/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/sll2c_update_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:57:19,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:57:19,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:57:19,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:57:19,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:57:19,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:57:19,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:57:19,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:57:19,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:57:19,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:57:19,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:57:19,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:57:19,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:57:19,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:57:19,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:57:19,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:57:19,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:57:19,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:57:19,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:57:19,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:57:19,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:57:19,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:57:19,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:57:19,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:57:19,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:57:19,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:57:19,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:57:19,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:57:19,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:57:19,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:57:19,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:57:19,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:57:19,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:57:19,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:57:19,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:57:19,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:57:19,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:57:19,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:57:19,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:57:19,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:57:19,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:57:19,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 03:57:19,675 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:57:19,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:57:19,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:57:19,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:57:19,677 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:57:19,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:57:19,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:57:19,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:57:19,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:57:19,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:57:19,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:57:19,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:57:19,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:57:19,679 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:57:19,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:57:19,679 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:57:19,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:57:19,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:57:19,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:57:19,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:57:19,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:57:19,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:57:19,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:57:19,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:57:19,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:57:19,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:57:19,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:57:19,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:57:19,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 03:57:19,959 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:57:19,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:57:19,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:57:19,988 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:57:19,989 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:57:19,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_update_all.i [2019-11-07 03:57:20,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f605dc35/4706650c745d435eb3a21e8e51070189/FLAG19c1d6dc7 [2019-11-07 03:57:20,644 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:57:20,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_update_all.i [2019-11-07 03:57:20,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f605dc35/4706650c745d435eb3a21e8e51070189/FLAG19c1d6dc7 [2019-11-07 03:57:20,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f605dc35/4706650c745d435eb3a21e8e51070189 [2019-11-07 03:57:21,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:57:21,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:57:21,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:57:21,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:57:21,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:57:21,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:20" (1/1) ... [2019-11-07 03:57:21,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c34bc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21, skipping insertion in model container [2019-11-07 03:57:21,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:20" (1/1) ... [2019-11-07 03:57:21,043 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:57:21,150 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:57:21,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:57:21,636 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:57:21,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:57:21,762 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:57:21,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21 WrapperNode [2019-11-07 03:57:21,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:57:21,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:57:21,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:57:21,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:57:21,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... [2019-11-07 03:57:21,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:57:21,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:57:21,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:57:21,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:57:21,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:57:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:57:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:57:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 03:57:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 03:57:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 03:57:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 03:57:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-07 03:57:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-07 03:57:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_get_data_at [2019-11-07 03:57:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_update_at [2019-11-07 03:57:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:57:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:57:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 03:57:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 03:57:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 03:57:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 03:57:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 03:57:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 03:57:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 03:57:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 03:57:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 03:57:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 03:57:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 03:57:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 03:57:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 03:57:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 03:57:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 03:57:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 03:57:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 03:57:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 03:57:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 03:57:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 03:57:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 03:57:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 03:57:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 03:57:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 03:57:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 03:57:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 03:57:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 03:57:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 03:57:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 03:57:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 03:57:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 03:57:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 03:57:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 03:57:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 03:57:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 03:57:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 03:57:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 03:57:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 03:57:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 03:57:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 03:57:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 03:57:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 03:57:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 03:57:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 03:57:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 03:57:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 03:57:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:57:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:57:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 03:57:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:57:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 03:57:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 03:57:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 03:57:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 03:57:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 03:57:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 03:57:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 03:57:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 03:57:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 03:57:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 03:57:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 03:57:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 03:57:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 03:57:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 03:57:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 03:57:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 03:57:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 03:57:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 03:57:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 03:57:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 03:57:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 03:57:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 03:57:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 03:57:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 03:57:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 03:57:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 03:57:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 03:57:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 03:57:21,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 03:57:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 03:57:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 03:57:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 03:57:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 03:57:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 03:57:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 03:57:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 03:57:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 03:57:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 03:57:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 03:57:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:57:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_get_data_at [2019-11-07 03:57:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:57:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_update_at [2019-11-07 03:57:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:57:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:57:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:57:22,243 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 03:57:22,589 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:57:22,589 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-07 03:57:22,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:22 BoogieIcfgContainer [2019-11-07 03:57:22,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:57:22,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:57:22,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:57:22,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:57:22,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:57:20" (1/3) ... [2019-11-07 03:57:22,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a9f5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:22, skipping insertion in model container [2019-11-07 03:57:22,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:21" (2/3) ... [2019-11-07 03:57:22,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a9f5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:22, skipping insertion in model container [2019-11-07 03:57:22,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:22" (3/3) ... [2019-11-07 03:57:22,613 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_update_all.i [2019-11-07 03:57:22,625 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:57:22,636 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:57:22,649 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:57:22,688 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:57:22,689 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:57:22,689 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:57:22,689 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:57:22,689 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:57:22,690 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:57:22,690 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:57:22,690 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:57:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-11-07 03:57:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 03:57:22,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:22,716 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:22,718 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:22,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1316105522, now seen corresponding path program 1 times [2019-11-07 03:57:22,736 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:22,736 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279824333] [2019-11-07 03:57:22,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:57:23,078 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279824333] [2019-11-07 03:57:23,078 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:57:23,079 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 03:57:23,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111084022] [2019-11-07 03:57:23,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 03:57:23,085 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:57:23,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 03:57:23,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 03:57:23,102 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 5 states. [2019-11-07 03:57:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:57:23,207 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2019-11-07 03:57:23,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:57:23,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-07 03:57:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:57:23,219 INFO L225 Difference]: With dead ends: 78 [2019-11-07 03:57:23,219 INFO L226 Difference]: Without dead ends: 36 [2019-11-07 03:57:23,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 03:57:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-07 03:57:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2019-11-07 03:57:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 03:57:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-11-07 03:57:23,272 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 25 [2019-11-07 03:57:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:57:23,273 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-11-07 03:57:23,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 03:57:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-11-07 03:57:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 03:57:23,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:23,276 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:23,276 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:23,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:23,277 INFO L82 PathProgramCache]: Analyzing trace with hash -168761337, now seen corresponding path program 1 times [2019-11-07 03:57:23,277 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:23,277 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103646948] [2019-11-07 03:57:23,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:23,406 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103646948] [2019-11-07 03:57:23,407 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:57:23,407 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 03:57:23,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76898848] [2019-11-07 03:57:23,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 03:57:23,412 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:57:23,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 03:57:23,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:57:23,413 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 4 states. [2019-11-07 03:57:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:57:23,477 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-11-07 03:57:23,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 03:57:23,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-07 03:57:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:57:23,481 INFO L225 Difference]: With dead ends: 52 [2019-11-07 03:57:23,481 INFO L226 Difference]: Without dead ends: 43 [2019-11-07 03:57:23,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 03:57:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-07 03:57:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2019-11-07 03:57:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 03:57:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-11-07 03:57:23,502 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 32 [2019-11-07 03:57:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:57:23,503 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-11-07 03:57:23,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 03:57:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-11-07 03:57:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 03:57:23,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:23,506 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:23,506 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:23,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:23,506 INFO L82 PathProgramCache]: Analyzing trace with hash 575567927, now seen corresponding path program 1 times [2019-11-07 03:57:23,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:23,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57824240] [2019-11-07 03:57:23,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:23,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57824240] [2019-11-07 03:57:23,658 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912031618] [2019-11-07 03:57:23,658 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 [2019-11-07 03:57:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:23,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 03:57:23,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:57:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:23,896 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:57:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:23,959 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602100471] [2019-11-07 03:57:23,986 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2019-11-07 03:57:23,986 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:57:23,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:57:23,997 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:57:23,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:57:24,122 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 03:57:24,226 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:57:26,063 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:57:26,189 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:57:26,301 INFO L197 IcfgInterpreter]: Interpreting procedure sll_circular_update_at with input of size 73 for LOIs [2019-11-07 03:57:26,317 INFO L197 IcfgInterpreter]: Interpreting procedure sll_circular_create with input of size 33 for LOIs [2019-11-07 03:57:27,770 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 55 for LOIs [2019-11-07 03:57:27,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:57:27,839 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:57:28,355 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-11-07 03:57:30,899 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-11-07 03:57:31,331 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-11-07 03:57:31,791 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2019-11-07 03:57:39,111 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 03:57:39,111 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [5, 5, 5] total 30 [2019-11-07 03:57:39,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838219768] [2019-11-07 03:57:39,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 03:57:39,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:57:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 03:57:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=764, Unknown=6, NotChecked=0, Total=870 [2019-11-07 03:57:39,117 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 24 states. [2019-11-07 03:57:46,406 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-11-07 03:57:46,618 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-11-07 03:57:47,143 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-11-07 03:57:47,765 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2019-11-07 03:57:48,630 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2019-11-07 03:57:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:57:55,479 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2019-11-07 03:57:55,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 03:57:55,480 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 38 [2019-11-07 03:57:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:57:55,483 INFO L225 Difference]: With dead ends: 51 [2019-11-07 03:57:55,483 INFO L226 Difference]: Without dead ends: 42 [2019-11-07 03:57:55,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=247, Invalid=2193, Unknown=10, NotChecked=0, Total=2450 [2019-11-07 03:57:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-07 03:57:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-11-07 03:57:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-07 03:57:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-11-07 03:57:55,496 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 38 [2019-11-07 03:57:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:57:55,497 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-11-07 03:57:55,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-07 03:57:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-11-07 03:57:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-07 03:57:55,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:55,498 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:55,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:57:55,700 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:55,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:55,701 INFO L82 PathProgramCache]: Analyzing trace with hash 812863416, now seen corresponding path program 1 times [2019-11-07 03:57:55,701 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:55,701 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958160222] [2019-11-07 03:57:55,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:55,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958160222] [2019-11-07 03:57:55,830 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641381573] [2019-11-07 03:57:55,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:57:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:55,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 03:57:55,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:57:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:55,980 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:57:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:57:56,055 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 03:57:56,055 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-11-07 03:57:56,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657264794] [2019-11-07 03:57:56,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 03:57:56,058 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:57:56,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 03:57:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-07 03:57:56,059 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2019-11-07 03:57:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:57:56,116 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2019-11-07 03:57:56,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 03:57:56,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-11-07 03:57:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:57:56,118 INFO L225 Difference]: With dead ends: 66 [2019-11-07 03:57:56,119 INFO L226 Difference]: Without dead ends: 51 [2019-11-07 03:57:56,120 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-07 03:57:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-07 03:57:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2019-11-07 03:57:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-07 03:57:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-11-07 03:57:56,144 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 39 [2019-11-07 03:57:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:57:56,145 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-11-07 03:57:56,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 03:57:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-11-07 03:57:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-07 03:57:56,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:56,148 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:56,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:57:56,355 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:56,356 INFO L82 PathProgramCache]: Analyzing trace with hash -185849464, now seen corresponding path program 2 times [2019-11-07 03:57:56,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:56,356 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549882309] [2019-11-07 03:57:56,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:57:57,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549882309] [2019-11-07 03:57:57,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533729487] [2019-11-07 03:57:57,470 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:57:57,637 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 03:57:57,637 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 03:57:57,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 103 conjunts are in the unsatisfiable core [2019-11-07 03:57:57,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:57:59,572 WARN L860 $PredicateComparison]: unable to prove that (exists ((sll_circular_update_at_~head.offset Int) (sll_circular_update_at_~data Int)) (= (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_sll_circular_update_at_#in~head.base|) |c_sll_circular_update_at_#in~head.offset|))) (store |c_old(#memory_int)| .cse0 (store (select |c_old(#memory_int)| .cse0) (+ sll_circular_update_at_~head.offset 4) sll_circular_update_at_~data))) |c_#memory_int|)) is different from true [2019-11-07 03:57:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-11-07 03:57:59,852 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:58:00,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9