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/forester-heap/sll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:47:14,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:47:14,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:47:14,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:47:14,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:47:14,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:47:14,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:47:14,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:47:14,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:47:14,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:47:14,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:47:14,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:47:14,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:47:14,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:47:14,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:47:14,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:47:14,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:47:14,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:47:14,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:47:14,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:47:14,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:47:14,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:47:14,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:47:14,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:47:14,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:47:14,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:47:14,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:47:14,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:47:14,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:47:14,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:47:14,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:47:14,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:47:14,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:47:15,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:47:15,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:47:15,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:47:15,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:47:15,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:47:15,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:47:15,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:47:15,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:47:15,004 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 [2019-09-10 01:47:15,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:47:15,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:47:15,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:47:15,029 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:47:15,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:47:15,030 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:47:15,030 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:47:15,030 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:47:15,031 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:47:15,031 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:47:15,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:47:15,032 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:47:15,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:47:15,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:47:15,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:47:15,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:47:15,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:47:15,033 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:47:15,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:47:15,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:47:15,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:47:15,034 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:47:15,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:47:15,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:47:15,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:47:15,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:47:15,035 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:47:15,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:47:15,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:47:15,036 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:47:15,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:47:15,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:47:15,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:47:15,098 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:47:15,099 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:47:15,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-1.i [2019-09-10 01:47:15,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322a3b582/3f29693642704f4181570c542c7d1c43/FLAG65a03123d [2019-09-10 01:47:15,726 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:47:15,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-1.i [2019-09-10 01:47:15,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322a3b582/3f29693642704f4181570c542c7d1c43/FLAG65a03123d [2019-09-10 01:47:16,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322a3b582/3f29693642704f4181570c542c7d1c43 [2019-09-10 01:47:16,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:47:16,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:47:16,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:16,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:47:16,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:47:16,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac5711d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16, skipping insertion in model container [2019-09-10 01:47:16,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,058 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:47:16,121 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:47:16,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:16,585 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:47:16,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:16,709 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:47:16,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16 WrapperNode [2019-09-10 01:47:16,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:16,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:47:16,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:47:16,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:47:16,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (1/1) ... [2019-09-10 01:47:16,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:47:16,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:47:16,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:47:16,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:47:16,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (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 [2019-09-10 01:47:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:47:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:47:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:47:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:47:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:47:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:47:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:47:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:47:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:47:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:47:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:47:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:47:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:47:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:47:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:47:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:47:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:47:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:47:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:47:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:47:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:47:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:47:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:47:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:47:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:47:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:47:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:47:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:47:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:47:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:47:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:47:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:47:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:47:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:47:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:47:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:47:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:47:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:47:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:47:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:47:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:47:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:47:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:47:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:47:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:47:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:47:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:47:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:47:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:47:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:47:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:47:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:47:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:47:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:47:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:47:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:47:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:47:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:47:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:47:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:47:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:47:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:47:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:47:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:47:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:47:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:47:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:47:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:47:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:47:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:47:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:47:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:47:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:47:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:47:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:47:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:47:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:47:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:47:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:47:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:47:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:47:17,460 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:47:17,460 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-09-10 01:47:17,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:17 BoogieIcfgContainer [2019-09-10 01:47:17,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:47:17,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:47:17,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:47:17,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:47:17,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:47:16" (1/3) ... [2019-09-10 01:47:17,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3860f88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:17, skipping insertion in model container [2019-09-10 01:47:17,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:16" (2/3) ... [2019-09-10 01:47:17,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3860f88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:17, skipping insertion in model container [2019-09-10 01:47:17,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:17" (3/3) ... [2019-09-10 01:47:17,475 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2019-09-10 01:47:17,485 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:47:17,494 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-09-10 01:47:17,510 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-09-10 01:47:17,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:47:17,532 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:47:17,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:47:17,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:47:17,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:47:17,535 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:47:17,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:47:17,536 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:47:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-10 01:47:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-10 01:47:17,571 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:17,572 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:17,574 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash 697609371, now seen corresponding path program 1 times [2019-09-10 01:47:17,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:17,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:17,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:17,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:17,630 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:17,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:17,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:47:17,750 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:17,755 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:17,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:17,774 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-10 01:47:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:17,792 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-09-10 01:47:17,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:17,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-10 01:47:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:17,802 INFO L225 Difference]: With dead ends: 37 [2019-09-10 01:47:17,802 INFO L226 Difference]: Without dead ends: 29 [2019-09-10 01:47:17,804 INFO L628 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 [2019-09-10 01:47:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-10 01:47:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-10 01:47:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-10 01:47:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-09-10 01:47:17,837 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2019-09-10 01:47:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:17,838 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-09-10 01:47:17,838 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-09-10 01:47:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-10 01:47:17,838 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:17,839 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:17,839 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:17,839 INFO L82 PathProgramCache]: Analyzing trace with hash 110085658, now seen corresponding path program 1 times [2019-09-10 01:47:17,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:17,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:17,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:17,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:17,842 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:17,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:17,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:47:17,994 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:17,995 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:47:17,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:47:17,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:47:17,996 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2019-09-10 01:47:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:18,103 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-09-10 01:47:18,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:47:18,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-09-10 01:47:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:18,105 INFO L225 Difference]: With dead ends: 38 [2019-09-10 01:47:18,105 INFO L226 Difference]: Without dead ends: 38 [2019-09-10 01:47:18,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:47:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-10 01:47:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2019-09-10 01:47:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 01:47:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-09-10 01:47:18,113 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 11 [2019-09-10 01:47:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:18,113 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-09-10 01:47:18,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:47:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-09-10 01:47:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:47:18,114 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:18,114 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:18,115 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1113502754, now seen corresponding path program 1 times [2019-09-10 01:47:18,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:18,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:18,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,117 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:18,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:18,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:47:18,189 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:18,190 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:47:18,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:47:18,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:47:18,190 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2019-09-10 01:47:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:18,218 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-09-10 01:47:18,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:47:18,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-10 01:47:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:18,221 INFO L225 Difference]: With dead ends: 49 [2019-09-10 01:47:18,222 INFO L226 Difference]: Without dead ends: 49 [2019-09-10 01:47:18,222 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:47:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-09-10 01:47:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2019-09-10 01:47:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-10 01:47:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2019-09-10 01:47:18,229 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 14 [2019-09-10 01:47:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:18,229 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-09-10 01:47:18,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:47:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2019-09-10 01:47:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:47:18,230 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:18,230 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:18,231 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:18,231 INFO L82 PathProgramCache]: Analyzing trace with hash 488230675, now seen corresponding path program 1 times [2019-09-10 01:47:18,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:18,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:18,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,233 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:18,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:18,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:47:18,282 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:18,282 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:47:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:47:18,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:47:18,286 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 3 states. [2019-09-10 01:47:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:18,301 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-09-10 01:47:18,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:47:18,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-10 01:47:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:18,303 INFO L225 Difference]: With dead ends: 37 [2019-09-10 01:47:18,303 INFO L226 Difference]: Without dead ends: 37 [2019-09-10 01:47:18,303 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:47:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-10 01:47:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-09-10 01:47:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-10 01:47:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-09-10 01:47:18,309 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2019-09-10 01:47:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:18,309 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-09-10 01:47:18,309 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:47:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-09-10 01:47:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:47:18,310 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:18,310 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:18,310 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:18,311 INFO L82 PathProgramCache]: Analyzing trace with hash 488232597, now seen corresponding path program 1 times [2019-09-10 01:47:18,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:18,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:18,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,313 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:18,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:18,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:47:18,568 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:18,568 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:47:18,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:47:18,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:47:18,569 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-09-10 01:47:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:18,785 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-09-10 01:47:18,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:47:18,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-10 01:47:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:18,787 INFO L225 Difference]: With dead ends: 45 [2019-09-10 01:47:18,787 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:47:18,787 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:47:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:47:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-09-10 01:47:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-10 01:47:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-09-10 01:47:18,792 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 16 [2019-09-10 01:47:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:18,792 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-09-10 01:47:18,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:47:18,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-09-10 01:47:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:47:18,793 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:18,793 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:18,794 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1339394310, now seen corresponding path program 1 times [2019-09-10 01:47:18,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:18,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:18,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:18,796 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:18,841 ERROR L253 erpolLogProxyWrapper]: Interpolant 7 not inductive: (Check returned sat) [2019-09-10 01:47:18,847 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:969) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-10 01:47:18,853 INFO L168 Benchmark]: Toolchain (without parser) took 2811.58 ms. Allocated memory was 133.7 MB in the beginning and 227.0 MB in the end (delta: 93.3 MB). Free memory was 87.3 MB in the beginning and 139.3 MB in the end (delta: -51.9 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:18,854 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 133.7 MB. Free memory is still 106.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:47:18,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.26 ms. Allocated memory was 133.7 MB in the beginning and 201.3 MB in the end (delta: 67.6 MB). Free memory was 87.3 MB in the beginning and 165.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:18,856 INFO L168 Benchmark]: Boogie Preprocessor took 100.82 ms. Allocated memory is still 201.3 MB. Free memory was 165.4 MB in the beginning and 162.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:18,856 INFO L168 Benchmark]: RCFGBuilder took 651.28 ms. Allocated memory is still 201.3 MB. Free memory was 162.8 MB in the beginning and 119.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:18,858 INFO L168 Benchmark]: TraceAbstraction took 1385.68 ms. Allocated memory was 201.3 MB in the beginning and 227.0 MB in the end (delta: 25.7 MB). Free memory was 118.8 MB in the beginning and 139.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:18,862 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 133.7 MB. Free memory is still 106.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.26 ms. Allocated memory was 133.7 MB in the beginning and 201.3 MB in the end (delta: 67.6 MB). Free memory was 87.3 MB in the beginning and 165.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.82 ms. Allocated memory is still 201.3 MB. Free memory was 165.4 MB in the beginning and 162.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.28 ms. Allocated memory is still 201.3 MB. Free memory was 162.8 MB in the beginning and 119.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1385.68 ms. Allocated memory was 201.3 MB in the beginning and 227.0 MB in the end (delta: 25.7 MB). Free memory was 118.8 MB in the beginning and 139.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:969) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...