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_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:58:33,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:58:33,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:58:33,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:58:33,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:58:33,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:58:33,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:58:33,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:58:33,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:58:33,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:58:33,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:58:33,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:58:33,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:58:33,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:58:33,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:58:33,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:58:33,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:58:33,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:58:33,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:58:33,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:58:33,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:58:33,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:58:33,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:58:33,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:58:33,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:58:33,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:58:33,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:58:33,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:58:33,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:58:33,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:58:33,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:58:33,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:58:33,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:58:33,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:58:33,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:58:33,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:58:33,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:58:33,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:58:33,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:58:33,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:58:33,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:58:33,751 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 02:58:33,768 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:58:33,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:58:33,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:58:33,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:58:33,769 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:58:33,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:58:33,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:58:33,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:58:33,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:58:33,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:58:33,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:58:33,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:58:33,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:58:33,771 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:58:33,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:58:33,772 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:58:33,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:58:33,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:58:33,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:58:33,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:58:33,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:58:33,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:58:33,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:58:33,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:58:33,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:58:33,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:58:33,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:58:33,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:58:33,774 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 02:58:34,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:58:34,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:58:34,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:58:34,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:58:34,050 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:58:34,051 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2019-10-15 02:58:34,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/301dd11e2/29ffcf41052b42ff86d0e7025a6102f3/FLAGf5a38036b [2019-10-15 02:58:34,697 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:58:34,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2019-10-15 02:58:34,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/301dd11e2/29ffcf41052b42ff86d0e7025a6102f3/FLAGf5a38036b [2019-10-15 02:58:34,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/301dd11e2/29ffcf41052b42ff86d0e7025a6102f3 [2019-10-15 02:58:34,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:58:34,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:58:34,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:58:34,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:58:34,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:58:34,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:34" (1/1) ... [2019-10-15 02:58:34,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21180631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:34, skipping insertion in model container [2019-10-15 02:58:34,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:34" (1/1) ... [2019-10-15 02:58:35,005 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:58:35,048 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:58:35,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:58:35,529 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:58:35,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:58:35,626 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:58:35,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35 WrapperNode [2019-10-15 02:58:35,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:58:35,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:58:35,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:58:35,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:58:35,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (1/1) ... [2019-10-15 02:58:35,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:58:35,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:58:35,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:58:35,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:58:35,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (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 02:58:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:58:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:58:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:58:35,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:58:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:58:35,785 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 02:58:35,786 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-15 02:58:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-15 02:58:35,787 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-10-15 02:58:35,788 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2019-10-15 02:58:35,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:58:35,789 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:58:35,790 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:58:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:58:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:58:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:58:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:58:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:58:35,791 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:58:35,792 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:58:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:58:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:58:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:58:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:58:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:58:35,793 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:58:35,794 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:58:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:58:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:58:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:58:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:58:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:58:35,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:58:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:58:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:58:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:58:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:58:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:58:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:58:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:58:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:58:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:58:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:58:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:58:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:58:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:58:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:58:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:58:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:58:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:58:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:58:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:58:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:58:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:58:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:58:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:58:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:58:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:58:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:58:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:58:35,803 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:58:35,804 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:58:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:58:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:58:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 02:58:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:58:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:58:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:58:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:58:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:58:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:58:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:58:36,181 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:58:36,494 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:58:36,495 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-15 02:58:36,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:36 BoogieIcfgContainer [2019-10-15 02:58:36,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:58:36,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:58:36,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:58:36,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:58:36,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:58:34" (1/3) ... [2019-10-15 02:58:36,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f15b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:36, skipping insertion in model container [2019-10-15 02:58:36,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:35" (2/3) ... [2019-10-15 02:58:36,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f15b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:36, skipping insertion in model container [2019-10-15 02:58:36,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:36" (3/3) ... [2019-10-15 02:58:36,505 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2019-10-15 02:58:36,515 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:58:36,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:58:36,535 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:58:36,560 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:58:36,561 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:58:36,561 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:58:36,561 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:58:36,561 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:58:36,562 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:58:36,562 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:58:36,562 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:58:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-10-15 02:58:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 02:58:36,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:36,594 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] [2019-10-15 02:58:36,596 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:36,602 INFO L82 PathProgramCache]: Analyzing trace with hash -665084243, now seen corresponding path program 1 times [2019-10-15 02:58:36,609 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:36,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961450817] [2019-10-15 02:58:36,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:36,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:36,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:58:36,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961450817] [2019-10-15 02:58:36,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022994887] [2019-10-15 02:58:36,749 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 02:58:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:36,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 02:58:36,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:58:36,974 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:58:37,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:58:37,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-15 02:58:37,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265905125] [2019-10-15 02:58:37,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 02:58:37,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:37,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 02:58:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:58:37,048 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-10-15 02:58:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:37,093 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2019-10-15 02:58:37,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 02:58:37,095 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-10-15 02:58:37,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:37,108 INFO L225 Difference]: With dead ends: 105 [2019-10-15 02:58:37,109 INFO L226 Difference]: Without dead ends: 42 [2019-10-15 02:58:37,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:58:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-15 02:58:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-15 02:58:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-15 02:58:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-15 02:58:37,172 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 30 [2019-10-15 02:58:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:37,173 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-15 02:58:37,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 02:58:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-15 02:58:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-15 02:58:37,177 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:37,178 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] [2019-10-15 02:58:37,382 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:37,383 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:37,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:37,384 INFO L82 PathProgramCache]: Analyzing trace with hash -598447700, now seen corresponding path program 1 times [2019-10-15 02:58:37,385 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:37,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221261894] [2019-10-15 02:58:37,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:37,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:37,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:58:37,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221261894] [2019-10-15 02:58:37,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778318902] [2019-10-15 02:58:37,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:37,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 02:58:37,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:37,762 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:58:38,017 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:58:38,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 15 [2019-10-15 02:58:38,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276015803] [2019-10-15 02:58:38,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 02:58:38,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:38,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 02:58:38,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 02:58:38,020 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 9 states. [2019-10-15 02:58:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:38,164 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2019-10-15 02:58:38,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 02:58:38,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-10-15 02:58:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:38,166 INFO L225 Difference]: With dead ends: 74 [2019-10-15 02:58:38,166 INFO L226 Difference]: Without dead ends: 44 [2019-10-15 02:58:38,168 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 02:58:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-15 02:58:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-15 02:58:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-15 02:58:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2019-10-15 02:58:38,176 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 33 [2019-10-15 02:58:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:38,178 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-10-15 02:58:38,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 02:58:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2019-10-15 02:58:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-15 02:58:38,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:38,180 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:58:38,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:38,385 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -528209773, now seen corresponding path program 1 times [2019-10-15 02:58:38,387 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:38,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873717267] [2019-10-15 02:58:38,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:38,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:38,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 02:58:38,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873717267] [2019-10-15 02:58:38,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:58:38,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 02:58:38,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51513411] [2019-10-15 02:58:38,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 02:58:38,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 02:58:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 02:58:38,529 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2019-10-15 02:58:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:38,697 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-10-15 02:58:38,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 02:58:38,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-10-15 02:58:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:38,701 INFO L225 Difference]: With dead ends: 61 [2019-10-15 02:58:38,701 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 02:58:38,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-15 02:58:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 02:58:38,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2019-10-15 02:58:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-15 02:58:38,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-10-15 02:58:38,716 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 37 [2019-10-15 02:58:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:38,717 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-10-15 02:58:38,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 02:58:38,717 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-10-15 02:58:38,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 02:58:38,718 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:38,718 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:58:38,719 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:38,719 INFO L82 PathProgramCache]: Analyzing trace with hash 653487607, now seen corresponding path program 1 times [2019-10-15 02:58:38,719 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:38,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617053346] [2019-10-15 02:58:38,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:38,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:38,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:58:38,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617053346] [2019-10-15 02:58:38,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814660245] [2019-10-15 02:58:38,895 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 [2019-10-15 02:58:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:39,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-15 02:58:39,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:58:39,023 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 02:58:39,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1298634378] [2019-10-15 02:58:39,262 INFO L162 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-10-15 02:58:39,262 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:58:39,277 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:58:39,288 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:58:39,289 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:58:39,425 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:58:39,716 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:42,685 INFO L199 IcfgInterpreter]: Interpreting procedure sll_length with input of size 28 for LOIs [2019-10-15 02:58:42,719 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 46 for LOIs [2019-10-15 02:58:42,850 INFO L199 IcfgInterpreter]: Interpreting procedure _get_nondet_int with input of size 37 for LOIs [2019-10-15 02:58:42,875 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:58:42,877 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:58:43,068 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2019-10-15 02:58:43,481 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-15 02:58:45,232 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-10-15 02:58:45,832 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-10-15 02:58:45,868 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:58:45,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 26] total 40 [2019-10-15 02:58:45,869 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442723389] [2019-10-15 02:58:45,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-15 02:58:45,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:45,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-15 02:58:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1426, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 02:58:45,872 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 40 states. [2019-10-15 02:58:46,341 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-10-15 02:58:46,742 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-10-15 02:58:47,171 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-10-15 02:58:49,196 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-10-15 02:58:49,416 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-10-15 02:58:49,845 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2019-10-15 02:58:50,908 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-10-15 02:58:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:51,642 INFO L93 Difference]: Finished difference Result 134 states and 162 transitions. [2019-10-15 02:58:51,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-10-15 02:58:51,643 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 38 [2019-10-15 02:58:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:51,646 INFO L225 Difference]: With dead ends: 134 [2019-10-15 02:58:51,647 INFO L226 Difference]: Without dead ends: 99 [2019-10-15 02:58:51,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=601, Invalid=6371, Unknown=0, NotChecked=0, Total=6972 [2019-10-15 02:58:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-10-15 02:58:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2019-10-15 02:58:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-15 02:58:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2019-10-15 02:58:51,669 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 38 [2019-10-15 02:58:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:51,669 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2019-10-15 02:58:51,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-15 02:58:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2019-10-15 02:58:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 02:58:51,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:51,671 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 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] [2019-10-15 02:58:51,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:51,876 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash 723117936, now seen corresponding path program 2 times [2019-10-15 02:58:51,877 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:51,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604807622] [2019-10-15 02:58:51,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:51,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:51,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 02:58:52,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604807622] [2019-10-15 02:58:52,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347239294] [2019-10-15 02:58:52,039 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 [2019-10-15 02:58:52,213 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-15 02:58:52,213 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 02:58:52,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 44 conjunts are in the unsatisfiable core [2019-10-15 02:58:52,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:56,681 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:57,246 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 25 [2019-10-15 02:58:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 02:58:57,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121871310] [2019-10-15 02:58:57,272 INFO L162 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-10-15 02:58:57,272 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:58:57,273 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:58:57,273 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:58:57,273 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:58:57,298 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:58:57,468 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:59,445 INFO L199 IcfgInterpreter]: Interpreting procedure sll_length with input of size 28 for LOIs [2019-10-15 02:58:59,471 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 39 for LOIs [2019-10-15 02:58:59,586 INFO L199 IcfgInterpreter]: Interpreting procedure _get_nondet_int with input of size 37 for LOIs [2019-10-15 02:58:59,603 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:58:59,607 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:58:59,959 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2019-10-15 02:59:00,707 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-10-15 02:59:07,251 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-10-15 02:59:07,476 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-10-15 02:59:07,477 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:59:07,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 13, 26] total 54 [2019-10-15 02:59:07,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665523808] [2019-10-15 02:59:07,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-10-15 02:59:07,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:07,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-10-15 02:59:07,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2691, Unknown=4, NotChecked=0, Total=2862 [2019-10-15 02:59:07,480 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 54 states. [2019-10-15 02:59:09,906 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-10-15 02:59:10,243 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59