/usr/bin/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/heap-manipulation/tree-4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:11:05,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:11:05,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:11:05,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:11:05,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:11:05,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:11:05,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:11:05,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:11:05,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:11:05,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:11:05,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:11:05,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:11:05,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:11:05,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:11:05,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:11:05,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:11:05,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:11:05,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:11:05,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:11:05,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:11:05,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:11:05,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:11:05,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:11:05,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:11:05,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:11:05,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:11:05,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:11:05,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:11:05,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:11:05,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:11:05,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:11:05,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:11:05,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:11:05,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:11:05,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:11:05,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:11:05,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:11:05,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:11:05,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:11:05,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:11:05,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:11:05,877 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 [2019-11-07 02:11:05,890 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:11:05,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:11:05,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:11:05,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:11:05,892 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:11:05,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:11:05,893 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:11:05,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:11:05,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:11:05,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:11:05,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:11:05,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:11:05,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:11:05,894 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:11:05,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:11:05,894 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:11:05,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:11:05,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:11:05,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:11:05,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:11:05,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:11:05,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:11:05,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:11:05,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:11:05,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:11:05,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:11:05,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:11:05,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:11:05,897 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 [2019-11-07 02:11:06,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:11:06,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:11:06,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:11:06,214 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:11:06,215 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:11:06,215 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-11-07 02:11:06,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f678d2e2/36bcc4953d35406bac382f09a5722831/FLAG4793636b4 [2019-11-07 02:11:06,747 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:11:06,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-11-07 02:11:06,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f678d2e2/36bcc4953d35406bac382f09a5722831/FLAG4793636b4 [2019-11-07 02:11:07,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f678d2e2/36bcc4953d35406bac382f09a5722831 [2019-11-07 02:11:07,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:11:07,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:11:07,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:11:07,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:11:07,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:11:07,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e51f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07, skipping insertion in model container [2019-11-07 02:11:07,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,148 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:11:07,205 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:11:07,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:11:07,691 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:11:07,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:11:07,823 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:11:07,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07 WrapperNode [2019-11-07 02:11:07,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:11:07,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:11:07,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:11:07,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:11:07,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (1/1) ... [2019-11-07 02:11:07,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:11:07,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:11:07,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:11:07,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:11:07,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (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 [2019-11-07 02:11:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:11:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:11:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 02:11:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 02:11:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-11-07 02:11:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-11-07 02:11:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2019-11-07 02:11:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2019-11-07 02:11:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:11:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:11:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 02:11:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 02:11:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 02:11:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 02:11:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 02:11:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 02:11:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 02:11:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 02:11:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 02:11:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 02:11:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 02:11:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 02:11:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 02:11:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 02:11:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 02:11:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 02:11:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 02:11:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 02:11:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 02:11:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 02:11:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 02:11:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 02:11:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 02:11:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 02:11:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 02:11:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 02:11:07,976 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 02:11:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 02:11:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 02:11:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 02:11:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 02:11:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 02:11:07,977 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 02:11:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 02:11:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 02:11:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 02:11:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 02:11:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 02:11:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 02:11:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:11:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 02:11:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 02:11:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 02:11:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 02:11:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 02:11:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 02:11:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 02:11:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 02:11:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 02:11:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 02:11:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 02:11:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:11:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:11:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:11:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2019-11-07 02:11:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:11:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:11:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:11:07,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:11:08,922 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:11:08,923 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-07 02:11:08,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:08 BoogieIcfgContainer [2019-11-07 02:11:08,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:11:08,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:11:08,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:11:08,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:11:08,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:11:07" (1/3) ... [2019-11-07 02:11:08,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1042969d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:08, skipping insertion in model container [2019-11-07 02:11:08,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:07" (2/3) ... [2019-11-07 02:11:08,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1042969d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:08, skipping insertion in model container [2019-11-07 02:11:08,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:08" (3/3) ... [2019-11-07 02:11:08,938 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-4.i [2019-11-07 02:11:08,948 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:11:08,971 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:11:08,983 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:11:09,004 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:11:09,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:11:09,005 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:11:09,005 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:11:09,005 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:11:09,005 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:11:09,006 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:11:09,006 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:11:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-11-07 02:11:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 02:11:09,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:11:09,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:11:09,033 INFO L410 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:11:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:11:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash 833824495, now seen corresponding path program 1 times [2019-11-07 02:11:09,049 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:11:09,049 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786860396] [2019-11-07 02:11:09,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:11:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:11:09,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786860396] [2019-11-07 02:11:09,191 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:11:09,191 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 02:11:09,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17233429] [2019-11-07 02:11:09,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 02:11:09,198 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:11:09,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 02:11:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 02:11:09,214 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-11-07 02:11:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:11:09,241 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2019-11-07 02:11:09,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 02:11:09,242 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-07 02:11:09,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:11:09,252 INFO L225 Difference]: With dead ends: 79 [2019-11-07 02:11:09,252 INFO L226 Difference]: Without dead ends: 31 [2019-11-07 02:11:09,255 INFO L630 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 [2019-11-07 02:11:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-07 02:11:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-07 02:11:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-07 02:11:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-07 02:11:09,295 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2019-11-07 02:11:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:11:09,296 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-07 02:11:09,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 02:11:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-07 02:11:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 02:11:09,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:11:09,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:11:09,298 INFO L410 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:11:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:11:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash -174511117, now seen corresponding path program 1 times [2019-11-07 02:11:09,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:11:09,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975169935] [2019-11-07 02:11:09,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:11:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:11:09,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975169935] [2019-11-07 02:11:09,435 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:11:09,435 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 02:11:09,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089928460] [2019-11-07 02:11:09,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 02:11:09,437 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:11:09,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 02:11:09,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:11:09,438 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2019-11-07 02:11:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:11:09,552 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-11-07 02:11:09,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:11:09,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-07 02:11:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:11:09,556 INFO L225 Difference]: With dead ends: 56 [2019-11-07 02:11:09,556 INFO L226 Difference]: Without dead ends: 33 [2019-11-07 02:11:09,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-07 02:11:09,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-07 02:11:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-07 02:11:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-07 02:11:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-11-07 02:11:09,569 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 18 [2019-11-07 02:11:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:11:09,569 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-11-07 02:11:09,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 02:11:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-11-07 02:11:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-07 02:11:09,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:11:09,571 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:11:09,572 INFO L410 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:11:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:11:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1037557495, now seen corresponding path program 1 times [2019-11-07 02:11:09,572 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:11:09,572 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103450116] [2019-11-07 02:11:09,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:11:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:11:09,703 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103450116] [2019-11-07 02:11:09,704 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:11:09,704 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:11:09,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557492123] [2019-11-07 02:11:09,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:11:09,706 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:11:09,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:11:09,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:11:09,707 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2019-11-07 02:11:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:11:09,767 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-11-07 02:11:09,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:11:09,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-07 02:11:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:11:09,773 INFO L225 Difference]: With dead ends: 55 [2019-11-07 02:11:09,773 INFO L226 Difference]: Without dead ends: 34 [2019-11-07 02:11:09,774 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:11:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-07 02:11:09,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-07 02:11:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 02:11:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-11-07 02:11:09,783 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 20 [2019-11-07 02:11:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:11:09,784 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-11-07 02:11:09,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:11:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-11-07 02:11:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-07 02:11:09,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:11:09,788 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:11:09,789 INFO L410 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:11:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:11:09,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1990611584, now seen corresponding path program 1 times [2019-11-07 02:11:09,793 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:11:09,793 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708249309] [2019-11-07 02:11:09,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:11:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:11:09,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708249309] [2019-11-07 02:11:09,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534241588] [2019-11-07 02:11:09,970 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 [2019-11-07 02:11:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:10,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 02:11:10,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:11:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:11:10,128 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:11:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 02:11:10,223 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 02:11:10,223 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [9] total 9 [2019-11-07 02:11:10,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581551958] [2019-11-07 02:11:10,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 02:11:10,224 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:11:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 02:11:10,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-07 02:11:10,225 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 8 states. [2019-11-07 02:11:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:11:10,378 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-07 02:11:10,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 02:11:10,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-11-07 02:11:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:11:10,381 INFO L225 Difference]: With dead ends: 47 [2019-11-07 02:11:10,381 INFO L226 Difference]: Without dead ends: 44 [2019-11-07 02:11:10,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-07 02:11:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-07 02:11:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-11-07 02:11:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-07 02:11:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-07 02:11:10,393 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2019-11-07 02:11:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:11:10,396 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-07 02:11:10,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 02:11:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-07 02:11:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-07 02:11:10,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:11:10,398 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:11:10,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:11:10,604 INFO L410 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:11:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:11:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1856453461, now seen corresponding path program 1 times [2019-11-07 02:11:10,605 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:11:10,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690383764] [2019-11-07 02:11:10,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:11:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:11:11,026 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690383764] [2019-11-07 02:11:11,026 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679865418] [2019-11-07 02:11:11,026 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 [2019-11-07 02:11:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:11:11,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-07 02:11:11,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:11:11,204 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-07 02:11:11,205 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:11,212 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:11,213 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:11:11,213 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-07 02:11:11,326 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:11,326 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-07 02:11:11,327 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:11,593 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-11-07 02:11:11,594 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:11,605 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_77|], 6=[|v_#memory_$Pointer$.base_83|, |v_#memory_$Pointer$.offset_83|], 13=[|v_#memory_$Pointer$.base_84|, |v_#memory_$Pointer$.offset_84|]} [2019-11-07 02:11:11,642 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 02:11:11,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:11:11,653 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 935 treesize of output 301 [2019-11-07 02:11:11,654 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:11,829 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-11-07 02:11:11,830 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:11,843 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:11:11,986 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-11-07 02:11:11,987 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:12,010 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:11:12,128 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-11-07 02:11:12,129 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:12,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:11:12,363 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-11-07 02:11:12,364 INFO L341 Elim1Store]: treesize reduction 939, result has 56.4 percent of original size [2019-11-07 02:11:12,364 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 587 treesize of output 1687 [2019-11-07 02:11:12,366 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:12,516 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-11-07 02:11:12,516 INFO L567 ElimStorePlain]: treesize reduction 1101, result has 34.9 percent of original size [2019-11-07 02:11:12,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:11:12,527 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 64 [2019-11-07 02:11:12,528 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:12,559 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:12,579 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:11:12,580 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:3062, output treesize:93 [2019-11-07 02:11:12,877 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_int|], 6=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2019-11-07 02:11:12,882 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 02:11:12,883 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2019-11-07 02:11:12,883 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:12,902 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:12,927 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:12,928 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 74 [2019-11-07 02:11:12,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:12,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:12,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:12,934 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:12,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:12,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:12,937 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:11:12,963 INFO L567 ElimStorePlain]: treesize reduction 36, result has 50.0 percent of original size [2019-11-07 02:11:12,968 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2019-11-07 02:11:12,969 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-07 02:11:12,974 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:12,974 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:11:12,975 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:110, output treesize:3 [2019-11-07 02:11:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:11:12,982 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:11:13,630 WARN L191 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-11-07 02:11:14,178 WARN L191 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-11-07 02:11:14,603 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-07 02:11:15,293 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-07 02:11:15,369 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_77|], 2=[|v_#memory_int_87|], 7=[|v_#memory_$Pointer$.base_83|, |v_#memory_$Pointer$.offset_83|], 13=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2019-11-07 02:11:15,519 INFO L341 Elim1Store]: treesize reduction 628, result has 49.5 percent of original size [2019-11-07 02:11:15,520 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 936 treesize of output 616 [2019-11-07 02:11:15,521 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-07 02:11:15,782 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-11-07 02:11:15,782 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:15,842 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:15,843 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 678 treesize of output 685 [2019-11-07 02:11:15,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:15,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:15,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:11:15,851 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-11-07 02:11:16,052 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-11-07 02:11:16,053 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:11:16,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:11:16,256 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:178) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:294) ... 21 more [2019-11-07 02:11:16,263 INFO L168 Benchmark]: Toolchain (without parser) took 9134.61 ms. Allocated memory was 144.2 MB in the beginning and 283.6 MB in the end (delta: 139.5 MB). Free memory was 100.4 MB in the beginning and 237.6 MB in the end (delta: -137.2 MB). Peak memory consumption was 116.2 MB. Max. memory is 7.1 GB. [2019-11-07 02:11:16,264 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 02:11:16,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.97 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 167.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-11-07 02:11:16,267 INFO L168 Benchmark]: Boogie Preprocessor took 75.88 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 163.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-11-07 02:11:16,271 INFO L168 Benchmark]: RCFGBuilder took 1023.36 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 89.5 MB in the end (delta: 74.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. [2019-11-07 02:11:16,276 INFO L168 Benchmark]: TraceAbstraction took 7334.17 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 89.5 MB in the beginning and 237.6 MB in the end (delta: -148.1 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2019-11-07 02:11:16,279 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.97 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 167.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.88 ms. Allocated memory is still 201.9 MB. Free memory was 167.2 MB in the beginning and 163.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1023.36 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 89.5 MB in the end (delta: 74.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7334.17 ms. Allocated memory was 201.9 MB in the beginning and 283.6 MB in the end (delta: 81.8 MB). Free memory was 89.5 MB in the beginning and 237.6 MB in the end (delta: -148.1 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...