java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-ext2-properties/simple_search_value-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:55:30,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:55:30,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:55:30,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:55:30,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:55:30,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:55:30,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:55:30,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:55:30,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:55:30,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:55:30,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:55:30,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:55:30,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:55:30,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:55:30,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:55:30,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:55:30,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:55:30,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:55:30,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:55:30,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:55:30,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:55:30,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:55:30,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:55:30,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:55:30,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:55:30,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:55:30,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:55:30,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:55:30,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:55:30,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:55:30,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:55:30,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:55:30,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:55:30,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:55:30,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:55:30,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:55:30,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:55:30,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:55:30,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:55:30,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:55:30,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:55:30,755 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 [2019-10-13 22:55:30,774 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:55:30,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:55:30,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:55:30,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:55:30,776 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:55:30,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:55:30,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:55:30,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:55:30,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:55:30,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:55:30,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:55:30,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:55:30,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:55:30,779 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:55:30,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:55:30,780 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:55:30,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:55:30,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:55:30,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:55:30,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:55:30,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:55:30,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:55:30,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:55:30,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:55:30,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:55:30,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:55:30,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:55:30,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:55:30,782 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 [2019-10-13 22:55:31,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:55:31,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:55:31,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:55:31,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:55:31,098 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:55:31,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_search_value-1.i [2019-10-13 22:55:31,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50c986e3/ee0cf2292056490d9f7117d0270c62d1/FLAG1ed5be3ee [2019-10-13 22:55:31,787 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:55:31,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_search_value-1.i [2019-10-13 22:55:31,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50c986e3/ee0cf2292056490d9f7117d0270c62d1/FLAG1ed5be3ee [2019-10-13 22:55:32,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50c986e3/ee0cf2292056490d9f7117d0270c62d1 [2019-10-13 22:55:32,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:55:32,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:55:32,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:32,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:55:32,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:55:32,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a33d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32, skipping insertion in model container [2019-10-13 22:55:32,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,090 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:55:32,148 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:55:32,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:32,592 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:55:32,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:32,688 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:55:32,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32 WrapperNode [2019-10-13 22:55:32,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:32,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:55:32,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:55:32,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:55:32,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (1/1) ... [2019-10-13 22:55:32,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:55:32,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:55:32,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:55:32,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:55:32,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (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 [2019-10-13 22:55:32,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:55:32,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:55:32,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:55:32,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:55:32,825 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:55:32,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:55:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:55:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:55:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:55:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:55:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:55:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:55:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:55:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:55:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:55:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:55:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:55:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:55:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:55:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:55:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:55:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:55:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:55:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:55:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:55:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:55:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:55:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:55:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:55:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:55:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:55:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:55:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:55:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:55:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:55:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:55:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:55:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:55:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:55:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:55:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:55:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:55:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:55:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:55:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:55:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:55:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:55:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:55:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:55:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:55:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:55:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:55:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:55:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:55:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:55:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:55:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:55:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:55:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:55:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:55:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:55:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:55:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:55:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:55:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:55:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:55:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:55:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:55:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:55:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:55:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:55:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:55:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:55:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:55:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:55:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:55:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:55:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:55:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:55:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:55:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:55:33,202 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:55:33,450 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:55:33,451 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 22:55:33,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:33 BoogieIcfgContainer [2019-10-13 22:55:33,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:55:33,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:55:33,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:55:33,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:55:33,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:55:32" (1/3) ... [2019-10-13 22:55:33,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb0a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:33, skipping insertion in model container [2019-10-13 22:55:33,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:32" (2/3) ... [2019-10-13 22:55:33,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfb0a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:33, skipping insertion in model container [2019-10-13 22:55:33,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:33" (3/3) ... [2019-10-13 22:55:33,461 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_search_value-1.i [2019-10-13 22:55:33,471 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:55:33,480 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:55:33,491 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:55:33,514 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:55:33,515 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:55:33,515 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:55:33,515 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:55:33,516 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:55:33,516 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:55:33,516 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:55:33,516 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:55:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 22:55:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 22:55:33,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:33,539 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:33,541 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1748319836, now seen corresponding path program 1 times [2019-10-13 22:55:33,554 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:33,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436995241] [2019-10-13 22:55:33,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:33,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:33,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:55:33,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436995241] [2019-10-13 22:55:33,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:33,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 22:55:33,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411538121] [2019-10-13 22:55:33,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 22:55:33,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:33,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 22:55:33,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:55:33,717 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-13 22:55:33,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:33,735 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-10-13 22:55:33,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 22:55:33,737 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-13 22:55:33,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:33,743 INFO L225 Difference]: With dead ends: 33 [2019-10-13 22:55:33,743 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 22:55:33,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:55:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 22:55:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 22:55:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 22:55:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-13 22:55:33,779 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2019-10-13 22:55:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:33,780 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-13 22:55:33,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 22:55:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-13 22:55:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 22:55:33,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:33,781 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:33,782 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:33,782 INFO L82 PathProgramCache]: Analyzing trace with hash -926616102, now seen corresponding path program 1 times [2019-10-13 22:55:33,782 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:33,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92206709] [2019-10-13 22:55:33,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:33,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:33,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:55:33,931 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92206709] [2019-10-13 22:55:33,932 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:33,932 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:55:33,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57790161] [2019-10-13 22:55:33,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:55:33,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:33,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:55:33,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:55:33,937 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2019-10-13 22:55:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:33,992 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-13 22:55:33,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:55:33,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 22:55:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:34,010 INFO L225 Difference]: With dead ends: 25 [2019-10-13 22:55:34,010 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 22:55:34,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:55:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 22:55:34,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2019-10-13 22:55:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-13 22:55:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-13 22:55:34,016 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-10-13 22:55:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:34,017 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-13 22:55:34,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:55:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-13 22:55:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 22:55:34,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:34,018 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:34,018 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:34,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1339791088, now seen corresponding path program 1 times [2019-10-13 22:55:34,019 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:34,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799418180] [2019-10-13 22:55:34,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:34,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:34,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:34,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799418180] [2019-10-13 22:55:34,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:34,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:55:34,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234703939] [2019-10-13 22:55:34,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:55:34,085 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:55:34,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:55:34,086 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-10-13 22:55:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:34,122 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-13 22:55:34,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:55:34,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 22:55:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:34,123 INFO L225 Difference]: With dead ends: 27 [2019-10-13 22:55:34,123 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 22:55:34,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:55:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 22:55:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-10-13 22:55:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 22:55:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-13 22:55:34,129 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-10-13 22:55:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:34,130 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-13 22:55:34,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:55:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-13 22:55:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 22:55:34,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:34,131 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:34,131 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:34,132 INFO L82 PathProgramCache]: Analyzing trace with hash -124297803, now seen corresponding path program 1 times [2019-10-13 22:55:34,132 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:34,132 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061183210] [2019-10-13 22:55:34,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:34,133 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:34,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:34,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061183210] [2019-10-13 22:55:34,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772006873] [2019-10-13 22:55:34,234 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 [2019-10-13 22:55:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:34,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:55:34,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:34,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:34,436 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:34,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:34,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:34,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:34,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1307112654] [2019-10-13 22:55:34,510 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 22:55:34,510 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:55:34,518 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:55:34,527 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:55:34,528 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:55:34,758 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:55:35,248 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:55:35,638 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 22:55:35,644 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:55:35,645 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:55:35,645 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 143#(and (= 0 |main_#t~malloc5.offset|) (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|) (<= |main_#t~malloc5.offset| 0)) [2019-10-13 22:55:35,645 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 152#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 22:55:35,646 INFO L193 IcfgInterpreter]: Reachable states at location L538-3 satisfy 43#(and (<= |main_#t~malloc2.offset| 0) (or (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= main_~a~0.offset 0)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= 0 main_~a~0.base)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:35,646 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 88#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-13 22:55:35,646 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 138#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-13 22:55:35,646 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-13 22:55:35,647 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 22:55:35,647 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:35,647 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 22:55:35,647 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-13 22:55:35,647 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 157#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:35,648 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:55:35,648 INFO L193 IcfgInterpreter]: Reachable states at location L555-3 satisfy 128#(and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (= 0 main_~p~0.base) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (= main_~p~0.offset 0)) [2019-10-13 22:55:35,648 INFO L193 IcfgInterpreter]: Reachable states at location L545-3 satisfy 148#(and (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (or (and (= 0 |main_#t~malloc5.offset|) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (not (= main_~t~0.base 0)) (< |#StackHeapBarrier| |main_#t~malloc5.base|)) (and (= 0 |main_#t~malloc5.offset|) (not (= main_~t~0.offset 0)) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|))) (<= |main_#t~malloc5.offset| 0)) [2019-10-13 22:55:35,648 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 123#true [2019-10-13 22:55:35,649 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 133#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-13 22:55:36,279 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:55:36,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 10] total 17 [2019-10-13 22:55:36,280 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989490356] [2019-10-13 22:55:36,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 22:55:36,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:36,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 22:55:36,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-10-13 22:55:36,286 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2019-10-13 22:55:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:37,313 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-13 22:55:37,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 22:55:37,314 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2019-10-13 22:55:37,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:37,315 INFO L225 Difference]: With dead ends: 39 [2019-10-13 22:55:37,316 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 22:55:37,318 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 22:55:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 22:55:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-13 22:55:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 22:55:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-10-13 22:55:37,328 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 18 [2019-10-13 22:55:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:37,329 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-10-13 22:55:37,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 22:55:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-10-13 22:55:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 22:55:37,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:37,331 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:37,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:37,537 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:37,537 INFO L82 PathProgramCache]: Analyzing trace with hash -886164732, now seen corresponding path program 2 times [2019-10-13 22:55:37,538 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:37,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746192965] [2019-10-13 22:55:37,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:37,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:37,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:37,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746192965] [2019-10-13 22:55:37,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409087809] [2019-10-13 22:55:37,684 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 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 [2019-10-13 22:55:37,975 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-13 22:55:37,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 22:55:37,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 22:55:37,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:38,006 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:38,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2052529624] [2019-10-13 22:55:38,070 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 22:55:38,070 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:55:38,071 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:55:38,071 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:55:38,071 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:55:38,113 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:55:38,409 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:55:38,764 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 22:55:38,769 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:55:38,769 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:55:38,770 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 143#(and (= 0 |main_#t~malloc5.offset|) (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|) (<= |main_#t~malloc5.offset| 0)) [2019-10-13 22:55:38,770 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 152#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 22:55:38,770 INFO L193 IcfgInterpreter]: Reachable states at location L538-3 satisfy 43#(and (<= |main_#t~malloc2.offset| 0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (or (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.base|) (not (= main_~a~0.offset 0)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= 0 main_~a~0.base)) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:38,770 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 88#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-13 22:55:38,771 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 138#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-13 22:55:38,774 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-13 22:55:38,774 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 22:55:38,774 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:38,775 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 22:55:38,775 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-13 22:55:38,775 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 157#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:38,775 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:55:38,775 INFO L193 IcfgInterpreter]: Reachable states at location L555-3 satisfy 128#(and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (= 0 main_~p~0.base) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (= main_~p~0.offset 0)) [2019-10-13 22:55:38,776 INFO L193 IcfgInterpreter]: Reachable states at location L545-3 satisfy 148#(and (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (or (and (= 0 |main_#t~malloc5.offset|) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (not (= main_~t~0.base 0)) (< |#StackHeapBarrier| |main_#t~malloc5.base|)) (and (= 0 |main_#t~malloc5.offset|) (not (= main_~t~0.offset 0)) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|))) (<= |main_#t~malloc5.offset| 0)) [2019-10-13 22:55:38,776 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 123#true [2019-10-13 22:55:38,776 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 133#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-13 22:55:39,245 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:55:39,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 10] total 23 [2019-10-13 22:55:39,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431503967] [2019-10-13 22:55:39,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 22:55:39,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 22:55:39,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2019-10-13 22:55:39,249 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 23 states. [2019-10-13 22:55:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:41,252 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2019-10-13 22:55:41,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-10-13 22:55:41,252 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2019-10-13 22:55:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:41,254 INFO L225 Difference]: With dead ends: 63 [2019-10-13 22:55:41,254 INFO L226 Difference]: Without dead ends: 57 [2019-10-13 22:55:41,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2019-10-13 22:55:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-13 22:55:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-10-13 22:55:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-13 22:55:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2019-10-13 22:55:41,264 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 30 [2019-10-13 22:55:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:41,265 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2019-10-13 22:55:41,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 22:55:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2019-10-13 22:55:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 22:55:41,266 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:41,267 INFO L380 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:41,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:41,468 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash -148102622, now seen corresponding path program 3 times [2019-10-13 22:55:41,469 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:41,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434452974] [2019-10-13 22:55:41,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:41,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:41,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-10-13 22:55:42,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434452974] [2019-10-13 22:55:42,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84197012] [2019-10-13 22:55:42,175 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 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 [2019-10-13 22:55:42,545 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 22:55:42,545 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 22:55:42,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 116 conjunts are in the unsatisfiable core [2019-10-13 22:55:42,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:43,820 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-10-13 22:55:43,968 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-10-13 22:55:44,104 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-10-13 22:55:44,512 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-10-13 22:55:44,718 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2019-10-13 22:55:44,950 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-10-13 22:55:45,197 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2019-10-13 22:55:45,434 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2019-10-13 22:55:45,706 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-10-13 22:55:46,120 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2019-10-13 22:55:46,369 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-10-13 22:55:46,818 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-10-13 22:55:47,222 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2019-10-13 22:55:47,539 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2019-10-13 22:55:47,965 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-13 22:55:49,101 WARN L191 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 95 [2019-10-13 22:55:49,533 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-13 22:55:50,190 WARN L191 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 116 [2019-10-13 22:55:50,830 WARN L191 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 159 [2019-10-13 22:55:51,365 WARN L191 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 112 [2019-10-13 22:55:51,921 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-10-13 22:55:53,274 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 185 DAG size of output: 114 [2019-10-13 22:55:53,631 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-13 22:55:54,431 WARN L191 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 138 [2019-10-13 22:55:55,291 WARN L191 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 206 [2019-10-13 22:55:56,384 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 137 [2019-10-13 22:55:57,122 WARN L191 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-13 22:55:59,992 WARN L191 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 233 DAG size of output: 137 [2019-10-13 22:56:00,421 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-10-13 22:56:01,541 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 180 DAG size of output: 162 [2019-10-13 22:56:02,779 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 293 DAG size of output: 259 [2019-10-13 22:56:04,618 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 453 DAG size of output: 163 [2019-10-13 22:56:05,590 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 293