/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 -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:17:43,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:17:43,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:17:43,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:17:43,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:17:43,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:17:43,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:17:43,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:17:43,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:17:43,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:17:43,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:17:43,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:17:43,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:17:43,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:17:43,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:17:43,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:17:43,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:17:43,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:17:43,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:17:43,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:17:43,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:17:43,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:17:43,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:17:43,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:17:43,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:17:43,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:17:43,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:17:43,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:17:43,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:17:43,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:17:43,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:17:43,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:17:43,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:17:43,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:17:43,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:17:43,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:17:43,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:17:43,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:17:43,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:17:43,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:17:43,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:17:43,880 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 [2019-11-06 21:17:43,900 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:17:43,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:17:43,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:17:43,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:17:43,903 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:17:43,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:17:43,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:17:43,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:17:43,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:17:43,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:17:43,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:17:43,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:17:43,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:17:43,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:17:43,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:17:43,906 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:17:43,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:17:43,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:17:43,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:17:43,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:17:43,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:17:43,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:17:43,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:17:43,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:17:43,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:17:43,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:17:43,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:17:43,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:17:43,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:17:44,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:17:44,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:17:44,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:17:44,214 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:17:44,215 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:17:44,216 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-11-06 21:17:44,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d616ace9/eb3b0f6fb33648589a77e8dcf1d8fa9b/FLAGcb89ea9ca [2019-11-06 21:17:44,865 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:17:44,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-11-06 21:17:44,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d616ace9/eb3b0f6fb33648589a77e8dcf1d8fa9b/FLAGcb89ea9ca [2019-11-06 21:17:45,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d616ace9/eb3b0f6fb33648589a77e8dcf1d8fa9b [2019-11-06 21:17:45,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:17:45,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:17:45,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:17:45,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:17:45,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:17:45,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e945bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45, skipping insertion in model container [2019-11-06 21:17:45,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,163 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:17:45,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:17:45,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:17:45,711 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:17:45,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:17:45,837 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:17:45,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45 WrapperNode [2019-11-06 21:17:45,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:17:45,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:17:45,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:17:45,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:17:45,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (1/1) ... [2019-11-06 21:17:45,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:17:45,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:17:45,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:17:45,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:17:45,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (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 [2019-11-06 21:17:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:17:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:17:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:17:45,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:17:45,987 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:17:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:17:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-06 21:17:45,988 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-06 21:17:45,989 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2019-11-06 21:17:45,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:17:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:17:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:17:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:17:45,990 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:17:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:17:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:17:45,993 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:17:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:17:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:17:45,994 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:17:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:17:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:17:45,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:17:45,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:17:45,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:17:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:17:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:17:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:17:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:17:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:17:45,998 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:17:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:17:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:17:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:17:45,999 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:17:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:17:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:17:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:17:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:17:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:17:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:17:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:17:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:17:46,003 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:17:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:17:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:17:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:17:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:17:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:17:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:17:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:17:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:17:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:17:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:17:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:17:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:17:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:17:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:17:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:17:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:17:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:17:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:17:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:17:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:17:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:17:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:17:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:17:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:17:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:17:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:17:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:17:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:17:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:17:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-06 21:17:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-06 21:17:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:17:46,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:17:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2019-11-06 21:17:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:17:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:17:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:17:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:17:46,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:17:46,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:17:46,416 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:17:46,690 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:17:46,690 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:17:46,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:17:46 BoogieIcfgContainer [2019-11-06 21:17:46,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:17:46,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:17:46,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:17:46,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:17:46,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:17:45" (1/3) ... [2019-11-06 21:17:46,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676abb62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:17:46, skipping insertion in model container [2019-11-06 21:17:46,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:17:45" (2/3) ... [2019-11-06 21:17:46,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676abb62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:17:46, skipping insertion in model container [2019-11-06 21:17:46,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:17:46" (3/3) ... [2019-11-06 21:17:46,700 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2019-11-06 21:17:46,710 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:17:46,719 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:17:46,731 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:17:46,756 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:17:46,756 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:17:46,756 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:17:46,756 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:17:46,756 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:17:46,757 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:17:46,757 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:17:46,757 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:17:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-11-06 21:17:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 21:17:46,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:46,781 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:46,783 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:46,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1121781111, now seen corresponding path program 1 times [2019-11-06 21:17:46,796 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:46,796 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005722365] [2019-11-06 21:17:46,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:17:47,231 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005722365] [2019-11-06 21:17:47,232 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:47,232 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:17:47,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084878754] [2019-11-06 21:17:47,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:17:47,238 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:17:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:17:47,257 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2019-11-06 21:17:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:47,492 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2019-11-06 21:17:47,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:17:47,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-06 21:17:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:47,504 INFO L225 Difference]: With dead ends: 107 [2019-11-06 21:17:47,505 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 21:17:47,509 INFO L630 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 [2019-11-06 21:17:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 21:17:47,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-06 21:17:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 21:17:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-11-06 21:17:47,566 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 37 [2019-11-06 21:17:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:47,568 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-11-06 21:17:47,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:17:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-11-06 21:17:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 21:17:47,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:47,573 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:17:47,574 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash 699165091, now seen corresponding path program 1 times [2019-11-06 21:17:47,575 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:47,575 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870880039] [2019-11-06 21:17:47,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:17:47,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870880039] [2019-11-06 21:17:47,795 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:17:47,796 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:17:47,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85978011] [2019-11-06 21:17:47,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:17:47,798 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:17:47,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:17:47,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:17:47,798 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 7 states. [2019-11-06 21:17:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:17:48,017 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2019-11-06 21:17:48,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:17:48,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-11-06 21:17:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:17:48,020 INFO L225 Difference]: With dead ends: 76 [2019-11-06 21:17:48,020 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 21:17:48,021 INFO L630 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 [2019-11-06 21:17:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 21:17:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-11-06 21:17:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 21:17:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2019-11-06 21:17:48,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2019-11-06 21:17:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:17:48,031 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2019-11-06 21:17:48,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:17:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2019-11-06 21:17:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 21:17:48,033 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:17:48,033 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, 1] [2019-11-06 21:17:48,034 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:17:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:17:48,034 INFO L82 PathProgramCache]: Analyzing trace with hash 983235931, now seen corresponding path program 1 times [2019-11-06 21:17:48,034 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:17:48,035 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898286863] [2019-11-06 21:17:48,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:17:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:17:48,565 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898286863] [2019-11-06 21:17:48,566 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064613731] [2019-11-06 21:17:48,566 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 [2019-11-06 21:17:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:17:48,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-06 21:17:48,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:17:48,976 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 [2019-11-06 21:17:48,978 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:17:48,988 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:48,988 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:17:48,989 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-06 21:17:50,152 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 20 [2019-11-06 21:17:51,107 WARN L191 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-06 21:17:51,132 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:17:51,141 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:17:51,142 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. [2019-11-06 21:17:51,143 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-11-06 21:18:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:18:00,361 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:18:00,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 27 [2019-11-06 21:18:00,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231102393] [2019-11-06 21:18:00,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-06 21:18:00,364 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:00,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-06 21:18:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=623, Unknown=4, NotChecked=0, Total=702 [2019-11-06 21:18:00,366 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 27 states. [2019-11-06 21:18:02,969 WARN L191 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-06 21:18:07,701 WARN L191 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-06 21:18:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:10,245 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2019-11-06 21:18:10,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-06 21:18:10,245 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2019-11-06 21:18:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:10,248 INFO L225 Difference]: With dead ends: 59 [2019-11-06 21:18:10,248 INFO L226 Difference]: Without dead ends: 46 [2019-11-06 21:18:10,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=131, Invalid=1125, Unknown=4, NotChecked=0, Total=1260 [2019-11-06 21:18:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-06 21:18:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-11-06 21:18:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-06 21:18:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-11-06 21:18:10,258 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 46 [2019-11-06 21:18:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:10,258 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-11-06 21:18:10,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-06 21:18:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-11-06 21:18:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 21:18:10,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:10,260 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, 1, 1, 1, 1] [2019-11-06 21:18:10,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:10,465 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2011910278, now seen corresponding path program 1 times [2019-11-06 21:18:10,465 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:10,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234858285] [2019-11-06 21:18:10,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:18:11,797 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234858285] [2019-11-06 21:18:11,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117844849] [2019-11-06 21:18:11,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:11,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 124 conjunts are in the unsatisfiable core [2019-11-06 21:18:11,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:12,002 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 [2019-11-06 21:18:12,002 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,004 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,004 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,005 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-06 21:18:12,186 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,187 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 [2019-11-06 21:18:12,188 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,195 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,196 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,196 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-11-06 21:18:12,240 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 [2019-11-06 21:18:12,240 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,270 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,271 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,271 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-06 21:18:12,340 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,341 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 [2019-11-06 21:18:12,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:18:12,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:12,346 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-06 21:18:12,380 INFO L567 ElimStorePlain]: treesize reduction 25, result has 51.9 percent of original size [2019-11-06 21:18:12,381 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. [2019-11-06 21:18:12,381 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2019-11-06 21:18:12,611 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-11-06 21:18:12,615 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 [2019-11-06 21:18:12,616 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,655 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:12,655 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 [2019-11-06 21:18:12,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:12,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:12,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:12,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:12,661 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:12,687 INFO L567 ElimStorePlain]: treesize reduction 20, result has 45.9 percent of original size [2019-11-06 21:18:12,689 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:12,689 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:7 [2019-11-06 21:18:13,583 INFO L392 ElimStorePlain]: Different costs {17=[|v_#memory_$Pointer$.offset_39|], 27=[|v_#memory_$Pointer$.base_42|]} [2019-11-06 21:18:13,591 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:13,641 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:13,649 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:13,690 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:13,691 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. [2019-11-06 21:18:13,691 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:215, output treesize:553 [2019-11-06 21:18:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:18:29,459 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:18:29,459 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 45 [2019-11-06 21:18:29,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594243022] [2019-11-06 21:18:29,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-11-06 21:18:29,461 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-11-06 21:18:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1851, Unknown=7, NotChecked=0, Total=1980 [2019-11-06 21:18:29,462 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 45 states.