 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:05:09,133 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-10-13 21:05:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:05:09,137 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:05:09,174 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:05:09,175 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:05:09,177 INFO L553 sIntCurrentIteration]: We unified 31 AI predicates to 31 [2019-10-13 21:05:09,177 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:05:09,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:05:09,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9, 6, 6] total 11 [2019-10-13 21:05:09,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39446924] [2019-10-13 21:05:09,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:05:09,179 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:05:09,180 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:05:09,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:05:09,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:09,180 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 2 states. [2019-10-13 21:05:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:05:09,183 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-10-13 21:05:09,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:05:09,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-10-13 21:05:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:05:09,184 INFO L225 Difference]: With dead ends: 33 [2019-10-13 21:05:09,184 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:05:09,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:05:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:05:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:05:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:05:09,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:05:09,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-13 21:05:09,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:05:09,186 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:05:09,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:05:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:05:09,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:05:09,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:05:09,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:05:09,437 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:09,437 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:09,437 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:09,438 INFO L446 ceAbstractionStarter]: At program point L561(line 561) the Hoare annotation is: true [2019-10-13 21:05:09,438 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2019-10-13 21:05:09,438 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2019-10-13 21:05:09,438 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:05:09,438 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:05:09,438 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:05:09,438 INFO L446 ceAbstractionStarter]: At program point L575(line 575) the Hoare annotation is: true [2019-10-13 21:05:09,438 INFO L443 ceAbstractionStarter]: For program point sll_createEXIT(lines 572 580) no Hoare annotation was computed. [2019-10-13 21:05:09,439 INFO L443 ceAbstractionStarter]: For program point L575-1(line 575) no Hoare annotation was computed. [2019-10-13 21:05:09,439 INFO L443 ceAbstractionStarter]: For program point L574-2(lines 574 578) no Hoare annotation was computed. [2019-10-13 21:05:09,439 INFO L446 ceAbstractionStarter]: At program point L574-3(lines 574 578) the Hoare annotation is: true [2019-10-13 21:05:09,439 INFO L443 ceAbstractionStarter]: For program point L574-4(lines 574 578) no Hoare annotation was computed. [2019-10-13 21:05:09,439 INFO L446 ceAbstractionStarter]: At program point sll_createENTRY(lines 572 580) the Hoare annotation is: true [2019-10-13 21:05:09,439 INFO L443 ceAbstractionStarter]: For program point sll_createFINAL(lines 572 580) no Hoare annotation was computed. [2019-10-13 21:05:09,439 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:05:09,440 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:05:09,440 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:05:09,440 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:05:09,440 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:05:09,440 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:05:09,440 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:05:09,440 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 586 600) the Hoare annotation is: true [2019-10-13 21:05:09,441 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 586 600) no Hoare annotation was computed. [2019-10-13 21:05:09,441 INFO L439 ceAbstractionStarter]: At program point L595(lines 586 600) the Hoare annotation is: false [2019-10-13 21:05:09,441 INFO L443 ceAbstractionStarter]: For program point L594(lines 594 596) no Hoare annotation was computed. [2019-10-13 21:05:09,441 INFO L439 ceAbstractionStarter]: At program point L592(line 592) the Hoare annotation is: false [2019-10-13 21:05:09,441 INFO L443 ceAbstractionStarter]: For program point L592-1(lines 591 593) no Hoare annotation was computed. [2019-10-13 21:05:09,441 INFO L439 ceAbstractionStarter]: At program point L589(line 589) the Hoare annotation is: false [2019-10-13 21:05:09,441 INFO L439 ceAbstractionStarter]: At program point L591-2(lines 591 593) the Hoare annotation is: false [2019-10-13 21:05:09,441 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 586 600) no Hoare annotation was computed. [2019-10-13 21:05:09,442 INFO L443 ceAbstractionStarter]: For program point L589-1(line 589) no Hoare annotation was computed. [2019-10-13 21:05:09,442 INFO L443 ceAbstractionStarter]: For program point L591-3(lines 591 593) no Hoare annotation was computed. [2019-10-13 21:05:09,442 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 598) no Hoare annotation was computed. [2019-10-13 21:05:09,442 INFO L443 ceAbstractionStarter]: For program point sll_remove_firstEXIT(lines 581 585) no Hoare annotation was computed. [2019-10-13 21:05:09,442 INFO L446 ceAbstractionStarter]: At program point sll_remove_firstENTRY(lines 581 585) the Hoare annotation is: true [2019-10-13 21:05:09,442 INFO L443 ceAbstractionStarter]: For program point sll_remove_firstFINAL(lines 581 585) no Hoare annotation was computed. [2019-10-13 21:05:09,442 INFO L446 ceAbstractionStarter]: At program point node_createENTRY(lines 563 571) the Hoare annotation is: true [2019-10-13 21:05:09,443 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 563 571) no Hoare annotation was computed. [2019-10-13 21:05:09,443 INFO L446 ceAbstractionStarter]: At program point L566(line 566) the Hoare annotation is: true [2019-10-13 21:05:09,443 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 563 571) no Hoare annotation was computed. [2019-10-13 21:05:09,443 INFO L443 ceAbstractionStarter]: For program point L565(lines 565 567) no Hoare annotation was computed. [2019-10-13 21:05:09,443 INFO L443 ceAbstractionStarter]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2019-10-13 21:05:09,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:05:09 BoogieIcfgContainer [2019-10-13 21:05:09,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:05:09,458 INFO L168 Benchmark]: Toolchain (without parser) took 3381.04 ms. Allocated memory was 137.9 MB in the beginning and 250.6 MB in the end (delta: 112.7 MB). Free memory was 101.4 MB in the beginning and 208.5 MB in the end (delta: -107.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:09,459 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:05:09,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.55 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 167.9 MB in the end (delta: -66.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:09,461 INFO L168 Benchmark]: Boogie Preprocessor took 78.40 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 165.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:09,462 INFO L168 Benchmark]: RCFGBuilder took 578.59 ms. Allocated memory is still 202.4 MB. Free memory was 165.2 MB in the beginning and 122.3 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:05:09,462 INFO L168 Benchmark]: TraceAbstraction took 2107.02 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 121.7 MB in the beginning and 208.5 MB in the end (delta: -86.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:05:09,466 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 611.55 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 167.9 MB in the end (delta: -66.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.40 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 165.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 578.59 ms. Allocated memory is still 202.4 MB. Free memory was 165.2 MB in the beginning and 122.3 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2107.02 ms. Allocated memory was 202.4 MB in the beginning and 250.6 MB in the end (delta: 48.2 MB). Free memory was 121.7 MB in the beginning and 208.5 MB in the end (delta: -86.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 598]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 591]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 561]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 574]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 45 locations, 1 error locations. Result: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 29 SDslu, 145 SDs, 0 SdLazy, 30 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 18 PreInvPairs, 18 NumberOfFragments, 16 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8639 SizeOfPredicates, 4 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 4/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 123, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.967741935483871, AVG_VARS_REMOVED_DURING_WEAKENING: 1.4516129032258065, AVG_WEAKENED_CONJUNCTS: 0.1935483870967742, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...