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 -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:12:35,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:12:35,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:12:35,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:12:35,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:12:35,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:12:35,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:12:35,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:12:35,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:12:35,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:12:35,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:12:35,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:12:35,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:12:35,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:12:35,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:12:35,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:12:35,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:12:35,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:12:35,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:12:35,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:12:35,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:12:35,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:12:35,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:12:35,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:12:35,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:12:35,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:12:35,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:12:35,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:12:35,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:12:35,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:12:35,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:12:35,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:12:35,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:12:35,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:12:35,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:12:35,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:12:35,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:12:35,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:12:35,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:12:35,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:12:35,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:12:35,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:12:35,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:12:35,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:12:35,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:12:35,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:12:35,807 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:12:35,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:12:35,807 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:12:35,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:12:35,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:12:35,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:12:35,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:12:35,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:12:35,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:12:35,809 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:12:35,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:12:35,809 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:12:35,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:12:35,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:12:35,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:12:35,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:12:35,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:12:35,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:35,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:12:35,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:12:35,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:12:35,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:12:35,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:12:35,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:12:35,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:12:36,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:12:36,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:12:36,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:12:36,117 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:12:36,118 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:12:36,119 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-10-14 23:12:36,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee9fe6a35/5b72c63143144eb1b8d57799257e13f3/FLAG4548c6449 [2019-10-14 23:12:36,809 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:12:36,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-10-14 23:12:36,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee9fe6a35/5b72c63143144eb1b8d57799257e13f3/FLAG4548c6449 [2019-10-14 23:12:37,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee9fe6a35/5b72c63143144eb1b8d57799257e13f3 [2019-10-14 23:12:37,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:12:37,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:12:37,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:37,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:12:37,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:12:37,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7e0ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37, skipping insertion in model container [2019-10-14 23:12:37,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,064 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:12:37,108 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:12:37,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:37,597 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:12:37,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:37,723 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:12:37,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37 WrapperNode [2019-10-14 23:12:37,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:37,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:12:37,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:12:37,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:12:37,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... [2019-10-14 23:12:37,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:12:37,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:12:37,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:12:37,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:12:37,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:37,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:12:37,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:12:37,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:12:37,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:12:37,851 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:12:37,851 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:12:37,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-14 23:12:37,852 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-14 23:12:37,852 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2019-10-14 23:12:37,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:12:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:12:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:12:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:12:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:12:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:12:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:12:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:12:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:12:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:12:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:12:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:12:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:12:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:12:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:12:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:12:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:12:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:12:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:12:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:12:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:12:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:12:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:12:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:12:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:12:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:12:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:12:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:12:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:12:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:12:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:12:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:12:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:12:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:12:37,860 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:12:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:12:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:12:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:12:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:12:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:12:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:12:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:12:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:12:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:12:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:12:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:12:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:12:37,863 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:12:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:12:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:12:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:12:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:12:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:12:37,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:12:37,865 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:12:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:12:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:12:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:12:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:12:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:12:37,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:12:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:12:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:12:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:12:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:12:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:12:37,867 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:12:37,868 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:12:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:12:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:12:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:12:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:12:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:12:37,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:12:37,870 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2019-10-14 23:12:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:12:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:12:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:12:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:12:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:12:37,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:12:38,267 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:12:38,496 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:12:38,497 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:12:38,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:38 BoogieIcfgContainer [2019-10-14 23:12:38,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:12:38,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:12:38,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:12:38,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:12:38,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:12:37" (1/3) ... [2019-10-14 23:12:38,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b74f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:38, skipping insertion in model container [2019-10-14 23:12:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:37" (2/3) ... [2019-10-14 23:12:38,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b74f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:38, skipping insertion in model container [2019-10-14 23:12:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:38" (3/3) ... [2019-10-14 23:12:38,507 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2019-10-14 23:12:38,516 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:12:38,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:12:38,534 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:12:38,557 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:12:38,557 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:12:38,557 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:12:38,558 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:12:38,558 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:12:38,558 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:12:38,558 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:12:38,558 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:12:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-10-14 23:12:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-14 23:12:38,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:38,583 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:38,585 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1121781111, now seen corresponding path program 1 times [2019-10-14 23:12:38,599 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:38,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353248512] [2019-10-14 23:12:38,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:38,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:38,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:39,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353248512] [2019-10-14 23:12:39,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:39,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:12:39,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630205300] [2019-10-14 23:12:39,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:12:39,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:39,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:12:39,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:12:39,028 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2019-10-14 23:12:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:39,292 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2019-10-14 23:12:39,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:12:39,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-14 23:12:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:39,304 INFO L225 Difference]: With dead ends: 107 [2019-10-14 23:12:39,305 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:12:39,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:12:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:12:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-14 23:12:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:12:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-10-14 23:12:39,358 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 37 [2019-10-14 23:12:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:39,360 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-10-14 23:12:39,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:12:39,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-10-14 23:12:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:12:39,365 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:39,366 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:39,366 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:39,367 INFO L82 PathProgramCache]: Analyzing trace with hash 699165091, now seen corresponding path program 1 times [2019-10-14 23:12:39,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:39,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024234119] [2019-10-14 23:12:39,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:39,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:39,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:39,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024234119] [2019-10-14 23:12:39,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:39,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:39,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880365245] [2019-10-14 23:12:39,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:39,649 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:39,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:39,650 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 7 states. [2019-10-14 23:12:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:39,914 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2019-10-14 23:12:39,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:39,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-14 23:12:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:39,917 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:12:39,917 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 23:12:39,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 23:12:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-10-14 23:12:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:12:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2019-10-14 23:12:39,930 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2019-10-14 23:12:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:39,930 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2019-10-14 23:12:39,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2019-10-14 23:12:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:12:39,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:39,933 INFO L380 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, 1] [2019-10-14 23:12:39,933 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash 983235931, now seen corresponding path program 1 times [2019-10-14 23:12:39,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:39,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907858114] [2019-10-14 23:12:39,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:39,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:39,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:12:40,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907858114] [2019-10-14 23:12:40,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356180121] [2019-10-14 23:12:40,593 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 [2019-10-14 23:12:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:40,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-14 23:12:40,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:41,080 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 [2019-10-14 23:12:41,090 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:41,107 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:41,108 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:12:41,109 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:12:42,343 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 20 [2019-10-14 23:12:43,281 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-10-14 23:12:43,294 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:12:43,315 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:43,317 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. [2019-10-14 23:12:43,317 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-10-14 23:12:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:12:48,601 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:48,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2019-10-14 23:12:48,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564689600] [2019-10-14 23:12:48,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-14 23:12:48,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:48,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-14 23:12:48,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=576, Unknown=2, NotChecked=0, Total=650 [2019-10-14 23:12:48,603 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 26 states. [2019-10-14 23:12:50,457 WARN L191 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 29 [2019-10-14 23:12:55,648 WARN L191 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-10-14 23:12:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:58,122 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2019-10-14 23:12:58,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 23:12:58,122 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2019-10-14 23:12:58,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:58,124 INFO L225 Difference]: With dead ends: 59 [2019-10-14 23:12:58,125 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 23:12:58,126 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=128, Invalid=1060, Unknown=2, NotChecked=0, Total=1190 [2019-10-14 23:12:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 23:12:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-10-14 23:12:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:12:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-14 23:12:58,134 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 46 [2019-10-14 23:12:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:58,135 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-14 23:12:58,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-14 23:12:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-14 23:12:58,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:12:58,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:58,137 INFO L380 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, 1, 1, 1, 1] [2019-10-14 23:12:58,338 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:12:58,343 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:58,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:58,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2011910278, now seen corresponding path program 1 times [2019-10-14 23:12:58,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:58,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759998077] [2019-10-14 23:12:58,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,331 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-10-14 23:12:59,496 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2019-10-14 23:12:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:12:59,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759998077] [2019-10-14 23:12:59,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680437875] [2019-10-14 23:12:59,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:12:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 124 conjunts are in the unsatisfiable core [2019-10-14 23:12:59,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:59,997 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-14 23:12:59,998 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,000 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,000 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,000 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-14 23:13:00,198 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,198 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-14 23:13:00,199 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,213 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,213 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,214 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-10-14 23:13:00,272 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-14 23:13:00,272 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,279 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,279 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-10-14 23:13:00,358 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,358 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-10-14 23:13:00,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:00,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,363 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:13:00,386 INFO L567 ElimStorePlain]: treesize reduction 25, result has 51.9 percent of original size [2019-10-14 23:13:00,387 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:00,388 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2019-10-14 23:13:00,616 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-10-14 23:13:00,621 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 7 treesize of output 3 [2019-10-14 23:13:00,621 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,636 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,661 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 49 [2019-10-14 23:13:00,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,666 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:00,687 INFO L567 ElimStorePlain]: treesize reduction 20, result has 45.9 percent of original size [2019-10-14 23:13:00,688 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:00,689 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:7 [2019-10-14 23:13:01,657 INFO L392 ElimStorePlain]: Different costs {17=[|v_#memory_$Pointer$.offset_39|], 27=[|v_#memory_$Pointer$.base_42|]} [2019-10-14 23:13:01,661 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:01,715 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:01,724 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:01,761 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:01,763 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:01,763 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:215, output treesize:553 [2019-10-14 23:13:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:13:14,192 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:13:14,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 45 [2019-10-14 23:13:14,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646146053] [2019-10-14 23:13:14,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-10-14 23:13:14,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:13:14,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-10-14 23:13:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1852, Unknown=6, NotChecked=0, Total=1980 [2019-10-14 23:13:14,195 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 45 states.