java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:00:10,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:00:10,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:00:10,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:00:10,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:00:10,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:00:10,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:00:10,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:00:10,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:00:10,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:00:10,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:00:10,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:00:10,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:00:10,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:00:10,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:00:10,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:00:10,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:00:10,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:00:10,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:00:10,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:00:10,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:00:10,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:00:10,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:00:10,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:00:10,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:00:10,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:00:10,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:00:10,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:00:10,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:00:10,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:00:10,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:00:10,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:00:10,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:00:10,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:00:10,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:00:10,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:00:10,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:00:10,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:00:10,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:00:10,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:00:10,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:00:10,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:00:10,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:00:10,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:00:10,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:00:10,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:00:10,649 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:00:10,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:00:10,649 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:00:10,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:00:10,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:00:10,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:00:10,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:00:10,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:00:10,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:00:10,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:00:10,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:00:10,651 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:00:10,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:00:10,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:00:10,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:00:10,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:00:10,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:00:10,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:10,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:00:10,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:00:10,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:00:10,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:00:10,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:00:10,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:00:10,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:00:10,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:00:10,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:00:10,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:00:10,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:00:10,976 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:00:10,977 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-10-15 03:00:11,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3393ad41b/1d470d13f3d54e86a06006543b960c57/FLAGead388d65 [2019-10-15 03:00:11,644 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:00:11,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-10-15 03:00:11,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3393ad41b/1d470d13f3d54e86a06006543b960c57/FLAGead388d65 [2019-10-15 03:00:11,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3393ad41b/1d470d13f3d54e86a06006543b960c57 [2019-10-15 03:00:11,997 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:00:11,999 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:00:11,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:12,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:00:12,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:00:12,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:11" (1/1) ... [2019-10-15 03:00:12,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c189135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12, skipping insertion in model container [2019-10-15 03:00:12,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:11" (1/1) ... [2019-10-15 03:00:12,014 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:00:12,056 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:00:12,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:12,521 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:00:12,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:12,642 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:00:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12 WrapperNode [2019-10-15 03:00:12,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:12,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:00:12,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:00:12,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:00:12,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... [2019-10-15 03:00:12,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:00:12,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:00:12,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:00:12,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:00:12,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:12,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:00:12,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:00:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:00:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:00:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 03:00:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 03:00:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-15 03:00:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_last [2019-10-15 03:00:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:00:12,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:00:12,779 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:00:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:00:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:00:12,780 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:00:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:00:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:00:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:00:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:00:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:00:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:00:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:00:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:00:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:00:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:00:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:00:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:00:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:00:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:00:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:00:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:00:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:00:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:00:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:00:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:00:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:00:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:00:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:00:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:00:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:00:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:00:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:00:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:00:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:00:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:00:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:00:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:00:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:00:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:00:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:00:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:00:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:00:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:00:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:00:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:00:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:00:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:00:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:00:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:00:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:00:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:00:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:00:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:00:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:00:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:00:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:00:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:00:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:00:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 03:00:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 03:00:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:00:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:00:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:00:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-15 03:00:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_last [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:00:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:00:13,217 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 03:00:13,485 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:00:13,485 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:00:13,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:13 BoogieIcfgContainer [2019-10-15 03:00:13,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:00:13,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:00:13,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:00:13,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:00:13,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:00:11" (1/3) ... [2019-10-15 03:00:13,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c20877f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:13, skipping insertion in model container [2019-10-15 03:00:13,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:12" (2/3) ... [2019-10-15 03:00:13,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c20877f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:13, skipping insertion in model container [2019-10-15 03:00:13,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:13" (3/3) ... [2019-10-15 03:00:13,495 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2019-10-15 03:00:13,505 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:00:13,512 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:00:13,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:00:13,541 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:00:13,542 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:00:13,542 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:00:13,542 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:00:13,542 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:00:13,543 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:00:13,543 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:00:13,543 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:00:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-10-15 03:00:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:00:13,567 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:13,568 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:13,570 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash 364535095, now seen corresponding path program 1 times [2019-10-15 03:00:13,585 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:13,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907491046] [2019-10-15 03:00:13,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:13,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:13,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:13,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907491046] [2019-10-15 03:00:13,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:13,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:00:13,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191233751] [2019-10-15 03:00:13,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:00:13,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:00:13,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:13,864 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 5 states. [2019-10-15 03:00:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:13,990 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2019-10-15 03:00:13,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:00:13,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-15 03:00:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:14,002 INFO L225 Difference]: With dead ends: 66 [2019-10-15 03:00:14,002 INFO L226 Difference]: Without dead ends: 37 [2019-10-15 03:00:14,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:00:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-15 03:00:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-10-15 03:00:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-15 03:00:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-10-15 03:00:14,049 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2019-10-15 03:00:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:14,049 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-10-15 03:00:14,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:00:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-10-15 03:00:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 03:00:14,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:14,052 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:14,052 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1720674643, now seen corresponding path program 1 times [2019-10-15 03:00:14,053 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:14,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715633345] [2019-10-15 03:00:14,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:14,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715633345] [2019-10-15 03:00:14,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:14,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:14,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973131462] [2019-10-15 03:00:14,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:14,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:14,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:14,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:14,212 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 4 states. [2019-10-15 03:00:14,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:14,240 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-10-15 03:00:14,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:14,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-15 03:00:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:14,242 INFO L225 Difference]: With dead ends: 41 [2019-10-15 03:00:14,242 INFO L226 Difference]: Without dead ends: 38 [2019-10-15 03:00:14,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-15 03:00:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-10-15 03:00:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 03:00:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-15 03:00:14,251 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2019-10-15 03:00:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:14,252 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-15 03:00:14,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-15 03:00:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 03:00:14,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:14,254 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:14,254 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:14,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1872736846, now seen corresponding path program 1 times [2019-10-15 03:00:14,255 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:14,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901551902] [2019-10-15 03:00:14,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:14,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901551902] [2019-10-15 03:00:14,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:14,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:00:14,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133554317] [2019-10-15 03:00:14,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:00:14,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:14,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:00:14,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:00:14,431 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 6 states. [2019-10-15 03:00:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:14,606 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-10-15 03:00:14,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:00:14,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-15 03:00:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:14,609 INFO L225 Difference]: With dead ends: 52 [2019-10-15 03:00:14,609 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 03:00:14,610 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:00:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 03:00:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-15 03:00:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 03:00:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-15 03:00:14,617 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 36 [2019-10-15 03:00:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:14,617 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-15 03:00:14,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:00:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-15 03:00:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-15 03:00:14,619 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:14,619 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:14,620 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash 475312699, now seen corresponding path program 1 times [2019-10-15 03:00:14,621 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:14,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81855483] [2019-10-15 03:00:14,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:14,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81855483] [2019-10-15 03:00:14,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:14,713 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:14,714 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846234586] [2019-10-15 03:00:14,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:14,714 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:14,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:14,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:14,715 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2019-10-15 03:00:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:14,787 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2019-10-15 03:00:14,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:14,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2019-10-15 03:00:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:14,790 INFO L225 Difference]: With dead ends: 56 [2019-10-15 03:00:14,790 INFO L226 Difference]: Without dead ends: 38 [2019-10-15 03:00:14,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-15 03:00:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-10-15 03:00:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-15 03:00:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-10-15 03:00:14,804 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 39 [2019-10-15 03:00:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:14,805 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-10-15 03:00:14,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-10-15 03:00:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-15 03:00:14,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:14,809 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:14,809 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:14,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:14,811 INFO L82 PathProgramCache]: Analyzing trace with hash 838022678, now seen corresponding path program 1 times [2019-10-15 03:00:14,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:14,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409986245] [2019-10-15 03:00:14,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:14,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:00:14,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409986245] [2019-10-15 03:00:14,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249838129] [2019-10-15 03:00:14,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:15,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:00:15,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:00:15,178 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:00:15,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200886141] [2019-10-15 03:00:15,300 INFO L162 IcfgInterpreter]: Started Sifa with 34 locations of interest [2019-10-15 03:00:15,300 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:00:15,306 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:00:15,312 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:00:15,313 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:00:15,446 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:00:15,636 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:17,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:17,292 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.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.quantifier(PartialQuantifierElimination.java:146) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:275) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:263) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:237) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:216) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 03:00:17,304 INFO L168 Benchmark]: Toolchain (without parser) took 5302.79 ms. Allocated memory was 136.8 MB in the beginning and 251.7 MB in the end (delta: 114.8 MB). Free memory was 98.2 MB in the beginning and 99.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:17,304 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 118.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 03:00:17,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.06 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 98.2 MB in the beginning and 164.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:17,305 INFO L168 Benchmark]: Boogie Preprocessor took 70.25 ms. Allocated memory is still 200.8 MB. Free memory was 164.8 MB in the beginning and 161.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:17,306 INFO L168 Benchmark]: RCFGBuilder took 772.18 ms. Allocated memory is still 200.8 MB. Free memory was 161.9 MB in the beginning and 109.6 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:17,315 INFO L168 Benchmark]: TraceAbstraction took 3812.22 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 108.6 MB in the beginning and 99.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:17,318 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 118.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.06 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 98.2 MB in the beginning and 164.8 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.25 ms. Allocated memory is still 200.8 MB. Free memory was 164.8 MB in the beginning and 161.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 772.18 ms. Allocated memory is still 200.8 MB. Free memory was 161.9 MB in the beginning and 109.6 MB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3812.22 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 108.6 MB in the beginning and 99.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 60.2 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...