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-properties/alternating_list-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:13:25,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:13:25,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:13:25,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:13:25,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:13:25,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:13:25,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:13:25,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:13:25,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:13:25,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:13:25,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:13:25,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:13:25,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:13:25,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:13:25,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:13:25,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:13:25,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:13:25,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:13:25,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:13:25,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:13:25,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:13:25,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:13:25,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:13:25,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:13:25,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:13:25,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:13:25,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:13:25,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:13:25,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:13:25,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:13:25,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:13:25,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:13:25,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:13:25,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:13:25,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:13:25,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:13:25,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:13:25,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:13:25,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:13:25,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:13:25,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:13:25,628 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 [2019-10-07 13:13:25,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:13:25,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:13:25,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:13:25,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:13:25,645 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:13:25,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:13:25,645 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:13:25,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:13:25,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:13:25,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:13:25,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:13:25,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:13:25,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:13:25,646 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:13:25,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:13:25,647 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:13:25,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:13:25,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:13:25,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:13:25,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:13:25,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:13:25,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:13:25,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:13:25,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:13:25,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:13:25,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:13:25,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:13:25,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:13:25,650 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 [2019-10-07 13:13:25,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:13:25,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:13:26,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:13:26,003 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:13:26,003 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:13:26,004 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-1.i [2019-10-07 13:13:26,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae992a3/37fa387cccc4470a965b7a90516347ad/FLAG466af743a [2019-10-07 13:13:26,659 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:13:26,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-1.i [2019-10-07 13:13:26,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae992a3/37fa387cccc4470a965b7a90516347ad/FLAG466af743a [2019-10-07 13:13:26,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae992a3/37fa387cccc4470a965b7a90516347ad [2019-10-07 13:13:26,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:13:26,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:13:26,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:13:26,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:13:26,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:13:26,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:13:26" (1/1) ... [2019-10-07 13:13:26,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240d376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:26, skipping insertion in model container [2019-10-07 13:13:26,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:13:26" (1/1) ... [2019-10-07 13:13:27,006 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:13:27,070 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:13:27,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:13:27,602 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:13:27,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:13:27,711 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:13:27,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27 WrapperNode [2019-10-07 13:13:27,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:13:27,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:13:27,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:13:27,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:13:27,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (1/1) ... [2019-10-07 13:13:27,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:13:27,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:13:27,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:13:27,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:13:27,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (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 [2019-10-07 13:13:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:13:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:13:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:13:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:13:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-07 13:13:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-07 13:13:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-07 13:13:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:13:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:13:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:13:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:13:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:13:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:13:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:13:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:13:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:13:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:13:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:13:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:13:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:13:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:13:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:13:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:13:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:13:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:13:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:13:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:13:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:13:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:13:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-07 13:13:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-07 13:13:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-07 13:13:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:13:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:13:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:13:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:13:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:13:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:13:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:13:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:13:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:13:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:13:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:13:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:13:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:13:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:13:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:13:27,866 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:13:27,867 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:13:27,868 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:13:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:13:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:13:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:13:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:13:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:13:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:13:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:13:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:13:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:13:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:13:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:13:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:13:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:13:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:13:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:13:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:13:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:13:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:13:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:13:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:13:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:13:28,276 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:13:28,517 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:13:28,518 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-07 13:13:28,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:13:28 BoogieIcfgContainer [2019-10-07 13:13:28,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:13:28,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:13:28,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:13:28,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:13:28,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:13:26" (1/3) ... [2019-10-07 13:13:28,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f61b186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:13:28, skipping insertion in model container [2019-10-07 13:13:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:13:27" (2/3) ... [2019-10-07 13:13:28,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f61b186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:13:28, skipping insertion in model container [2019-10-07 13:13:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:13:28" (3/3) ... [2019-10-07 13:13:28,529 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2019-10-07 13:13:28,540 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:13:28,550 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:13:28,563 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:13:28,590 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:13:28,591 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:13:28,591 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:13:28,591 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:13:28,591 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:13:28,591 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:13:28,591 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:13:28,592 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:13:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-07 13:13:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:13:28,619 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:28,621 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:28,623 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:28,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1233015501, now seen corresponding path program 1 times [2019-10-07 13:13:28,640 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:28,640 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:28,640 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:28,641 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:28,811 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:28,812 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:13:28,812 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:13:28,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:13:28,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:13:28,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:13:28,837 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-07 13:13:28,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:28,865 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2019-10-07 13:13:28,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:13:28,867 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-07 13:13:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:28,877 INFO L225 Difference]: With dead ends: 49 [2019-10-07 13:13:28,877 INFO L226 Difference]: Without dead ends: 20 [2019-10-07 13:13:28,881 INFO L606 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 [2019-10-07 13:13:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-07 13:13:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-07 13:13:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-07 13:13:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-07 13:13:28,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2019-10-07 13:13:28,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:28,921 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-07 13:13:28,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:13:28,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-07 13:13:28,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 13:13:28,922 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:28,922 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:28,923 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:28,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:28,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1724119726, now seen corresponding path program 1 times [2019-10-07 13:13:28,924 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:28,924 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:28,924 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:28,924 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:29,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:29,022 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:13:29,022 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 13:13:29,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:13:29,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:13:29,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:13:29,025 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2019-10-07 13:13:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:29,052 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-10-07 13:13:29,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:13:29,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-07 13:13:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:29,054 INFO L225 Difference]: With dead ends: 37 [2019-10-07 13:13:29,055 INFO L226 Difference]: Without dead ends: 29 [2019-10-07 13:13:29,056 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 13:13:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-07 13:13:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-10-07 13:13:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-07 13:13:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-07 13:13:29,063 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2019-10-07 13:13:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:29,082 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-07 13:13:29,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:13:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-07 13:13:29,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 13:13:29,084 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:29,084 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:29,084 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:29,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:29,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1724126670, now seen corresponding path program 1 times [2019-10-07 13:13:29,085 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:29,085 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:29,086 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:29,086 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:29,169 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:29,169 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:13:29,169 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:13:29,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:13:29,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:13:29,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:13:29,171 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 5 states. [2019-10-07 13:13:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:29,264 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2019-10-07 13:13:29,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:13:29,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-07 13:13:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:29,266 INFO L225 Difference]: With dead ends: 50 [2019-10-07 13:13:29,266 INFO L226 Difference]: Without dead ends: 35 [2019-10-07 13:13:29,267 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:13:29,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-07 13:13:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2019-10-07 13:13:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-07 13:13:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-07 13:13:29,273 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2019-10-07 13:13:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:29,274 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-07 13:13:29,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:13:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-07 13:13:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-07 13:13:29,275 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:29,275 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:29,275 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:29,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1627587372, now seen corresponding path program 1 times [2019-10-07 13:13:29,276 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:29,276 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:29,276 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:29,277 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:29,544 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:29,544 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:13:29,544 INFO L95 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 [2019-10-07 13:13:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:29,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-07 13:13:29,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:13:29,790 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-07 13:13:29,791 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,798 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,798 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,799 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-07 13:13:29,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:29,870 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,871 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-07 13:13:29,872 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,902 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,916 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,916 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_21| vanished before elimination [2019-10-07 13:13:29,922 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-07 13:13:29,923 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,936 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,941 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2019-10-07 13:13:29,942 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,953 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,953 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,954 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:58, output treesize:18 [2019-10-07 13:13:29,986 INFO L341 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-10-07 13:13:29,986 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2019-10-07 13:13:29,987 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,995 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:29,996 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:13:29,996 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:12 [2019-10-07 13:13:30,020 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-10-07 13:13:30,022 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,029 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:30,030 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-07 13:13:30,031 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2019-10-07 13:13:30,069 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-10-07 13:13:30,069 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,075 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:30,076 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,077 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-10-07 13:13:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:30,081 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:13:30,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,160 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:13:30,165 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,172 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:30,173 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-07 13:13:30,173 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:54, output treesize:22 [2019-10-07 13:13:30,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,272 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_25|, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, v_prenex_1, |v_#memory_$Pointer$.offset_24|, v_prenex_4, v_prenex_6, v_prenex_7], 2=[v_prenex_3, |#memory_int|]} [2019-10-07 13:13:30,280 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,288 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,378 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:30,379 INFO L464 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2019-10-07 13:13:30,392 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2019-10-07 13:13:30,394 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,404 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-10-07 13:13:30,405 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,561 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-10-07 13:13:30,562 INFO L567 ElimStorePlain]: treesize reduction 3, result has 98.0 percent of original size [2019-10-07 13:13:30,566 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,571 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,625 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:13:30,625 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_24| vanished before elimination [2019-10-07 13:13:30,625 INFO L464 ElimStorePlain]: Eliminatee v_prenex_4 vanished before elimination [2019-10-07 13:13:30,635 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 6 [2019-10-07 13:13:30,635 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,642 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2019-10-07 13:13:30,643 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,696 INFO L567 ElimStorePlain]: treesize reduction 11, result has 86.1 percent of original size [2019-10-07 13:13:30,696 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-10-07 13:13:30,709 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 165 [2019-10-07 13:13:30,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:13:30,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,716 INFO L496 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:30,943 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2019-10-07 13:13:30,943 INFO L567 ElimStorePlain]: treesize reduction 252, result has 23.2 percent of original size [2019-10-07 13:13:30,953 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 148 [2019-10-07 13:13:30,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:13:30,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:13:30,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:13:30,960 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-10-07 13:13:31,077 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2019-10-07 13:13:31,077 INFO L567 ElimStorePlain]: treesize reduction 234, result has 22.8 percent of original size [2019-10-07 13:13:31,079 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 10 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2019-10-07 13:13:31,080 INFO L221 ElimStorePlain]: Needed 11 recursive calls to eliminate 14 variables, input treesize:211, output treesize:48 [2019-10-07 13:13:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:31,209 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:13:31,240 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:13:31,241 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:13:31,253 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:13:31,275 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:13:31,275 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:13:31,394 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:13:32,936 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:13:32,944 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:13:32,950 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:13:32,951 INFO L193 IcfgInterpreter]: Reachable states at location L523 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |#NULL.offset|) (= main_~a~0.offset |main_#t~malloc2.offset|) (= main_~flag~0 1) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (<= 1 main_~flag~0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |main_#t~malloc2.offset|) (= 0 (select |old(#valid)| 0)) (<= |#NULL.offset| 0) (<= main_~flag~0 1) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0)) [2019-10-07 13:13:32,952 INFO L193 IcfgInterpreter]: Reachable states at location L526-3 satisfy 114#true [2019-10-07 13:13:32,952 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 275#true [2019-10-07 13:13:32,952 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 218#(exists ((v_main_~p~0.base_30 Int) (v_main_~p~0.offset_30 Int)) (and (not (= 1 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) (= main_~a~0.base main_~p~0.base) (= main_~flag~0 0) (= (select (select |#memory_int| v_main_~p~0.base_30) v_main_~p~0.offset_30) 3) (= main_~a~0.offset main_~p~0.offset) (not (= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))))) [2019-10-07 13:13:32,953 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 309#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:13:32,953 INFO L193 IcfgInterpreter]: Reachable states at location L535 satisfy 138#(and (<= main_~t~0.offset 0) (<= |main_#t~malloc4.offset| 0) (<= 0 main_~t~0.offset) (<= 0 main_~flag~0) (= |main_#t~malloc4.offset| 0) (<= main_~flag~0 1) (<= 0 |main_#t~malloc4.offset|)) [2019-10-07 13:13:32,954 INFO L193 IcfgInterpreter]: Reachable states at location L526-1 satisfy 122#(and (<= |main_#t~nondet3| 2147483647) (<= 0 (+ |main_#t~nondet3| 2147483648))) [2019-10-07 13:13:32,954 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)) [2019-10-07 13:13:32,954 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)|)) [2019-10-07 13:13:32,955 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 305#true [2019-10-07 13:13:32,955 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 314#(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)) [2019-10-07 13:13:32,955 INFO L193 IcfgInterpreter]: Reachable states at location L550 satisfy 243#(or (exists ((v_main_~p~0.base_31 Int) (v_main_~p~0.offset_31 Int)) (and (not (= 1 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) (= main_~a~0.base main_~p~0.base) (= main_~flag~0 0) (= main_~a~0.offset main_~p~0.offset) (not (= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) (= (select (select |#memory_int| v_main_~p~0.base_31) v_main_~p~0.offset_31) 3))) (exists ((v_main_~p~0.base_30 Int) (v_main_~p~0.offset_30 Int)) (and (not (= 1 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) (= main_~a~0.base main_~p~0.base) (= main_~flag~0 0) (= (select (select |#memory_int| v_main_~p~0.base_30) v_main_~p~0.offset_30) 3) (= main_~a~0.offset main_~p~0.offset) (not (= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)))))) [2019-10-07 13:13:32,959 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:13:32,962 INFO L193 IcfgInterpreter]: Reachable states at location L542-1 satisfy 300#true [2019-10-07 13:13:32,962 INFO L193 IcfgInterpreter]: Reachable states at location L523-3 satisfy 43#(and (or (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.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) (= main_~flag~0 1) (= |#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$.offset)|)) (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (= 0 |main_#t~malloc2.offset|) (not (= 0 main_~a~0.base)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= main_~flag~0 1) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (<= |main_#t~malloc2.offset| 0) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1 main_~flag~0) (<= main_~flag~0 1)) [2019-10-07 13:13:32,964 INFO L193 IcfgInterpreter]: Reachable states at location L535-3 satisfy 106#true [2019-10-07 13:13:32,964 INFO L193 IcfgInterpreter]: Reachable states at location L543 satisfy 290#true [2019-10-07 13:13:32,965 INFO L193 IcfgInterpreter]: Reachable states at location L526-4 satisfy 146#true [2019-10-07 13:13:33,369 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-10-07 13:13:33,536 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:13:33,536 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 9] total 24 [2019-10-07 13:13:33,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-07 13:13:33,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-07 13:13:33,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 13:13:33,543 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 24 states. [2019-10-07 13:13:33,794 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-10-07 13:13:33,945 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-10-07 13:13:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:13:34,745 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2019-10-07 13:13:34,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 13:13:34,745 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 19 [2019-10-07 13:13:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:13:34,746 INFO L225 Difference]: With dead ends: 42 [2019-10-07 13:13:34,747 INFO L226 Difference]: Without dead ends: 40 [2019-10-07 13:13:34,748 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2019-10-07 13:13:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-07 13:13:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2019-10-07 13:13:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-07 13:13:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-07 13:13:34,755 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2019-10-07 13:13:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:13:34,755 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-07 13:13:34,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-07 13:13:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-07 13:13:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-07 13:13:34,757 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:13:34,757 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:13:34,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:13:34,961 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:13:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:13:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash -489689482, now seen corresponding path program 2 times [2019-10-07 13:13:34,962 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:13:34,962 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:34,962 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:34,962 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:13:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:13:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:13:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:35,206 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:13:35,206 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:13:35,206 INFO L93 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 [2019-10-07 13:13:35,350 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-07 13:13:35,350 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:13:35,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-07 13:13:35,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:13:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:13:36,038 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:13:39,749 WARN L191 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2019-10-07 13:13:40,422 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-10-07 13:13:40,540 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 67