/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-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:54:42,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:54:42,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:54:42,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:54:42,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:54:42,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:54:42,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:54:42,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:54:42,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:54:42,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:54:42,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:54:42,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:54:42,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:54:42,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:54:42,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:54:42,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:54:42,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:54:42,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:54:42,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:54:42,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:54:42,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:54:42,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:54:42,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:54:42,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:54:42,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:54:42,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:54:42,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:54:42,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:54:42,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:54:42,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:54:42,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:54:42,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:54:42,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:54:42,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:54:42,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:54:42,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:54:42,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:54:42,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:54:42,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:54:42,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:54:42,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:54:42,717 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 03:54:42,731 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:54:42,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:54:42,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:54:42,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:54:42,732 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:54:42,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:54:42,733 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:54:42,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:54:42,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:54:42,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:54:42,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:54:42,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:54:42,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:54:42,734 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:54:42,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:54:42,734 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:54:42,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:54:42,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:54:42,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:54:42,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:54:42,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:54:42,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:54:42,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:54:42,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:54:42,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:54:42,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:54:42,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:54:42,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:54:42,737 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 03:54:43,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:54:43,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:54:43,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:54:43,068 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:54:43,069 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:54:43,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-11-07 03:54:43,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30bb0e7a3/d28e11deeabb46f99b3c493e16e53244/FLAG0cdb11c01 [2019-11-07 03:54:43,662 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:54:43,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-11-07 03:54:43,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30bb0e7a3/d28e11deeabb46f99b3c493e16e53244/FLAG0cdb11c01 [2019-11-07 03:54:43,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30bb0e7a3/d28e11deeabb46f99b3c493e16e53244 [2019-11-07 03:54:43,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:54:44,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:54:44,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:54:44,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:54:44,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:54:44,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:43" (1/1) ... [2019-11-07 03:54:44,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c1a550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44, skipping insertion in model container [2019-11-07 03:54:44,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:54:43" (1/1) ... [2019-11-07 03:54:44,020 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:54:44,076 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:54:44,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:54:44,497 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:54:44,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:54:44,623 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:54:44,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44 WrapperNode [2019-11-07 03:54:44,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:54:44,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:54:44,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:54:44,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:54:44,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (1/1) ... [2019-11-07 03:54:44,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:54:44,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:54:44,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:54:44,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:54:44,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (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 03:54:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:54:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:54:44,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 03:54:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 03:54:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 03:54:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-07 03:54:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2019-11-07 03:54:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-11-07 03:54:44,771 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-11-07 03:54:44,772 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2019-11-07 03:54:44,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:54:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:54:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:54:44,772 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 03:54:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 03:54:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 03:54:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 03:54:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 03:54:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 03:54:44,773 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 03:54:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 03:54:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 03:54:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 03:54:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 03:54:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 03:54:44,774 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 03:54:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 03:54:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 03:54:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 03:54:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 03:54:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 03:54:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 03:54:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 03:54:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 03:54:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 03:54:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 03:54:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 03:54:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 03:54:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 03:54:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 03:54:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 03:54:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 03:54:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 03:54:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 03:54:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 03:54:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 03:54:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 03:54:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 03:54:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 03:54:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 03:54:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 03:54:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 03:54:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 03:54:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 03:54:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 03:54:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 03:54:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:54:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 03:54:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 03:54:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 03:54:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 03:54:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 03:54:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 03:54:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 03:54:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 03:54:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 03:54:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 03:54:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 03:54:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 03:54:44,783 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 03:54:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 03:54:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 03:54:44,786 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 03:54:44,787 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 03:54:44,788 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 03:54:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 03:54:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 03:54:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-07 03:54:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:54:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:54:44,789 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:54:44,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:54:44,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:54:44,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:54:44,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:54:45,148 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 03:54:45,543 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:54:45,543 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-07 03:54:45,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:45 BoogieIcfgContainer [2019-11-07 03:54:45,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:54:45,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:54:45,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:54:45,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:54:45,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:54:43" (1/3) ... [2019-11-07 03:54:45,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186499ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:54:45, skipping insertion in model container [2019-11-07 03:54:45,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:54:44" (2/3) ... [2019-11-07 03:54:45,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186499ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:54:45, skipping insertion in model container [2019-11-07 03:54:45,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:54:45" (3/3) ... [2019-11-07 03:54:45,554 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2019-11-07 03:54:45,564 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:54:45,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:54:45,581 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:54:45,603 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:54:45,603 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:54:45,604 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:54:45,604 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:54:45,604 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:54:45,604 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:54:45,605 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:54:45,605 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:54:45,624 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-11-07 03:54:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 03:54:45,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:45,632 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:45,634 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:45,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1546971185, now seen corresponding path program 1 times [2019-11-07 03:54:45,650 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:45,650 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394896475] [2019-11-07 03:54:45,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:45,838 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 03:54:45,838 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394896475] [2019-11-07 03:54:45,839 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:54:45,840 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:54:45,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184678797] [2019-11-07 03:54:45,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:54:45,847 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:45,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:54:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:54:45,863 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2019-11-07 03:54:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:45,950 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2019-11-07 03:54:45,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:54:45,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-07 03:54:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:45,963 INFO L225 Difference]: With dead ends: 117 [2019-11-07 03:54:45,963 INFO L226 Difference]: Without dead ends: 50 [2019-11-07 03:54:45,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:54:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-07 03:54:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-11-07 03:54:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-07 03:54:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2019-11-07 03:54:46,020 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 9 [2019-11-07 03:54:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:46,021 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2019-11-07 03:54:46,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:54:46,021 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2019-11-07 03:54:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 03:54:46,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:46,022 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:46,022 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:46,023 INFO L82 PathProgramCache]: Analyzing trace with hash -626152311, now seen corresponding path program 1 times [2019-11-07 03:54:46,023 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:46,024 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988312177] [2019-11-07 03:54:46,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 03:54:46,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988312177] [2019-11-07 03:54:46,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:54:46,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 03:54:46,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199597897] [2019-11-07 03:54:46,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 03:54:46,125 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 03:54:46,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:54:46,126 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 4 states. [2019-11-07 03:54:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:46,191 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2019-11-07 03:54:46,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:54:46,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-07 03:54:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:46,196 INFO L225 Difference]: With dead ends: 67 [2019-11-07 03:54:46,196 INFO L226 Difference]: Without dead ends: 50 [2019-11-07 03:54:46,198 INFO L630 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 [2019-11-07 03:54:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-07 03:54:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-11-07 03:54:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-07 03:54:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2019-11-07 03:54:46,207 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 13 [2019-11-07 03:54:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:46,207 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2019-11-07 03:54:46,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 03:54:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2019-11-07 03:54:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-07 03:54:46,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:46,209 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:54:46,209 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:46,210 INFO L82 PathProgramCache]: Analyzing trace with hash 227809436, now seen corresponding path program 1 times [2019-11-07 03:54:46,210 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:46,210 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841384695] [2019-11-07 03:54:46,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:46,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841384695] [2019-11-07 03:54:46,371 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:54:46,371 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 03:54:46,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549232419] [2019-11-07 03:54:46,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 03:54:46,372 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:46,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 03:54:46,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 03:54:46,373 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 9 states. [2019-11-07 03:54:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:46,531 INFO L93 Difference]: Finished difference Result 109 states and 135 transitions. [2019-11-07 03:54:46,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 03:54:46,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-11-07 03:54:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:46,533 INFO L225 Difference]: With dead ends: 109 [2019-11-07 03:54:46,533 INFO L226 Difference]: Without dead ends: 70 [2019-11-07 03:54:46,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-07 03:54:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-07 03:54:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-11-07 03:54:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-07 03:54:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2019-11-07 03:54:46,554 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 31 [2019-11-07 03:54:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:46,556 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2019-11-07 03:54:46,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 03:54:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2019-11-07 03:54:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-07 03:54:46,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:46,566 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 03:54:46,566 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1550252586, now seen corresponding path program 2 times [2019-11-07 03:54:46,567 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:46,567 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977973675] [2019-11-07 03:54:46,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:46,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977973675] [2019-11-07 03:54:46,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661259735] [2019-11-07 03:54:46,851 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 03:54:46,970 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 03:54:46,970 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 03:54:46,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 03:54:46,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:54:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 03:54:47,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:54:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 03:54:47,171 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 03:54:47,171 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 17 [2019-11-07 03:54:47,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075814972] [2019-11-07 03:54:47,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:54:47,172 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:47,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:54:47,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-07 03:54:47,173 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2019-11-07 03:54:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:47,290 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2019-11-07 03:54:47,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:54:47,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-11-07 03:54:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:47,292 INFO L225 Difference]: With dead ends: 99 [2019-11-07 03:54:47,293 INFO L226 Difference]: Without dead ends: 85 [2019-11-07 03:54:47,294 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-11-07 03:54:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-07 03:54:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-11-07 03:54:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-07 03:54:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2019-11-07 03:54:47,308 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 35 [2019-11-07 03:54:47,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:47,310 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2019-11-07 03:54:47,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 03:54:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2019-11-07 03:54:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-07 03:54:47,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:47,313 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2019-11-07 03:54:47,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:54:47,520 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:47,520 INFO L82 PathProgramCache]: Analyzing trace with hash -101786895, now seen corresponding path program 1 times [2019-11-07 03:54:47,520 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:47,521 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476261680] [2019-11-07 03:54:47,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 03:54:47,843 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476261680] [2019-11-07 03:54:47,843 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656761037] [2019-11-07 03:54:47,843 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 03:54:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:47,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 03:54:47,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:54:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:48,023 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:54:48,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:54:48,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:54:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:48,394 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 03:54:48,394 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [11] total 18 [2019-11-07 03:54:48,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86773084] [2019-11-07 03:54:48,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 03:54:48,395 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:48,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 03:54:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-11-07 03:54:48,396 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand 15 states. [2019-11-07 03:54:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:54:48,616 INFO L93 Difference]: Finished difference Result 154 states and 194 transitions. [2019-11-07 03:54:48,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 03:54:48,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-11-07 03:54:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:54:48,619 INFO L225 Difference]: With dead ends: 154 [2019-11-07 03:54:48,619 INFO L226 Difference]: Without dead ends: 83 [2019-11-07 03:54:48,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2019-11-07 03:54:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-07 03:54:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2019-11-07 03:54:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-07 03:54:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-11-07 03:54:48,651 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 44 [2019-11-07 03:54:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:54:48,652 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-11-07 03:54:48,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 03:54:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-11-07 03:54:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 03:54:48,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:54:48,655 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1] [2019-11-07 03:54:48,862 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:54:48,862 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:54:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:54:48,863 INFO L82 PathProgramCache]: Analyzing trace with hash -340056939, now seen corresponding path program 1 times [2019-11-07 03:54:48,863 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:54:48,863 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319383759] [2019-11-07 03:54:48,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:54:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 03:54:49,142 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319383759] [2019-11-07 03:54:49,142 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043049048] [2019-11-07 03:54:49,142 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 03:54:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:54:49,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 03:54:49,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:54:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:49,312 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:54:49,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:54:49,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:54:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:54:49,722 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [736353982] [2019-11-07 03:54:49,747 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-11-07 03:54:49,747 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:54:49,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:54:49,759 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:54:49,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:54:49,859 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-11-07 03:54:50,013 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:50,150 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:50,216 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:50,305 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:50,351 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:50,384 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:50,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 03:54:50,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 03:54:51,219 INFO L197 IcfgInterpreter]: Interpreting procedure sll_length with input of size 46 for LOIs [2019-11-07 03:54:51,226 INFO L197 IcfgInterpreter]: Interpreting procedure sll_append with input of size 27 for LOIs [2019-11-07 03:54:51,449 INFO L197 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-11-07 03:54:51,574 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:51,623 INFO L197 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-11-07 03:54:51,702 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:54:51,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:54:51,732 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:54:52,162 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-11-07 03:54:52,373 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2019-11-07 03:54:53,359 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2019-11-07 03:54:53,529 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-11-07 03:54:54,055 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-11-07 03:54:54,499 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 37 [2019-11-07 03:54:54,848 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2019-11-07 03:54:55,383 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 03:54:55,383 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11, 29] total 48 [2019-11-07 03:54:55,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764849458] [2019-11-07 03:54:55,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-07 03:54:55,385 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:54:55,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-07 03:54:55,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2077, Unknown=0, NotChecked=0, Total=2256 [2019-11-07 03:54:55,386 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 48 states. [2019-11-07 03:54:55,641 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-11-07 03:54:55,869 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-11-07 03:54:56,124 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-11-07 03:54:56,697 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 39 [2019-11-07 03:54:57,811 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-11-07 03:54:58,315 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-11-07 03:54:59,780 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-11-07 03:55:00,642 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2019-11-07 03:55:01,160 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-11-07 03:55:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:55:01,403 INFO L93 Difference]: Finished difference Result 231 states and 304 transitions. [2019-11-07 03:55:01,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-11-07 03:55:01,404 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2019-11-07 03:55:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:55:01,407 INFO L225 Difference]: With dead ends: 231 [2019-11-07 03:55:01,407 INFO L226 Difference]: Without dead ends: 164 [2019-11-07 03:55:01,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 95 SyntacticMatches, 13 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=637, Invalid=7373, Unknown=0, NotChecked=0, Total=8010 [2019-11-07 03:55:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-11-07 03:55:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 83. [2019-11-07 03:55:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-07 03:55:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2019-11-07 03:55:01,428 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 47 [2019-11-07 03:55:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:55:01,428 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2019-11-07 03:55:01,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-07 03:55:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2019-11-07 03:55:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-07 03:55:01,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:55:01,430 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1] [2019-11-07 03:55:01,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:55:01,635 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:55:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:55:01,635 INFO L82 PathProgramCache]: Analyzing trace with hash 938002545, now seen corresponding path program 2 times [2019-11-07 03:55:01,636 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:55:01,636 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245388414] [2019-11-07 03:55:01,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:55:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:55:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 03:55:01,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245388414] [2019-11-07 03:55:01,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723902258] [2019-11-07 03:55:01,774 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:55:01,917 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-07 03:55:01,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 03:55:01,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 03:55:01,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:55:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 03:55:01,985 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:55:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 03:55:02,054 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798340361] [2019-11-07 03:55:02,057 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-11-07 03:55:02,057 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:55:02,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:55:02,058 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:55:02,058 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:55:02,077 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-11-07 03:55:02,217 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:02,325 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:02,362 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:02,430 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:02,456 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:02,473 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:02,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 03:55:02,619 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 03:55:02,879 INFO L197 IcfgInterpreter]: Interpreting procedure sll_length with input of size 34 for LOIs [2019-11-07 03:55:02,882 INFO L197 IcfgInterpreter]: Interpreting procedure sll_append with input of size 27 for LOIs [2019-11-07 03:55:02,980 INFO L197 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-11-07 03:55:03,054 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:03,094 INFO L197 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-11-07 03:55:03,179 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:03,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:55:03,202 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:55:03,614 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-11-07 03:55:04,800 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-11-07 03:55:05,357 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-11-07 03:55:06,101 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2019-11-07 03:55:06,558 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 03:55:06,559 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 29] total 46 [2019-11-07 03:55:06,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715503784] [2019-11-07 03:55:06,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-07 03:55:06,560 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:55:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-07 03:55:06,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1897, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 03:55:06,561 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 46 states. [2019-11-07 03:55:06,831 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-11-07 03:55:07,046 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2019-11-07 03:55:07,342 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2019-11-07 03:55:07,585 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-11-07 03:55:08,036 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-11-07 03:55:08,434 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-11-07 03:55:08,791 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-11-07 03:55:09,136 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-11-07 03:55:09,968 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-11-07 03:55:10,500 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-11-07 03:55:10,967 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-11-07 03:55:11,158 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-11-07 03:55:12,129 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-11-07 03:55:13,689 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-11-07 03:55:13,839 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-11-07 03:55:14,081 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-11-07 03:55:14,260 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-11-07 03:55:14,774 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-11-07 03:55:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:55:15,138 INFO L93 Difference]: Finished difference Result 254 states and 326 transitions. [2019-11-07 03:55:15,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-11-07 03:55:15,140 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 50 [2019-11-07 03:55:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:55:15,143 INFO L225 Difference]: With dead ends: 254 [2019-11-07 03:55:15,144 INFO L226 Difference]: Without dead ends: 182 [2019-11-07 03:55:15,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 113 SyntacticMatches, 9 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=858, Invalid=9042, Unknown=0, NotChecked=0, Total=9900 [2019-11-07 03:55:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-07 03:55:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 92. [2019-11-07 03:55:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-07 03:55:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2019-11-07 03:55:15,166 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 50 [2019-11-07 03:55:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:55:15,167 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2019-11-07 03:55:15,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-07 03:55:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2019-11-07 03:55:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-07 03:55:15,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:55:15,169 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2019-11-07 03:55:15,372 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:55:15,373 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:55:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:55:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1614425295, now seen corresponding path program 3 times [2019-11-07 03:55:15,373 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:55:15,374 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954896259] [2019-11-07 03:55:15,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:55:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:55:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:55:15,558 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954896259] [2019-11-07 03:55:15,559 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217164675] [2019-11-07 03:55:15,559 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:55:15,725 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 03:55:15,726 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 03:55:15,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 03:55:15,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:55:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:55:15,759 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:55:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:55:16,272 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1532052895] [2019-11-07 03:55:16,274 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-11-07 03:55:16,274 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:55:16,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:55:16,275 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:55:16,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:55:16,289 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-11-07 03:55:16,358 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:16,504 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:16,564 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:16,646 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:16,667 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:16,697 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:16,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 03:55:16,864 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 03:55:17,100 INFO L197 IcfgInterpreter]: Interpreting procedure sll_length with input of size 46 for LOIs [2019-11-07 03:55:17,106 INFO L197 IcfgInterpreter]: Interpreting procedure sll_append with input of size 29 for LOIs [2019-11-07 03:55:17,255 INFO L197 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-11-07 03:55:17,368 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:17,410 INFO L197 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-11-07 03:55:17,481 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:55:17,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:55:17,510 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:55:17,940 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-11-07 03:55:18,143 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2019-11-07 03:55:19,184 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2019-11-07 03:55:19,712 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2019-11-07 03:55:20,417 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2019-11-07 03:55:20,878 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 03:55:20,879 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 29] total 50 [2019-11-07 03:55:20,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390962124] [2019-11-07 03:55:20,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-07 03:55:20,880 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:55:20,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-07 03:55:20,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2260, Unknown=0, NotChecked=0, Total=2450 [2019-11-07 03:55:20,881 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand 50 states. [2019-11-07 03:55:21,297 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-11-07 03:55:21,545 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2019-11-07 03:55:22,115 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 39 [2019-11-07 03:55:22,968 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2019-11-07 03:55:24,553 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-11-07 03:55:25,006 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-11-07 03:55:25,212 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55