/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/dll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:31:17,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:31:17,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:31:17,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:31:17,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:31:17,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:31:17,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:31:17,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:31:17,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:31:17,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:31:17,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:31:17,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:31:17,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:31:17,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:31:17,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:31:17,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:31:17,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:31:17,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:31:17,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:31:17,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:31:17,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:31:17,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:31:17,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:31:17,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:31:17,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:31:17,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:31:17,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:31:17,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:31:17,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:31:17,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:31:17,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:31:17,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:31:17,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:31:17,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:31:17,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:31:17,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:31:17,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:31:17,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:31:17,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:31:17,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:31:17,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:31:17,775 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 00:31:17,797 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:31:17,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:31:17,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:31:17,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:31:17,799 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:31:17,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:31:17,799 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:31:17,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:31:17,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:31:17,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:31:17,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:31:17,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:31:17,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:31:17,801 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:31:17,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:31:17,801 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:31:17,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:31:17,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:31:17,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:31:17,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:31:17,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:31:17,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:31:17,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:31:17,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:31:17,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:31:17,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:31:17,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:31:17,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:31:17,804 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 00:31:18,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:31:18,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:31:18,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:31:18,159 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:31:18,160 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:31:18,160 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2019-11-07 00:31:18,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e8c9d7b/162cc7673e6f46c091164ce9dcd0e10e/FLAG25a87cfb1 [2019-11-07 00:31:18,768 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:31:18,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2019-11-07 00:31:18,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e8c9d7b/162cc7673e6f46c091164ce9dcd0e10e/FLAG25a87cfb1 [2019-11-07 00:31:19,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e8c9d7b/162cc7673e6f46c091164ce9dcd0e10e [2019-11-07 00:31:19,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:31:19,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:31:19,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:19,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:31:19,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:31:19,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19, skipping insertion in model container [2019-11-07 00:31:19,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,067 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:31:19,118 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:31:19,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:19,591 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:31:19,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:19,715 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:31:19,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19 WrapperNode [2019-11-07 00:31:19,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:19,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:31:19,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:31:19,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:31:19,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (1/1) ... [2019-11-07 00:31:19,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:31:19,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:31:19,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:31:19,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:31:19,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (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 00:31:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:31:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:31:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:31:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:31:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:31:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:31:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-11-07 00:31:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-11-07 00:31:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2019-11-07 00:31:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:31:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:31:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:31:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:31:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:31:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:31:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:31:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:31:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:31:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:31:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:31:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:31:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:31:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:31:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:31:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:31:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:31:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:31:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:31:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:31:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:31:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:31:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:31:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:31:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:31:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:31:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:31:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:31:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:31:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:31:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:31:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:31:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:31:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:31:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:31:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:31:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:31:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:31:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:31:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:31:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:31:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:31:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:31:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:31:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:31:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:31:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:31:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:31:19,871 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:31:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:31:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:31:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:31:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-11-07 00:31:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-11-07 00:31:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:31:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:31:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:31:20,487 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:31:20,745 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:31:20,745 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 00:31:20,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:20 BoogieIcfgContainer [2019-11-07 00:31:20,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:31:20,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:31:20,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:31:20,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:31:20,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:31:19" (1/3) ... [2019-11-07 00:31:20,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59430cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:20, skipping insertion in model container [2019-11-07 00:31:20,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:19" (2/3) ... [2019-11-07 00:31:20,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59430cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:20, skipping insertion in model container [2019-11-07 00:31:20,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:20" (3/3) ... [2019-11-07 00:31:20,756 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_unequal.i [2019-11-07 00:31:20,766 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:31:20,775 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:31:20,786 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:31:20,812 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:31:20,813 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:31:20,813 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:31:20,813 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:31:20,813 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:31:20,814 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:31:20,814 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:31:20,814 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:31:20,835 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-11-07 00:31:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-07 00:31:20,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:20,843 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] [2019-11-07 00:31:20,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:20,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:20,851 INFO L82 PathProgramCache]: Analyzing trace with hash 619880496, now seen corresponding path program 1 times [2019-11-07 00:31:20,859 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:20,859 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083637581] [2019-11-07 00:31:20,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:21,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083637581] [2019-11-07 00:31:21,091 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:21,091 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:31:21,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927037744] [2019-11-07 00:31:21,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:21,100 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:21,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:31:21,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:21,118 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-11-07 00:31:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:21,147 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2019-11-07 00:31:21,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:21,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-11-07 00:31:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:21,158 INFO L225 Difference]: With dead ends: 95 [2019-11-07 00:31:21,159 INFO L226 Difference]: Without dead ends: 40 [2019-11-07 00:31:21,162 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 00:31:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-07 00:31:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-07 00:31:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-07 00:31:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-11-07 00:31:21,208 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2019-11-07 00:31:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:21,210 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-11-07 00:31:21,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-11-07 00:31:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-07 00:31:21,213 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:21,213 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] [2019-11-07 00:31:21,213 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:21,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1639628125, now seen corresponding path program 1 times [2019-11-07 00:31:21,214 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:21,214 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25143352] [2019-11-07 00:31:21,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:21,416 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25143352] [2019-11-07 00:31:21,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:21,416 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:31:21,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754570415] [2019-11-07 00:31:21,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:31:21,418 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:31:21,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:31:21,419 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2019-11-07 00:31:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:21,483 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2019-11-07 00:31:21,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:31:21,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-07 00:31:21,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:21,485 INFO L225 Difference]: With dead ends: 70 [2019-11-07 00:31:21,485 INFO L226 Difference]: Without dead ends: 45 [2019-11-07 00:31:21,487 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 00:31:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-07 00:31:21,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2019-11-07 00:31:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-07 00:31:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-11-07 00:31:21,497 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2019-11-07 00:31:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:21,497 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-11-07 00:31:21,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:31:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-11-07 00:31:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-07 00:31:21,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:21,499 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:21,499 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1024501097, now seen corresponding path program 1 times [2019-11-07 00:31:21,500 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:21,500 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570691106] [2019-11-07 00:31:21,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:22,037 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570691106] [2019-11-07 00:31:22,037 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173665996] [2019-11-07 00:31:22,038 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 00:31:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:22,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-07 00:31:22,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:22,427 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-07 00:31:22,428 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:31:22,434 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:22,435 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:31:22,436 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-07 00:31:24,336 WARN L191 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-07 00:31:25,630 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-07 00:31:25,654 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:25,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:25,681 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:25,681 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:31 [2019-11-07 00:31:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:30,096 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:30,333 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:30,340 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:30,341 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:30,342 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:32 [2019-11-07 00:31:42,923 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:42,945 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:42,975 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:42,977 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2019-11-07 00:31:42,977 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:115, output treesize:95 [2019-11-07 00:31:58,302 WARN L191 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2019-11-07 00:31:58,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:31:58,317 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 00:31:58,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:58,552 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:178) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-07 00:31:58,557 INFO L168 Benchmark]: Toolchain (without parser) took 39504.82 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 102.9 MB in the beginning and 209.2 MB in the end (delta: -106.3 MB). Peak memory consumption was 120.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:58,558 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-07 00:31:58,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.26 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 166.0 MB in the end (delta: -63.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:58,561 INFO L168 Benchmark]: Boogie Preprocessor took 74.91 ms. Allocated memory is still 203.4 MB. Free memory was 166.0 MB in the beginning and 162.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:58,562 INFO L168 Benchmark]: RCFGBuilder took 955.48 ms. Allocated memory is still 203.4 MB. Free memory was 162.7 MB in the beginning and 110.0 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:58,563 INFO L168 Benchmark]: TraceAbstraction took 37807.02 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 109.3 MB in the beginning and 209.2 MB in the end (delta: -99.8 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:58,570 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.26 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.7 MB in the beginning and 166.0 MB in the end (delta: -63.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.91 ms. Allocated memory is still 203.4 MB. Free memory was 166.0 MB in the beginning and 162.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 955.48 ms. Allocated memory is still 203.4 MB. Free memory was 162.7 MB in the beginning and 110.0 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37807.02 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 109.3 MB in the beginning and 209.2 MB in the end (delta: -99.8 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...