/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/list-ext2-properties/simple_and_skiplist_2lvl-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:54:01,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:54:01,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:54:01,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:54:01,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:54:01,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:54:01,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:54:01,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:54:01,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:54:01,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:54:01,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:54:01,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:54:01,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:54:01,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:54:01,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:54:01,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:54:01,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:54:01,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:54:01,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:54:01,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:54:01,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:54:01,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:54:01,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:54:01,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:54:01,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:54:01,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:54:01,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:54:01,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:54:01,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:54:01,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:54:01,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:54:01,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:54:01,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:54:01,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:54:01,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:54:01,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:54:01,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:54:01,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:54:01,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:54:01,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:54:01,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:54:01,689 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 03:54:01,715 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:54:01,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:54:01,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:54:01,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:54:01,717 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:54:01,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:54:01,717 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:54:01,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:54:01,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:54:01,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:54:01,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:54:01,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:54:01,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:54:01,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:54:01,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:54:01,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:54:01,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:54:01,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:54:01,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:54:01,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:54:01,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:54:01,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:54:01,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:54:01,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:54:01,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:54:01,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:54:01,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:54:01,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:54:01,723 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 03:54:02,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:54:02,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:54:02,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:54:02,028 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:54:02,028 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:54:02,029 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2019-11-07 03:54:02,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c7d3e1b2/d40d84c9237247c4b6b46f7b4295dedd/FLAG0868b4c4e [2019-11-07 03:54:02,657 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:54:02,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-2.i [2019-11-07 03:54:02,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c7d3e1b2/d40d84c9237247c4b6b46f7b4295dedd/FLAG0868b4c4e [2019-11-07 03:54:02,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c7d3e1b2/d40d84c9237247c4b6b46f7b4295dedd [2019-11-07 03:54:02,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:54:02,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:54:03,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:54:03,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:54:03,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:54:03,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:02" (1/1) ... [2019-11-07 03:54:03,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663f26a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03, skipping insertion in model container [2019-11-07 03:54:03,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:02" (1/1) ... [2019-11-07 03:54:03,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:54:03,129 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:54:03,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:54:03,641 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:54:03,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:54:03,767 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:54:03,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03 WrapperNode [2019-11-07 03:54:03,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:54:03,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:54:03,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:54:03,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:54:03,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... [2019-11-07 03:54:03,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:54:03,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:54:03,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:54:03,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:54:03,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:54:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:54:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:54:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 03:54:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 03:54:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 03:54:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die [2019-11-07 03:54:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sl_with_head_and_tail [2019-11-07 03:54:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_random_insert [2019-11-07 03:54:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sl [2019-11-07 03:54:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:54:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:54:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:54:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 03:54:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 03:54:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 03:54:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 03:54:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 03:54:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 03:54:03,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 03:54:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 03:54:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 03:54:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 03:54:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 03:54:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 03:54:03,918 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 03:54:03,919 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 03:54:03,920 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 03:54:03,921 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 03:54:03,922 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 03:54:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 03:54:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 03:54:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 03:54:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 03:54:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 03:54:03,923 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 03:54:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 03:54:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 03:54:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 03:54:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 03:54:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 03:54:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 03:54:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 03:54:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 03:54:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 03:54:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 03:54:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 03:54:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 03:54:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 03:54:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 03:54:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 03:54:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 03:54:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 03:54:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 03:54:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 03:54:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 03:54:03,931 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 03:54:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 03:54:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die [2019-11-07 03:54:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:54:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure create_sl_with_head_and_tail [2019-11-07 03:54:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:54:03,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:54:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure sl_random_insert [2019-11-07 03:54:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sl [2019-11-07 03:54:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:54:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:54:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:54:03,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:54:03,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:54:03,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:54:04,308 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 03:54:04,893 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:54:04,893 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-07 03:54:04,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:04 BoogieIcfgContainer [2019-11-07 03:54:04,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:54:04,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:54:04,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:54:04,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:54:04,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:54:02" (1/3) ... [2019-11-07 03:54:04,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732e1454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:54:04, skipping insertion in model container [2019-11-07 03:54:04,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:03" (2/3) ... [2019-11-07 03:54:04,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732e1454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:54:04, skipping insertion in model container [2019-11-07 03:54:04,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:04" (3/3) ... [2019-11-07 03:54:04,904 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-2.i [2019-11-07 03:54:04,914 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:54:04,929 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:54:04,964 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:54:04,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:54:04,990 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:54:04,990 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:54:04,990 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:54:04,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:54:04,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:54:04,991 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:54:04,991 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:54:05,011 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-11-07 03:54:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 03:54:05,017 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:05,019 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:05,021 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1485717068, now seen corresponding path program 1 times [2019-11-07 03:54:05,037 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:05,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711949176] [2019-11-07 03:54:05,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:05,180 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 03:54:05,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711949176] [2019-11-07 03:54:05,182 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:54:05,182 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 03:54:05,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666811567] [2019-11-07 03:54:05,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 03:54:05,188 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:05,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 03:54:05,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 03:54:05,206 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-11-07 03:54:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:05,235 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2019-11-07 03:54:05,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 03:54:05,237 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-11-07 03:54:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:05,246 INFO L225 Difference]: With dead ends: 77 [2019-11-07 03:54:05,246 INFO L226 Difference]: Without dead ends: 17 [2019-11-07 03:54:05,250 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 03:54:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-07 03:54:05,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-07 03:54:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-07 03:54:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-11-07 03:54:05,286 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2019-11-07 03:54:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:05,287 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-11-07 03:54:05,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 03:54:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-11-07 03:54:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 03:54:05,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:05,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:05,288 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1630048670, now seen corresponding path program 1 times [2019-11-07 03:54:05,289 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:05,289 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458856050] [2019-11-07 03:54:05,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:05,407 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 03:54:05,409 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458856050] [2019-11-07 03:54:05,409 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:54:05,409 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 03:54:05,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802907699] [2019-11-07 03:54:05,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 03:54:05,412 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:05,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 03:54:05,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:54:05,414 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-11-07 03:54:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:05,534 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-11-07 03:54:05,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 03:54:05,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-07 03:54:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:05,538 INFO L225 Difference]: With dead ends: 32 [2019-11-07 03:54:05,538 INFO L226 Difference]: Without dead ends: 30 [2019-11-07 03:54:05,539 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 03:54:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-07 03:54:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2019-11-07 03:54:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 03:54:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-07 03:54:05,550 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2019-11-07 03:54:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:05,551 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-07 03:54:05,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 03:54:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-07 03:54:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 03:54:05,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:05,552 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:05,553 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:05,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1874817408, now seen corresponding path program 1 times [2019-11-07 03:54:05,553 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:05,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672827912] [2019-11-07 03:54:05,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:05,768 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672827912] [2019-11-07 03:54:05,768 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149158767] [2019-11-07 03:54:05,769 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 03:54:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:05,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-07 03:54:05,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:54:06,047 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 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-07 03:54:06,048 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 03:54:06,057 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 03:54:06,062 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 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-07 03:54:06,063 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 03:54:06,071 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 03:54:06,072 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 03:54:06,072 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-11-07 03:54:06,096 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-07 03:54:06,097 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 03:54:06,104 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 03:54:06,111 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-07 03:54:06,114 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 03:54:06,119 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 03:54:06,119 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 03:54:06,120 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-07 03:54:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:06,122 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:54:06,163 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2019-11-07 03:54:06,165 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-07 03:54:06,178 INFO L567 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2019-11-07 03:54:06,178 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_57| vanished before elimination [2019-11-07 03:54:06,179 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-07 03:54:06,179 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-11-07 03:54:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:06,201 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122096534] [2019-11-07 03:54:06,226 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-07 03:54:06,226 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:54:06,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:54:06,239 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:54:06,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:54:06,348 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 03:54:06,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:54:06,696 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:54:07,135 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2019-11-07 03:54:07,294 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-11-07 03:54:11,702 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-07 03:54:12,196 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 03:54:12,196 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 6, 5] total 18 [2019-11-07 03:54:12,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795872206] [2019-11-07 03:54:12,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 03:54:12,198 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:12,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 03:54:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=235, Unknown=2, NotChecked=0, Total=306 [2019-11-07 03:54:12,199 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 12 states. [2019-11-07 03:54:18,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:18,552 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-11-07 03:54:18,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 03:54:18,555 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-11-07 03:54:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:18,556 INFO L225 Difference]: With dead ends: 27 [2019-11-07 03:54:18,556 INFO L226 Difference]: Without dead ends: 19 [2019-11-07 03:54:18,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=75, Invalid=265, Unknown=2, NotChecked=0, Total=342 [2019-11-07 03:54:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-07 03:54:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-07 03:54:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 03:54:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-07 03:54:18,560 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2019-11-07 03:54:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:18,561 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-07 03:54:18,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 03:54:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-07 03:54:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 03:54:18,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:18,562 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:18,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:54:18,763 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:18,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1166549193, now seen corresponding path program 1 times [2019-11-07 03:54:18,765 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:18,765 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234849338] [2019-11-07 03:54:18,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:18,936 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234849338] [2019-11-07 03:54:18,936 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989070879] [2019-11-07 03:54:18,936 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 03:54:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:19,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-07 03:54:19,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:54:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:19,270 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:54:23,144 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 175 DAG size of output: 38 [2019-11-07 03:54:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:23,316 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2095876817] [2019-11-07 03:54:23,319 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-07 03:54:23,319 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:54:23,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:54:23,320 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:54:23,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:54:23,369 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 03:54:24,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:54:24,442 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:54:25,045 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 03:54:25,045 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 27 [2019-11-07 03:54:25,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997389610] [2019-11-07 03:54:25,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-07 03:54:25,046 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-07 03:54:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=620, Unknown=1, NotChecked=0, Total=702 [2019-11-07 03:54:25,048 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 27 states. [2019-11-07 03:54:25,428 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-11-07 03:54:25,873 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-11-07 03:54:26,020 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-11-07 03:54:26,506 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-11-07 03:54:26,667 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-11-07 03:54:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:26,822 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-11-07 03:54:26,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 03:54:26,823 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 17 [2019-11-07 03:54:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:26,823 INFO L225 Difference]: With dead ends: 26 [2019-11-07 03:54:26,824 INFO L226 Difference]: Without dead ends: 24 [2019-11-07 03:54:26,825 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=210, Invalid=1121, Unknown=1, NotChecked=0, Total=1332 [2019-11-07 03:54:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-07 03:54:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-07 03:54:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 03:54:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-07 03:54:26,829 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2019-11-07 03:54:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:26,830 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-07 03:54:26,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-07 03:54:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-07 03:54:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-07 03:54:26,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:26,831 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:27,034 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:54:27,035 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2091478713, now seen corresponding path program 1 times [2019-11-07 03:54:27,035 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:27,036 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604294740] [2019-11-07 03:54:27,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:27,236 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604294740] [2019-11-07 03:54:27,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039068585] [2019-11-07 03:54:27,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:54:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:27,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-07 03:54:27,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:54:27,735 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2019-11-07 03:54:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:27,931 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:54:28,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:54:28,229 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 03:54:28,235 INFO L168 Benchmark]: Toolchain (without parser) took 25241.02 ms. Allocated memory was 145.8 MB in the beginning and 302.5 MB in the end (delta: 156.8 MB). Free memory was 101.2 MB in the beginning and 112.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 145.2 MB. Max. memory is 7.1 GB. [2019-11-07 03:54:28,235 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-11-07 03:54:28,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.69 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 168.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:54:28,236 INFO L168 Benchmark]: Boogie Preprocessor took 78.80 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 164.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-11-07 03:54:28,236 INFO L168 Benchmark]: RCFGBuilder took 1047.96 ms. Allocated memory is still 203.4 MB. Free memory was 164.8 MB in the beginning and 94.7 MB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2019-11-07 03:54:28,237 INFO L168 Benchmark]: TraceAbstraction took 23336.95 ms. Allocated memory was 203.4 MB in the beginning and 302.5 MB in the end (delta: 99.1 MB). Free memory was 94.0 MB in the beginning and 112.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2019-11-07 03:54:28,239 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 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.69 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 168.0 MB in the end (delta: -67.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.80 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 164.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1047.96 ms. Allocated memory is still 203.4 MB. Free memory was 164.8 MB in the beginning and 94.7 MB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23336.95 ms. Allocated memory was 203.4 MB in the beginning and 302.5 MB in the end (delta: 99.1 MB). Free memory was 94.0 MB in the beginning and 112.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 80.3 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...