/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:32:12,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:32:12,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:32:12,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:32:12,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:32:12,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:32:12,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:32:12,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:32:12,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:32:12,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:32:12,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:32:12,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:32:12,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:32:12,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:32:12,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:32:12,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:32:12,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:32:12,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:32:12,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:32:12,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:32:12,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:32:12,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:32:12,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:32:12,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:32:12,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:32:12,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:32:12,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:32:12,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:32:12,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:32:12,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:32:12,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:32:12,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:32:12,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:32:12,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:32:12,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:32:12,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:32:12,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:32:12,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:32:12,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:32:12,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:32:12,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:32:12,731 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 00:32:12,749 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:32:12,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:32:12,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:32:12,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:32:12,751 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:32:12,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:32:12,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:32:12,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:32:12,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:32:12,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:32:12,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:32:12,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:32:12,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:32:12,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:32:12,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:32:12,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:32:12,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:32:12,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:32:12,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:32:12,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:32:12,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:32:12,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:32:12,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:32:12,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:32:12,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:32:12,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:32:12,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:32:12,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:32:12,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:32:13,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:32:13,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:32:13,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:32:13,030 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:32:13,030 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:32:13,031 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-11-07 00:32:13,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09ac4393c/fe1470cb644b4fe6a7974d614c6827c5/FLAGebcc4a777 [2019-11-07 00:32:13,636 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:32:13,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-11-07 00:32:13,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09ac4393c/fe1470cb644b4fe6a7974d614c6827c5/FLAGebcc4a777 [2019-11-07 00:32:13,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09ac4393c/fe1470cb644b4fe6a7974d614c6827c5 [2019-11-07 00:32:13,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:32:13,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:32:13,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:32:13,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:32:13,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:32:13,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d88b7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13, skipping insertion in model container [2019-11-07 00:32:13,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,975 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:32:14,032 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:32:14,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:32:14,510 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:32:14,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:32:14,630 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:32:14,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14 WrapperNode [2019-11-07 00:32:14,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:32:14,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:32:14,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:32:14,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:32:14,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (1/1) ... [2019-11-07 00:32:14,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:32:14,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:32:14,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:32:14,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:32:14,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (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 00:32:14,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:32:14,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:32:14,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:32:14,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:32:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:32:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:32:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-07 00:32:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-07 00:32:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-11-07 00:32:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:32:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:32:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:32:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:32:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:32:14,774 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:32:14,775 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:32:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:32:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:32:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:32:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:32:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:32:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:32:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:32:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:32:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:32:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:32:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:32:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:32:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:32:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:32:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:32:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:32:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:32:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:32:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:32:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:32:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:32:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:32:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:32:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:32:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:32:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:32:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:32:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:32:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:32:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:32:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:32:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:32:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:32:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:32:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:32:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:32:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:32:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:32:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:32:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:32:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:32:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:32:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:32:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:32:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:32:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:32:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:32:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:32:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:32:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:32:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:32:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:32:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:32:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:32:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:32:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:32:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:32:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:32:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:32:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:32:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:32:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:32:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:32:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:32:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:32:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:32:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:32:14,796 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:32:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:32:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:32:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:32:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:32:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:32:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:32:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-07 00:32:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-07 00:32:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:32:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:32:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-11-07 00:32:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:32:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:32:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:32:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:32:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:32:14,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:32:15,148 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:32:15,399 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:32:15,399 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:32:15,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:15 BoogieIcfgContainer [2019-11-07 00:32:15,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:32:15,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:32:15,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:32:15,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:32:15,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:32:13" (1/3) ... [2019-11-07 00:32:15,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a52b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:15, skipping insertion in model container [2019-11-07 00:32:15,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:14" (2/3) ... [2019-11-07 00:32:15,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a52b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:15, skipping insertion in model container [2019-11-07 00:32:15,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:15" (3/3) ... [2019-11-07 00:32:15,419 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-11-07 00:32:15,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:32:15,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:32:15,453 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:32:15,484 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:32:15,484 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:32:15,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:32:15,485 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:32:15,485 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:32:15,485 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:32:15,485 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:32:15,485 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:32:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-07 00:32:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 00:32:15,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:15,508 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, 1, 1, 1, 1] [2019-11-07 00:32:15,511 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:15,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1667158038, now seen corresponding path program 1 times [2019-11-07 00:32:15,525 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:15,525 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810074021] [2019-11-07 00:32:15,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:15,737 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 00:32:15,738 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810074021] [2019-11-07 00:32:15,739 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:15,739 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:32:15,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054843641] [2019-11-07 00:32:15,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:32:15,747 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:15,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:32:15,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:32:15,765 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-11-07 00:32:15,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:15,796 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2019-11-07 00:32:15,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:32:15,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-07 00:32:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:15,805 INFO L225 Difference]: With dead ends: 88 [2019-11-07 00:32:15,806 INFO L226 Difference]: Without dead ends: 37 [2019-11-07 00:32:15,810 INFO L630 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 [2019-11-07 00:32:15,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-07 00:32:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-07 00:32:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-07 00:32:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-11-07 00:32:15,870 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-11-07 00:32:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:15,870 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-11-07 00:32:15,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:32:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-11-07 00:32:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 00:32:15,875 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:15,875 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, 1, 1, 1, 1] [2019-11-07 00:32:15,875 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash 937001954, now seen corresponding path program 1 times [2019-11-07 00:32:15,876 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:15,877 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257052321] [2019-11-07 00:32:15,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:16,042 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 00:32:16,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257052321] [2019-11-07 00:32:16,043 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:16,043 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:32:16,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740593044] [2019-11-07 00:32:16,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:32:16,046 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:32:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:32:16,047 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2019-11-07 00:32:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:16,112 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2019-11-07 00:32:16,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:32:16,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-07 00:32:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:16,115 INFO L225 Difference]: With dead ends: 66 [2019-11-07 00:32:16,115 INFO L226 Difference]: Without dead ends: 41 [2019-11-07 00:32:16,116 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 00:32:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-07 00:32:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-11-07 00:32:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-07 00:32:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-11-07 00:32:16,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-11-07 00:32:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:16,140 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-11-07 00:32:16,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:32:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-11-07 00:32:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-07 00:32:16,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:16,143 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:32:16,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:16,143 INFO L82 PathProgramCache]: Analyzing trace with hash -496897929, now seen corresponding path program 1 times [2019-11-07 00:32:16,144 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:16,144 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622679461] [2019-11-07 00:32:16,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:16,296 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 00:32:16,297 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622679461] [2019-11-07 00:32:16,297 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938400360] [2019-11-07 00:32:16,297 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 00:32:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:16,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 00:32:16,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:32:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:32:16,515 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:32:16,621 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 00:32:16,622 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1022828462] [2019-11-07 00:32:16,629 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 39 [2019-11-07 00:32:16,677 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:32:16,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:32:16,782 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:32:16,784 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-11-07 00:32:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:16,789 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:32:16,858 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-07 00:32:16,859 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:32:16,865 INFO L553 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-11-07 00:32:16,865 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:32:16,866 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:32:16,866 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6, 6] total 8 [2019-11-07 00:32:16,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112636365] [2019-11-07 00:32:16,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:32:16,869 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:16,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:32:16,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:32:16,871 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 2 states. [2019-11-07 00:32:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:16,886 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-07 00:32:16,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:32:16,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2019-11-07 00:32:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:16,887 INFO L225 Difference]: With dead ends: 38 [2019-11-07 00:32:16,887 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:32:16,889 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:32:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:32:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:32:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:32:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:32:16,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-11-07 00:32:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:16,890 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:32:16,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:32:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:32:16,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:32:17,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:32:17,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:32:17,159 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:32:17,159 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:32:17,159 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:32:17,159 INFO L446 ceAbstractionStarter]: At program point L561(line 561) the Hoare annotation is: true [2019-11-07 00:32:17,159 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2019-11-07 00:32:17,160 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2019-11-07 00:32:17,160 INFO L443 ceAbstractionStarter]: For program point sll_destroyEXIT(lines 581 587) no Hoare annotation was computed. [2019-11-07 00:32:17,160 INFO L446 ceAbstractionStarter]: At program point L582-2(lines 582 586) the Hoare annotation is: true [2019-11-07 00:32:17,160 INFO L446 ceAbstractionStarter]: At program point sll_destroyENTRY(lines 581 587) the Hoare annotation is: true [2019-11-07 00:32:17,160 INFO L443 ceAbstractionStarter]: For program point L582-3(lines 581 587) no Hoare annotation was computed. [2019-11-07 00:32:17,160 INFO L446 ceAbstractionStarter]: At program point sll_appendENTRY(lines 588 599) the Hoare annotation is: true [2019-11-07 00:32:17,160 INFO L443 ceAbstractionStarter]: For program point sll_appendEXIT(lines 588 599) no Hoare annotation was computed. [2019-11-07 00:32:17,160 INFO L443 ceAbstractionStarter]: For program point L594-1(lines 594 596) no Hoare annotation was computed. [2019-11-07 00:32:17,161 INFO L446 ceAbstractionStarter]: At program point L594-3(lines 594 596) the Hoare annotation is: true [2019-11-07 00:32:17,161 INFO L443 ceAbstractionStarter]: For program point L590(lines 590 598) no Hoare annotation was computed. [2019-11-07 00:32:17,161 INFO L443 ceAbstractionStarter]: For program point L594-4(lines 594 596) no Hoare annotation was computed. [2019-11-07 00:32:17,161 INFO L446 ceAbstractionStarter]: At program point L589(line 589) the Hoare annotation is: true [2019-11-07 00:32:17,161 INFO L443 ceAbstractionStarter]: For program point L589-1(line 589) no Hoare annotation was computed. [2019-11-07 00:32:17,161 INFO L443 ceAbstractionStarter]: For program point L590-2(lines 588 599) no Hoare annotation was computed. [2019-11-07 00:32:17,161 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:32:17,161 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:32:17,162 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:32:17,162 INFO L446 ceAbstractionStarter]: At program point L575(line 575) the Hoare annotation is: true [2019-11-07 00:32:17,162 INFO L443 ceAbstractionStarter]: For program point sll_createEXIT(lines 572 580) no Hoare annotation was computed. [2019-11-07 00:32:17,162 INFO L443 ceAbstractionStarter]: For program point L575-1(line 575) no Hoare annotation was computed. [2019-11-07 00:32:17,162 INFO L443 ceAbstractionStarter]: For program point L574-2(lines 574 578) no Hoare annotation was computed. [2019-11-07 00:32:17,162 INFO L446 ceAbstractionStarter]: At program point L574-3(lines 574 578) the Hoare annotation is: true [2019-11-07 00:32:17,162 INFO L443 ceAbstractionStarter]: For program point L574-4(lines 574 578) no Hoare annotation was computed. [2019-11-07 00:32:17,162 INFO L446 ceAbstractionStarter]: At program point sll_createENTRY(lines 572 580) the Hoare annotation is: true [2019-11-07 00:32:17,162 INFO L443 ceAbstractionStarter]: For program point sll_createFINAL(lines 572 580) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:32:17,163 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:32:17,163 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L443 ceAbstractionStarter]: For program point L609(lines 609 611) no Hoare annotation was computed. [2019-11-07 00:32:17,163 INFO L439 ceAbstractionStarter]: At program point L607-2(lines 607 614) the Hoare annotation is: false [2019-11-07 00:32:17,164 INFO L443 ceAbstractionStarter]: For program point L607-3(lines 600 622) no Hoare annotation was computed. [2019-11-07 00:32:17,164 INFO L439 ceAbstractionStarter]: At program point L603(line 603) the Hoare annotation is: false [2019-11-07 00:32:17,164 INFO L443 ceAbstractionStarter]: For program point L603-1(line 603) no Hoare annotation was computed. [2019-11-07 00:32:17,164 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 600 622) no Hoare annotation was computed. [2019-11-07 00:32:17,164 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 600 622) no Hoare annotation was computed. [2019-11-07 00:32:17,164 INFO L446 ceAbstractionStarter]: At program point L618(line 618) the Hoare annotation is: true [2019-11-07 00:32:17,165 INFO L443 ceAbstractionStarter]: For program point L618-1(line 618) no Hoare annotation was computed. [2019-11-07 00:32:17,165 INFO L439 ceAbstractionStarter]: At program point L616(lines 600 622) the Hoare annotation is: false [2019-11-07 00:32:17,165 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 600 622) the Hoare annotation is: true [2019-11-07 00:32:17,165 INFO L439 ceAbstractionStarter]: At program point L604(line 604) the Hoare annotation is: false [2019-11-07 00:32:17,165 INFO L443 ceAbstractionStarter]: For program point L604-1(line 604) no Hoare annotation was computed. [2019-11-07 00:32:17,166 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 620) no Hoare annotation was computed. [2019-11-07 00:32:17,166 INFO L446 ceAbstractionStarter]: At program point node_createENTRY(lines 563 571) the Hoare annotation is: true [2019-11-07 00:32:17,166 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 563 571) no Hoare annotation was computed. [2019-11-07 00:32:17,166 INFO L446 ceAbstractionStarter]: At program point L566(line 566) the Hoare annotation is: true [2019-11-07 00:32:17,166 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 563 571) no Hoare annotation was computed. [2019-11-07 00:32:17,166 INFO L443 ceAbstractionStarter]: For program point L565(lines 565 567) no Hoare annotation was computed. [2019-11-07 00:32:17,167 INFO L443 ceAbstractionStarter]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2019-11-07 00:32:17,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:32:17 BoogieIcfgContainer [2019-11-07 00:32:17,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:32:17,179 INFO L168 Benchmark]: Toolchain (without parser) took 3219.20 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 101.7 MB in the beginning and 108.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:17,180 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:32:17,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.23 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 167.9 MB in the end (delta: -66.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:17,182 INFO L168 Benchmark]: Boogie Preprocessor took 74.38 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 164.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:17,183 INFO L168 Benchmark]: RCFGBuilder took 695.74 ms. Allocated memory is still 203.9 MB. Free memory was 164.6 MB in the beginning and 116.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:17,184 INFO L168 Benchmark]: TraceAbstraction took 1772.83 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 116.0 MB in the beginning and 108.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:17,191 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.23 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.4 MB in the beginning and 167.9 MB in the end (delta: -66.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.38 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 164.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 695.74 ms. Allocated memory is still 203.9 MB. Free memory was 164.6 MB in the beginning and 116.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1772.83 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 116.0 MB in the beginning and 108.7 MB in the end (delta: 7.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 620]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 594]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 561]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 574]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 57 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 13 SDslu, 102 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 37 PreInvPairs, 38 NumberOfFragments, 21 HoareAnnotationTreeSize, 37 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 8841 SizeOfPredicates, 2 NumberOfNonLiveVariables, 227 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 15/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 161, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.972972972972973, AVG_VARS_REMOVED_DURING_WEAKENING: 1.5945945945945945, AVG_WEAKENED_CONJUNCTS: 0.16216216216216217, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...