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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:55:32,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:55:32,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:55:32,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:55:32,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:55:32,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:55:32,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:55:32,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:55:32,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:55:32,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:55:32,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:55:32,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:55:32,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:55:32,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:55:32,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:55:32,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:55:32,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:55:32,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:55:32,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:55:32,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:55:32,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:55:32,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:55:32,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:55:32,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:55:32,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:55:32,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:55:32,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:55:32,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:55:32,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:55:32,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:55:32,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:55:32,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:55:32,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:55:32,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:55:32,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:55:32,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:55:32,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:55:32,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:55:32,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:55:32,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:55:32,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:55:32,550 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 22:55:32,570 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:55:32,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:55:32,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:55:32,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:55:32,573 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:55:32,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:55:32,573 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:55:32,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:55:32,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:55:32,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:55:32,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:55:32,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:55:32,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:55:32,576 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:55:32,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:55:32,576 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:55:32,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:55:32,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:55:32,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:55:32,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:55:32,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:55:32,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:55:32,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:55:32,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:55:32,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:55:32,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:55:32,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:55:32,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:55:32,579 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 22:55:32,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:55:32,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:55:32,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:55:32,879 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:55:32,879 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:55:32,880 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_search_value-2.i [2019-10-13 22:55:32,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62d59ed1/738778ac5b3c4289a8a8e3d207383af7/FLAGb5533db59 [2019-10-13 22:55:33,576 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:55:33,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_search_value-2.i [2019-10-13 22:55:33,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62d59ed1/738778ac5b3c4289a8a8e3d207383af7/FLAGb5533db59 [2019-10-13 22:55:33,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62d59ed1/738778ac5b3c4289a8a8e3d207383af7 [2019-10-13 22:55:33,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:55:33,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:55:33,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:33,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:55:33,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:55:33,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:33" (1/1) ... [2019-10-13 22:55:33,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4c3f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:33, skipping insertion in model container [2019-10-13 22:55:33,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:33" (1/1) ... [2019-10-13 22:55:33,857 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:55:33,898 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:55:34,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:34,363 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:55:34,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:34,480 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:55:34,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34 WrapperNode [2019-10-13 22:55:34,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:34,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:55:34,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:55:34,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:55:34,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (1/1) ... [2019-10-13 22:55:34,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:55:34,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:55:34,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:55:34,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:55:34,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (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 22:55:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:55:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:55:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:55:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:55:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:55:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:55:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:55:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:55:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:55:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:55:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:55:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:55:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:55:34,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:55:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:55:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:55:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:55:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:55:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:55:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:55:34,612 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:55:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:55:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:55:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:55:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:55:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:55:34,613 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:55:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:55:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:55:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:55:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:55:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:55:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:55:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:55:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:55:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:55:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:55:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:55:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:55:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:55:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:55:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:55:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:55:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:55:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:55:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:55:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:55:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:55:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:55:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:55:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:55:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:55:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:55:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:55:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:55:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:55:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:55:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:55:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:55:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:55:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:55:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:55:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:55:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:55:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:55:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:55:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:55:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:55:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:55:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:55:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:55:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:55:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:55:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:55:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:55:35,020 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:55:35,280 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:55:35,280 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 22:55:35,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:35 BoogieIcfgContainer [2019-10-13 22:55:35,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:55:35,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:55:35,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:55:35,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:55:35,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:55:33" (1/3) ... [2019-10-13 22:55:35,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465782fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:35, skipping insertion in model container [2019-10-13 22:55:35,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:34" (2/3) ... [2019-10-13 22:55:35,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465782fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:35, skipping insertion in model container [2019-10-13 22:55:35,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:35" (3/3) ... [2019-10-13 22:55:35,291 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_search_value-2.i [2019-10-13 22:55:35,301 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:55:35,310 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:55:35,322 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:55:35,348 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:55:35,348 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:55:35,348 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:55:35,349 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:55:35,349 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:55:35,349 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:55:35,349 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:55:35,349 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:55:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 22:55:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 22:55:35,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:35,377 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:35,378 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1748319836, now seen corresponding path program 1 times [2019-10-13 22:55:35,394 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:35,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066562541] [2019-10-13 22:55:35,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:35,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:35,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:35,548 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 22:55:35,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066562541] [2019-10-13 22:55:35,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:35,551 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 22:55:35,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816162722] [2019-10-13 22:55:35,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 22:55:35,557 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:35,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 22:55:35,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:55:35,573 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-13 22:55:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:35,597 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-10-13 22:55:35,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 22:55:35,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-13 22:55:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:35,607 INFO L225 Difference]: With dead ends: 33 [2019-10-13 22:55:35,607 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 22:55:35,611 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 22:55:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 22:55:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 22:55:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 22:55:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-13 22:55:35,649 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2019-10-13 22:55:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:35,649 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-13 22:55:35,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 22:55:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-13 22:55:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 22:55:35,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:35,651 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:35,651 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:35,652 INFO L82 PathProgramCache]: Analyzing trace with hash -926616102, now seen corresponding path program 1 times [2019-10-13 22:55:35,652 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:35,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020535037] [2019-10-13 22:55:35,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:35,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:35,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:35,786 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 22:55:35,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020535037] [2019-10-13 22:55:35,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:35,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:55:35,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984782628] [2019-10-13 22:55:35,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:55:35,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:55:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:55:35,792 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2019-10-13 22:55:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:35,867 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-13 22:55:35,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:55:35,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 22:55:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:35,869 INFO L225 Difference]: With dead ends: 25 [2019-10-13 22:55:35,870 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 22:55:35,871 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 22:55:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 22:55:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2019-10-13 22:55:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-13 22:55:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-13 22:55:35,876 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-10-13 22:55:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:35,877 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-13 22:55:35,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:55:35,877 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-13 22:55:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 22:55:35,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:35,878 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:35,878 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:35,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:35,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1339791088, now seen corresponding path program 1 times [2019-10-13 22:55:35,878 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:35,879 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676104268] [2019-10-13 22:55:35,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:35,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:35,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:35,993 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 22:55:35,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676104268] [2019-10-13 22:55:35,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:35,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:55:35,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798064737] [2019-10-13 22:55:35,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:55:35,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:35,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:55:36,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:55:36,000 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-10-13 22:55:36,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:36,040 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-13 22:55:36,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:55:36,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-13 22:55:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:36,042 INFO L225 Difference]: With dead ends: 27 [2019-10-13 22:55:36,043 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 22:55:36,043 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 22:55:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 22:55:36,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-10-13 22:55:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 22:55:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-13 22:55:36,052 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-10-13 22:55:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:36,055 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-13 22:55:36,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:55:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-13 22:55:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 22:55:36,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:36,059 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 22:55:36,059 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash -124297803, now seen corresponding path program 1 times [2019-10-13 22:55:36,066 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:36,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992686200] [2019-10-13 22:55:36,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:36,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:36,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:36,163 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 22:55:36,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992686200] [2019-10-13 22:55:36,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746491076] [2019-10-13 22:55:36,165 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 22:55:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:36,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:55:36,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:36,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:36,388 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 22:55:36,388 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:36,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:36,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:36,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:55:36,438 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 22:55:36,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [575626195] [2019-10-13 22:55:36,466 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 22:55:36,467 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:55:36,474 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:55:36,483 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:55:36,484 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:55:36,717 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:55:37,239 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:55:37,696 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 22:55:37,702 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:55:37,702 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:55:37,703 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 148#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~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)))) [2019-10-13 22:55:37,703 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 88#(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 22:55:37,703 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 22:55:37,704 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$.offset)|))) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:37,704 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 98#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-13 22:55:37,704 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-13 22:55:37,704 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 22:55:37,705 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:37,705 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$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 22:55:37,705 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-13 22:55:37,705 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 22:55:37,705 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:55:37,706 INFO L193 IcfgInterpreter]: Reachable states at location L555-3 satisfy 138#(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 22:55:37,706 INFO L193 IcfgInterpreter]: Reachable states at location L545-3 satisfy 93#(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 22:55:37,706 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 133#true [2019-10-13 22:55:37,706 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 143#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~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)))) [2019-10-13 22:55:38,032 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-10-13 22:55:38,222 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:55:38,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 10] total 17 [2019-10-13 22:55:38,222 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233733125] [2019-10-13 22:55:38,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 22:55:38,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:38,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 22:55:38,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-10-13 22:55:38,227 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2019-10-13 22:55:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:39,175 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-13 22:55:39,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 22:55:39,176 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2019-10-13 22:55:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:39,177 INFO L225 Difference]: With dead ends: 39 [2019-10-13 22:55:39,177 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 22:55:39,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 22:55:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 22:55:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-13 22:55:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 22:55:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-10-13 22:55:39,185 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 18 [2019-10-13 22:55:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:39,185 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-10-13 22:55:39,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 22:55:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-10-13 22:55:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 22:55:39,186 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:39,186 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 22:55:39,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:39,391 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:39,392 INFO L82 PathProgramCache]: Analyzing trace with hash -886164732, now seen corresponding path program 2 times [2019-10-13 22:55:39,392 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:39,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577648193] [2019-10-13 22:55:39,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:39,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:39,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:39,549 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 22:55:39,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577648193] [2019-10-13 22:55:39,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051712597] [2019-10-13 22:55:39,550 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 22:55:39,775 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-13 22:55:39,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 22:55:39,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 22:55:39,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:39,806 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 22:55:39,807 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:39,883 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 22:55:39,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1970254374] [2019-10-13 22:55:39,887 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 22:55:39,888 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:55:39,888 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:55:39,888 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:55:39,889 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:55:39,934 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 22:55:40,260 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 22:55:40,677 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 22:55:40,682 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 22:55:40,683 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 22:55:40,683 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 148#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~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)))) [2019-10-13 22:55:40,683 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 88#(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 22:55:40,684 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 22:55:40,688 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$.offset)|))) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:40,688 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 98#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-13 22:55:40,688 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-13 22:55:40,689 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-13 22:55:40,689 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 22:55:40,690 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$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 22:55:40,690 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-13 22:55:40,690 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 22:55:40,690 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 22:55:40,691 INFO L193 IcfgInterpreter]: Reachable states at location L555-3 satisfy 138#(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 22:55:40,692 INFO L193 IcfgInterpreter]: Reachable states at location L545-3 satisfy 93#(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 22:55:40,692 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 133#true [2019-10-13 22:55:40,693 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 143#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~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)))) [2019-10-13 22:55:41,353 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 22:55:41,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 10] total 23 [2019-10-13 22:55:41,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027039630] [2019-10-13 22:55:41,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 22:55:41,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:41,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 22:55:41,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2019-10-13 22:55:41,357 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 23 states. [2019-10-13 22:55:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:43,354 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2019-10-13 22:55:43,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-10-13 22:55:43,354 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2019-10-13 22:55:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:43,356 INFO L225 Difference]: With dead ends: 63 [2019-10-13 22:55:43,356 INFO L226 Difference]: Without dead ends: 57 [2019-10-13 22:55:43,358 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2019-10-13 22:55:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-13 22:55:43,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-10-13 22:55:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-13 22:55:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2019-10-13 22:55:43,366 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 30 [2019-10-13 22:55:43,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:43,367 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2019-10-13 22:55:43,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 22:55:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2019-10-13 22:55:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 22:55:43,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:43,369 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 22:55:43,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:43,574 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:43,575 INFO L82 PathProgramCache]: Analyzing trace with hash -148102622, now seen corresponding path program 3 times [2019-10-13 22:55:43,575 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:43,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564875148] [2019-10-13 22:55:43,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:43,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:43,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:44,277 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 22:55:44,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564875148] [2019-10-13 22:55:44,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563428386] [2019-10-13 22:55:44,278 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 22:55:45,038 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 22:55:45,039 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 22:55:45,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 114 conjunts are in the unsatisfiable core [2019-10-13 22:55:45,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:46,056 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-13 22:55:46,375 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-10-13 22:55:46,517 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-10-13 22:55:46,673 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2019-10-13 22:55:47,062 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2019-10-13 22:55:47,265 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-10-13 22:55:47,505 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-10-13 22:55:47,787 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2019-10-13 22:55:48,026 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-10-13 22:55:48,329 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-10-13 22:55:48,852 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2019-10-13 22:55:49,157 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-10-13 22:55:49,666 WARN L191 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-10-13 22:55:50,050 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 120 [2019-10-13 22:55:50,396 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 97 [2019-10-13 22:55:50,798 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-10-13 22:55:52,315 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 148 DAG size of output: 96 [2019-10-13 22:55:52,678 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-13 22:55:53,223 WARN L191 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2019-10-13 22:55:53,829 WARN L191 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 161 [2019-10-13 22:55:54,388 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 115 [2019-10-13 22:55:54,929 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 22:55:56,012 WARN L191 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 115 [2019-10-13 22:55:56,373 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-13 22:55:57,203 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 139 [2019-10-13 22:55:58,144 WARN L191 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 208 [2019-10-13 22:55:59,012 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 133 [2019-10-13 22:55:59,761 WARN L191 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-13 22:56:02,624 WARN L191 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 237 DAG size of output: 138 [2019-10-13 22:56:03,071 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 22:56:04,270 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 181 DAG size of output: 163 [2019-10-13 22:56:05,518 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 295 DAG size of output: 261 [2019-10-13 22:56:06,860 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 248 DAG size of output: 157 [2019-10-13 22:56:07,861 WARN L191 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2019-10-13 22:56:10,803 WARN L191 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 283 DAG size of output: 162 [2019-10-13 22:56:11,647 WARN L191 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 165