/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_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:32:19,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:32:19,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:32:19,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:32:19,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:32:19,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:32:19,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:32:19,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:32:19,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:32:19,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:32:19,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:32:19,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:32:19,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:32:19,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:32:19,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:32:19,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:32:19,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:32:19,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:32:19,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:32:19,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:32:19,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:32:19,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:32:19,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:32:19,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:32:19,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:32:19,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:32:19,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:32:19,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:32:19,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:32:19,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:32:19,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:32:19,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:32:19,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:32:19,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:32:19,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:32:19,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:32:19,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:32:19,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:32:19,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:32:19,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:32:19,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:32:19,768 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 00:32:19,784 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:32:19,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:32:19,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:32:19,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:32:19,786 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:32:19,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:32:19,786 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:32:19,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:32:19,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:32:19,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:32:19,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:32:19,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:32:19,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:32:19,788 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:32:19,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:32:19,788 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:32:19,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:32:19,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:32:19,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:32:19,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:32:19,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:32:19,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:32:19,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:32:19,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:32:19,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:32:19,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:32:19,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:32:19,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:32:19,791 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 00:32:20,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:32:20,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:32:20,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:32:20,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:32:20,084 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:32:20,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-11-07 00:32:20,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a16ec7e4e/c5d3bc6cb80340afb5c2ec2f2ee1afe1/FLAG7f192cb4a [2019-11-07 00:32:20,720 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:32:20,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-11-07 00:32:20,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a16ec7e4e/c5d3bc6cb80340afb5c2ec2f2ee1afe1/FLAG7f192cb4a [2019-11-07 00:32:20,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a16ec7e4e/c5d3bc6cb80340afb5c2ec2f2ee1afe1 [2019-11-07 00:32:20,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:32:20,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:32:20,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:32:20,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:32:20,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:32:20,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:20" (1/1) ... [2019-11-07 00:32:20,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1888b39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:20, skipping insertion in model container [2019-11-07 00:32:20,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:20" (1/1) ... [2019-11-07 00:32:20,996 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:32:21,056 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:32:21,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:32:21,493 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:32:21,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:32:21,595 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:32:21,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21 WrapperNode [2019-11-07 00:32:21,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:32:21,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:32:21,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:32:21,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:32:21,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (1/1) ... [2019-11-07 00:32:21,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:32:21,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:32:21,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:32:21,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:32:21,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (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 00:32:21,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:32:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:32:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:32:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:32:21,712 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:32:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:32:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-07 00:32:21,714 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-07 00:32:21,716 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2019-11-07 00:32:21,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:32:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:32:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:32:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:32:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:32:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:32:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:32:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:32:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:32:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:32:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:32:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:32:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:32:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:32:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:32:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:32:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:32:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:32:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:32:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:32:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:32:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:32:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:32:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:32:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:32:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:32:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:32:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:32:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:32:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:32:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:32:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:32:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:32:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:32:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:32:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:32:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:32:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:32:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:32:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:32:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:32:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:32:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:32:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:32:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:32:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:32:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:32:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:32:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:32:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:32:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:32:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:32:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:32:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:32:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:32:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:32:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:32:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:32:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:32:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:32:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:32:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:32:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:32:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:32:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:32:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:32:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:32:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:32:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:32:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:32:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:32:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:32:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:32:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:32:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:32:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:32:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:32:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:32:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:32:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:32:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:32:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:32:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:32:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:32:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:32:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:32:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:32:22,135 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:32:22,341 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:32:22,342 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 00:32:22,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:22 BoogieIcfgContainer [2019-11-07 00:32:22,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:32:22,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:32:22,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:32:22,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:32:22,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:32:20" (1/3) ... [2019-11-07 00:32:22,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:22, skipping insertion in model container [2019-11-07 00:32:22,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:21" (2/3) ... [2019-11-07 00:32:22,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:22, skipping insertion in model container [2019-11-07 00:32:22,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:22" (3/3) ... [2019-11-07 00:32:22,354 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2019-11-07 00:32:22,362 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:32:22,368 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:32:22,377 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:32:22,399 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:32:22,399 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:32:22,399 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:32:22,399 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:32:22,399 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:32:22,400 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:32:22,400 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:32:22,400 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:32:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-11-07 00:32:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-07 00:32:22,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:22,422 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] [2019-11-07 00:32:22,424 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:22,430 INFO L82 PathProgramCache]: Analyzing trace with hash 266861268, now seen corresponding path program 1 times [2019-11-07 00:32:22,440 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:22,440 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683363356] [2019-11-07 00:32:22,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:22,643 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 00:32:22,644 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683363356] [2019-11-07 00:32:22,646 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:22,649 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:32:22,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557522953] [2019-11-07 00:32:22,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:32:22,662 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:22,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:32:22,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:32:22,685 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-11-07 00:32:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:22,730 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2019-11-07 00:32:22,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:32:22,733 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-11-07 00:32:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:22,749 INFO L225 Difference]: With dead ends: 82 [2019-11-07 00:32:22,749 INFO L226 Difference]: Without dead ends: 34 [2019-11-07 00:32:22,762 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 00:32:22,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-07 00:32:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-07 00:32:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 00:32:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-11-07 00:32:22,823 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2019-11-07 00:32:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:22,824 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-11-07 00:32:22,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:32:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-11-07 00:32:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-07 00:32:22,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:22,828 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] [2019-11-07 00:32:22,829 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:22,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1567298356, now seen corresponding path program 1 times [2019-11-07 00:32:22,830 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:22,830 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155411673] [2019-11-07 00:32:22,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:23,034 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 00:32:23,034 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155411673] [2019-11-07 00:32:23,034 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:23,035 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:32:23,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255981043] [2019-11-07 00:32:23,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:32:23,038 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:23,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:32:23,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:32:23,039 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2019-11-07 00:32:23,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:23,122 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2019-11-07 00:32:23,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:32:23,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-07 00:32:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:23,125 INFO L225 Difference]: With dead ends: 60 [2019-11-07 00:32:23,125 INFO L226 Difference]: Without dead ends: 38 [2019-11-07 00:32:23,126 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 00:32:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-07 00:32:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-11-07 00:32:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 00:32:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-11-07 00:32:23,148 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2019-11-07 00:32:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:23,148 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-11-07 00:32:23,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:32:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-11-07 00:32:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-07 00:32:23,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:23,150 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] [2019-11-07 00:32:23,150 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:23,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:23,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1679873603, now seen corresponding path program 1 times [2019-11-07 00:32:23,152 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:23,153 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263584307] [2019-11-07 00:32:23,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:23,287 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 00:32:23,287 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263584307] [2019-11-07 00:32:23,287 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808952482] [2019-11-07 00:32:23,288 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 00:32:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:23,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 00:32:23,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:32:23,539 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 00:32:23,543 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:32:23,680 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 00:32:23,680 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1924598062] [2019-11-07 00:32:23,687 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 37 [2019-11-07 00:32:23,728 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:32:23,728 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:32:23,823 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:32:23,825 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 28 variables. [2019-11-07 00:32:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:23,829 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:32:23,903 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-07 00:32:23,904 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:32:23,910 INFO L553 sIntCurrentIteration]: We unified 35 AI predicates to 35 [2019-11-07 00:32:23,911 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:32:23,912 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:32:23,912 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6, 6] total 8 [2019-11-07 00:32:23,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691259616] [2019-11-07 00:32:23,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:32:23,914 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:23,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:32:23,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:32:23,916 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 2 states. [2019-11-07 00:32:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:23,926 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-11-07 00:32:23,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:32:23,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-11-07 00:32:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:23,930 INFO L225 Difference]: With dead ends: 35 [2019-11-07 00:32:23,930 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:32:23,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 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 00:32:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:32:23,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:32:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:32:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:32:23,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-11-07 00:32:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:23,934 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:32:23,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:32:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:32:23,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:32:24,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:32:24,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:32:24,189 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:32:24,189 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:32:24,189 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:32:24,189 INFO L446 ceAbstractionStarter]: At program point L561(line 561) the Hoare annotation is: true [2019-11-07 00:32:24,190 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2019-11-07 00:32:24,190 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2019-11-07 00:32:24,190 INFO L443 ceAbstractionStarter]: For program point sll_destroyEXIT(lines 581 587) no Hoare annotation was computed. [2019-11-07 00:32:24,190 INFO L446 ceAbstractionStarter]: At program point L582-2(lines 582 586) the Hoare annotation is: true [2019-11-07 00:32:24,190 INFO L446 ceAbstractionStarter]: At program point sll_destroyENTRY(lines 581 587) the Hoare annotation is: true [2019-11-07 00:32:24,190 INFO L443 ceAbstractionStarter]: For program point L582-3(lines 581 587) no Hoare annotation was computed. [2019-11-07 00:32:24,190 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:32:24,191 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:32:24,191 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:32:24,191 INFO L446 ceAbstractionStarter]: At program point L575(line 575) the Hoare annotation is: true [2019-11-07 00:32:24,192 INFO L443 ceAbstractionStarter]: For program point sll_createEXIT(lines 572 580) no Hoare annotation was computed. [2019-11-07 00:32:24,192 INFO L443 ceAbstractionStarter]: For program point L575-1(line 575) no Hoare annotation was computed. [2019-11-07 00:32:24,192 INFO L443 ceAbstractionStarter]: For program point L574-2(lines 574 578) no Hoare annotation was computed. [2019-11-07 00:32:24,192 INFO L446 ceAbstractionStarter]: At program point L574-3(lines 574 578) the Hoare annotation is: true [2019-11-07 00:32:24,192 INFO L443 ceAbstractionStarter]: For program point L574-4(lines 574 578) no Hoare annotation was computed. [2019-11-07 00:32:24,192 INFO L446 ceAbstractionStarter]: At program point sll_createENTRY(lines 572 580) the Hoare annotation is: true [2019-11-07 00:32:24,192 INFO L443 ceAbstractionStarter]: For program point sll_createFINAL(lines 572 580) no Hoare annotation was computed. [2019-11-07 00:32:24,193 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:32:24,194 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:32:24,194 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:32:24,194 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:32:24,194 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:32:24,194 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:32:24,195 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:32:24,195 INFO L443 ceAbstractionStarter]: For program point L607(lines 607 609) no Hoare annotation was computed. [2019-11-07 00:32:24,195 INFO L439 ceAbstractionStarter]: At program point L605-2(lines 605 612) the Hoare annotation is: false [2019-11-07 00:32:24,195 INFO L443 ceAbstractionStarter]: For program point L605-3(lines 593 620) no Hoare annotation was computed. [2019-11-07 00:32:24,195 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 593 620) no Hoare annotation was computed. [2019-11-07 00:32:24,195 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 593 620) no Hoare annotation was computed. [2019-11-07 00:32:24,196 INFO L446 ceAbstractionStarter]: At program point L616(line 616) the Hoare annotation is: true [2019-11-07 00:32:24,196 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 618) no Hoare annotation was computed. [2019-11-07 00:32:24,196 INFO L443 ceAbstractionStarter]: For program point L616-1(line 616) no Hoare annotation was computed. [2019-11-07 00:32:24,196 INFO L439 ceAbstractionStarter]: At program point L614(lines 593 620) the Hoare annotation is: false [2019-11-07 00:32:24,196 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 593 620) the Hoare annotation is: true [2019-11-07 00:32:24,197 INFO L443 ceAbstractionStarter]: For program point L600(lines 600 602) no Hoare annotation was computed. [2019-11-07 00:32:24,197 INFO L439 ceAbstractionStarter]: At program point L598(line 598) the Hoare annotation is: false [2019-11-07 00:32:24,197 INFO L443 ceAbstractionStarter]: For program point L598-1(line 598) no Hoare annotation was computed. [2019-11-07 00:32:24,197 INFO L439 ceAbstractionStarter]: At program point L596(line 596) the Hoare annotation is: false [2019-11-07 00:32:24,197 INFO L443 ceAbstractionStarter]: For program point L596-1(line 596) no Hoare annotation was computed. [2019-11-07 00:32:24,197 INFO L446 ceAbstractionStarter]: At program point node_createENTRY(lines 563 571) the Hoare annotation is: true [2019-11-07 00:32:24,198 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 563 571) no Hoare annotation was computed. [2019-11-07 00:32:24,198 INFO L446 ceAbstractionStarter]: At program point L566(line 566) the Hoare annotation is: true [2019-11-07 00:32:24,198 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 563 571) no Hoare annotation was computed. [2019-11-07 00:32:24,198 INFO L443 ceAbstractionStarter]: For program point L565(lines 565 567) no Hoare annotation was computed. [2019-11-07 00:32:24,198 INFO L443 ceAbstractionStarter]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2019-11-07 00:32:24,198 INFO L446 ceAbstractionStarter]: At program point L589(line 589) the Hoare annotation is: true [2019-11-07 00:32:24,198 INFO L443 ceAbstractionStarter]: For program point L589-1(line 589) no Hoare annotation was computed. [2019-11-07 00:32:24,199 INFO L443 ceAbstractionStarter]: For program point sll_prependFINAL(lines 588 592) no Hoare annotation was computed. [2019-11-07 00:32:24,199 INFO L446 ceAbstractionStarter]: At program point sll_prependENTRY(lines 588 592) the Hoare annotation is: true [2019-11-07 00:32:24,199 INFO L443 ceAbstractionStarter]: For program point sll_prependEXIT(lines 588 592) no Hoare annotation was computed. [2019-11-07 00:32:24,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:32:24 BoogieIcfgContainer [2019-11-07 00:32:24,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:32:24,216 INFO L168 Benchmark]: Toolchain (without parser) took 3234.04 ms. Allocated memory was 144.7 MB in the beginning and 236.5 MB in the end (delta: 91.8 MB). Free memory was 101.1 MB in the beginning and 112.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:24,219 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 00:32:24,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.68 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.9 MB in the beginning and 169.2 MB in the end (delta: -68.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:24,224 INFO L168 Benchmark]: Boogie Preprocessor took 62.67 ms. Allocated memory is still 204.5 MB. Free memory was 169.2 MB in the beginning and 166.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:24,227 INFO L168 Benchmark]: RCFGBuilder took 685.55 ms. Allocated memory is still 204.5 MB. Free memory was 166.2 MB in the beginning and 119.3 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:24,233 INFO L168 Benchmark]: TraceAbstraction took 1865.01 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 119.3 MB in the beginning and 112.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:24,240 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.68 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 100.9 MB in the beginning and 169.2 MB in the end (delta: -68.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.67 ms. Allocated memory is still 204.5 MB. Free memory was 169.2 MB in the beginning and 166.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 685.55 ms. Allocated memory is still 204.5 MB. Free memory was 166.2 MB in the beginning and 119.3 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1865.01 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 119.3 MB in the beginning and 112.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 618]: 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: 561]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 574]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 15 SDslu, 88 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 20 LocationsWithAnnotation, 34 PreInvPairs, 35 NumberOfFragments, 20 HoareAnnotationTreeSize, 34 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 8017 SizeOfPredicates, 2 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 15/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 143, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9714285714285714, AVG_VARS_REMOVED_DURING_WEAKENING: 1.5714285714285714, AVG_WEAKENED_CONJUNCTS: 0.17142857142857143, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...