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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:07:12,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:12,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:12,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:12,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:12,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:12,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:12,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:12,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:12,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:12,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:12,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:12,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:12,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:12,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:12,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:12,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:12,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:12,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:12,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:12,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:12,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:12,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:12,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:12,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:12,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:12,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:12,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:12,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:12,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:12,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:12,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:12,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:12,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:12,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:12,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:12,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:12,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:12,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:12,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:12,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:12,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:07:12,157 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:12,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:12,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:12,158 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:12,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:12,159 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:12,159 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:12,159 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:12,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:12,160 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:12,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:12,160 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:12,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:12,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:12,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:12,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:12,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:12,162 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:12,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:12,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:12,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:12,163 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:12,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:12,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:12,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:12,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:12,164 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:12,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:12,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:12,164 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:12,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:12,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:12,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:12,212 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:12,213 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:12,214 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2019-09-16 17:07:12,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73d5078d/88c3e530ecee4bedb7b847b64d581620/FLAG98479405d [2019-09-16 17:07:12,813 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:12,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_remove_all_reverse.i [2019-09-16 17:07:12,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73d5078d/88c3e530ecee4bedb7b847b64d581620/FLAG98479405d [2019-09-16 17:07:13,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e73d5078d/88c3e530ecee4bedb7b847b64d581620 [2019-09-16 17:07:13,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:13,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:13,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:13,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:13,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:13,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545088a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13, skipping insertion in model container [2019-09-16 17:07:13,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,135 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:13,184 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:13,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:13,674 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:13,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:13,773 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:13,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13 WrapperNode [2019-09-16 17:07:13,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:13,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:13,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:13,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:13,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (1/1) ... [2019-09-16 17:07:13,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:13,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:13,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:13,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:13,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (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 [2019-09-16 17:07:13,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-16 17:07:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-16 17:07:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-16 17:07:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-16 17:07:13,900 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-09-16 17:07:13,900 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_remove_last [2019-09-16 17:07:13,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:13,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:13,901 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-16 17:07:13,901 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-16 17:07:13,901 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 17:07:13,901 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 17:07:13,901 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 17:07:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 17:07:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 17:07:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 17:07:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 17:07:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 17:07:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 17:07:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 17:07:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 17:07:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 17:07:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 17:07:13,905 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 17:07:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 17:07:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 17:07:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 17:07:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 17:07:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 17:07:13,906 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 17:07:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 17:07:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 17:07:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 17:07:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 17:07:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 17:07:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 17:07:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 17:07:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 17:07:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 17:07:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 17:07:13,908 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 17:07:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 17:07:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 17:07:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 17:07:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 17:07:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 17:07:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 17:07:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 17:07:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 17:07:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 17:07:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 17:07:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 17:07:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 17:07:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 17:07:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 17:07:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:07:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 17:07:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 17:07:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 17:07:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 17:07:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 17:07:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 17:07:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 17:07:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 17:07:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 17:07:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 17:07:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 17:07:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 17:07:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 17:07:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 17:07:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 17:07:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 17:07:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 17:07:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 17:07:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 17:07:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 17:07:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 17:07:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 17:07:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 17:07:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-09-16 17:07:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_remove_last [2019-09-16 17:07:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:07:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:07:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:13,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:14,426 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-16 17:07:14,522 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:14,522 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-16 17:07:14,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:14 BoogieIcfgContainer [2019-09-16 17:07:14,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:14,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:14,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:14,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:14,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:13" (1/3) ... [2019-09-16 17:07:14,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d18a6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:14, skipping insertion in model container [2019-09-16 17:07:14,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:13" (2/3) ... [2019-09-16 17:07:14,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d18a6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:14, skipping insertion in model container [2019-09-16 17:07:14,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:14" (3/3) ... [2019-09-16 17:07:14,532 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2019-09-16 17:07:14,542 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:14,550 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:07:14,567 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:07:14,595 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:14,595 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:14,595 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:14,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:14,596 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:14,596 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:14,596 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:14,596 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-09-16 17:07:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 17:07:14,619 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:14,620 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:14,622 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2117582365, now seen corresponding path program 1 times [2019-09-16 17:07:14,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:14,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:14,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:14,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:14,699 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:14,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:14,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:07:14,824 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:14,830 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:14,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:14,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:14,849 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-09-16 17:07:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:14,870 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-09-16 17:07:14,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:14,871 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-16 17:07:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:14,880 INFO L225 Difference]: With dead ends: 42 [2019-09-16 17:07:14,880 INFO L226 Difference]: Without dead ends: 35 [2019-09-16 17:07:14,882 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-16 17:07:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-16 17:07:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-16 17:07:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-09-16 17:07:14,929 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 24 [2019-09-16 17:07:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:14,931 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-09-16 17:07:14,931 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-09-16 17:07:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 17:07:14,933 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:14,934 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:14,934 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:14,935 INFO L82 PathProgramCache]: Analyzing trace with hash -95510826, now seen corresponding path program 1 times [2019-09-16 17:07:14,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:14,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:14,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:14,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:14,940 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:15,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:15,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:07:15,107 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:15,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:07:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:07:15,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:07:15,113 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2019-09-16 17:07:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:15,198 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2019-09-16 17:07:15,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:07:15,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-16 17:07:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:15,201 INFO L225 Difference]: With dead ends: 43 [2019-09-16 17:07:15,201 INFO L226 Difference]: Without dead ends: 40 [2019-09-16 17:07:15,202 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-16 17:07:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-09-16 17:07:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-16 17:07:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-09-16 17:07:15,217 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2019-09-16 17:07:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:15,218 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-09-16 17:07:15,219 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:07:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-09-16 17:07:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-16 17:07:15,222 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:15,223 INFO L407 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] [2019-09-16 17:07:15,223 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash -152003766, now seen corresponding path program 1 times [2019-09-16 17:07:15,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:15,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:15,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:15,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:15,234 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:07:15,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:15,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:07:15,402 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:15,402 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:07:15,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:07:15,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:07:15,403 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2019-09-16 17:07:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:15,435 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-09-16 17:07:15,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:07:15,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-09-16 17:07:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:15,437 INFO L225 Difference]: With dead ends: 39 [2019-09-16 17:07:15,437 INFO L226 Difference]: Without dead ends: 39 [2019-09-16 17:07:15,437 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:07:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-16 17:07:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-09-16 17:07:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-16 17:07:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-09-16 17:07:15,443 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 34 [2019-09-16 17:07:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:15,444 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-09-16 17:07:15,444 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:07:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-09-16 17:07:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-16 17:07:15,445 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:15,445 INFO L407 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, 1, 1, 1] [2019-09-16 17:07:15,446 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 733701937, now seen corresponding path program 1 times [2019-09-16 17:07:15,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:15,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:15,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:15,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:15,450 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:07:15,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:15,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:07:15,611 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:15,611 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:07:15,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:07:15,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:15,612 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2019-09-16 17:07:15,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:15,759 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-09-16 17:07:15,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:07:15,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2019-09-16 17:07:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:15,764 INFO L225 Difference]: With dead ends: 46 [2019-09-16 17:07:15,764 INFO L226 Difference]: Without dead ends: 44 [2019-09-16 17:07:15,764 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:07:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-16 17:07:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-09-16 17:07:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-16 17:07:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-09-16 17:07:15,771 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 41 [2019-09-16 17:07:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:15,771 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-09-16 17:07:15,771 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:07:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-09-16 17:07:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-16 17:07:15,773 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:15,773 INFO L407 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, 1, 1, 1] [2019-09-16 17:07:15,773 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:15,774 INFO L82 PathProgramCache]: Analyzing trace with hash -75644689, now seen corresponding path program 1 times [2019-09-16 17:07:15,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:15,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:15,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:15,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:15,777 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:07:15,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:07:15,917 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:07:15,919 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2019-09-16 17:07:15,928 INFO L207 CegarAbsIntRunner]: [0], [2], [9], [11], [13], [16], [20], [24], [25], [33], [39], [41], [42], [43], [44], [45], [47], [53], [55], [58], [62], [65], [68], [71], [76], [78], [84], [85], [86], [87], [90], [91], [92], [93], [94], [95], [96] [2019-09-16 17:07:15,978 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:07:15,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:07:16,057 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:07:16,058 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-16 17:07:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:16,062 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:07:16,106 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-16 17:07:16,106 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:07:16,109 INFO L420 sIntCurrentIteration]: We unified 40 AI predicates to 40 [2019-09-16 17:07:16,109 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:07:16,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:07:16,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-16 17:07:16,110 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:16,111 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:16,111 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 2 states. [2019-09-16 17:07:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:16,112 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-16 17:07:16,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:16,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2019-09-16 17:07:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:16,113 INFO L225 Difference]: With dead ends: 6 [2019-09-16 17:07:16,113 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:07:16,113 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:07:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:07:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:07:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:07:16,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-09-16 17:07:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:16,115 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:07:16,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:07:16,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:07:16,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:07:16 BoogieIcfgContainer [2019-09-16 17:07:16,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:07:16,121 INFO L168 Benchmark]: Toolchain (without parser) took 3004.51 ms. Allocated memory was 130.0 MB in the beginning and 216.5 MB in the end (delta: 86.5 MB). Free memory was 84.2 MB in the beginning and 118.6 MB in the end (delta: -34.4 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:16,122 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 130.0 MB. Free memory is still 103.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:07:16,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.05 ms. Allocated memory was 130.0 MB in the beginning and 198.2 MB in the end (delta: 68.2 MB). Free memory was 84.2 MB in the beginning and 158.8 MB in the end (delta: -74.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:16,124 INFO L168 Benchmark]: Boogie Preprocessor took 64.58 ms. Allocated memory is still 198.2 MB. Free memory was 158.8 MB in the beginning and 155.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:16,125 INFO L168 Benchmark]: RCFGBuilder took 680.65 ms. Allocated memory is still 198.2 MB. Free memory was 155.9 MB in the beginning and 109.7 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:16,126 INFO L168 Benchmark]: TraceAbstraction took 1594.46 ms. Allocated memory was 198.2 MB in the beginning and 216.5 MB in the end (delta: 18.4 MB). Free memory was 109.7 MB in the beginning and 118.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:16,130 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 130.0 MB. Free memory is still 103.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.05 ms. Allocated memory was 130.0 MB in the beginning and 198.2 MB in the end (delta: 68.2 MB). Free memory was 84.2 MB in the beginning and 158.8 MB in the end (delta: -74.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.58 ms. Allocated memory is still 198.2 MB. Free memory was 158.8 MB in the beginning and 155.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 680.65 ms. Allocated memory is still 198.2 MB. Free memory was 155.9 MB in the beginning and 109.7 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1594.46 ms. Allocated memory was 198.2 MB in the beginning and 216.5 MB in the end (delta: 18.4 MB). Free memory was 109.7 MB in the beginning and 118.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 614]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 161 SDtfs, 30 SDslu, 247 SDs, 0 SdLazy, 81 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.975 AbsIntWeakeningRatio, 1.675 AbsIntAvgWeakeningVarsNumRemoved, 0.15 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 10319 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 19/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...