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/dll-optional-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:46:59,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:46:59,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:46:59,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:46:59,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:46:59,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:46:59,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:46:59,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:46:59,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:46:59,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:46:59,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:46:59,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:46:59,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:46:59,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:46:59,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:46:59,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:46:59,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:46:59,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:46:59,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:46:59,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:46:59,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:47:00,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:47:00,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:47:00,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:47:00,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:47:00,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:47:00,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:47:00,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:47:00,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:47:00,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:47:00,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:47:00,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:47:00,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:47:00,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:47:00,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:47:00,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:47:00,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:47:00,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:47:00,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:47:00,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:47:00,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:47:00,028 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 01:47:00,044 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:47:00,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:47:00,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:47:00,045 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:47:00,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:47:00,046 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:47:00,046 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:47:00,047 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:47:00,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:47:00,047 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:47:00,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:47:00,048 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:47:00,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:47:00,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:47:00,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:47:00,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:47:00,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:47:00,049 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:47:00,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:47:00,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:47:00,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:47:00,050 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:47:00,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:47:00,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:47:00,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:47:00,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:47:00,051 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:47:00,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:47:00,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:47:00,052 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:47:00,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:47:00,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:47:00,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:47:00,099 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:47:00,100 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:47:00,101 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional-1.i [2019-09-10 01:47:00,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e79a844c/4373d3cc7a034743ba3f85c9d1486c64/FLAGfae666d64 [2019-09-10 01:47:00,616 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:47:00,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-optional-1.i [2019-09-10 01:47:00,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e79a844c/4373d3cc7a034743ba3f85c9d1486c64/FLAGfae666d64 [2019-09-10 01:47:00,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e79a844c/4373d3cc7a034743ba3f85c9d1486c64 [2019-09-10 01:47:00,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:47:00,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:47:00,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:00,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:47:00,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:47:00,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:00" (1/1) ... [2019-09-10 01:47:00,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55de6fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:00, skipping insertion in model container [2019-09-10 01:47:00,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:00" (1/1) ... [2019-09-10 01:47:00,939 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:47:00,995 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:47:01,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:01,496 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:47:01,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:01,595 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:47:01,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01 WrapperNode [2019-09-10 01:47:01,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:01,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:47:01,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:47:01,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:47:01,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (1/1) ... [2019-09-10 01:47:01,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:47:01,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:47:01,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:47:01,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:47:01,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (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 01:47:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:47:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:47:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:47:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:47:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:47:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:47:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:47:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:47:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:47:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:47:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:47:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:47:01,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:47:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:47:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:47:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:47:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:47:01,727 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:47:01,728 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:47:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:47:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:47:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:47:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:47:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:47:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:47:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:47:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:47:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:47:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:47:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:47:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:47:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:47:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:47:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:47:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:47:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:47:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:47:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:47:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:47:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:47:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:47:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:47:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:47:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:47:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:47:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:47:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:47:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:47:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:47:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:47:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:47:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:47:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:47:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:47:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:47:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:47:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:47:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:47:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:47:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:47:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:47:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:47:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:47:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:47:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:47:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:47:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:47:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:47:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:47:02,366 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:47:02,366 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 01:47:02,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:02 BoogieIcfgContainer [2019-09-10 01:47:02,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:47:02,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:47:02,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:47:02,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:47:02,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:47:00" (1/3) ... [2019-09-10 01:47:02,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304bc944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:02, skipping insertion in model container [2019-09-10 01:47:02,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:01" (2/3) ... [2019-09-10 01:47:02,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304bc944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:02, skipping insertion in model container [2019-09-10 01:47:02,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:02" (3/3) ... [2019-09-10 01:47:02,376 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-optional-1.i [2019-09-10 01:47:02,385 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:47:02,393 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:47:02,410 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:47:02,437 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:47:02,437 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:47:02,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:47:02,438 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:47:02,438 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:47:02,438 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:47:02,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:47:02,439 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:47:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-09-10 01:47:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:47:02,464 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:02,466 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:02,468 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:02,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1058539334, now seen corresponding path program 1 times [2019-09-10 01:47:02,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:02,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:02,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:02,538 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:02,652 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 01:47:02,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:02,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:47:02,655 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:02,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:02,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:02,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:02,679 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-09-10 01:47:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:02,696 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2019-09-10 01:47:02,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:02,697 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-10 01:47:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:02,706 INFO L225 Difference]: With dead ends: 34 [2019-09-10 01:47:02,706 INFO L226 Difference]: Without dead ends: 25 [2019-09-10 01:47:02,708 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 01:47:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-10 01:47:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-09-10 01:47:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-10 01:47:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-09-10 01:47:02,748 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 19 [2019-09-10 01:47:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:02,749 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-09-10 01:47:02,749 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-09-10 01:47:02,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:47:02,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:02,750 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:02,751 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash 984767148, now seen corresponding path program 1 times [2019-09-10 01:47:02,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:02,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:02,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:02,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:02,754 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:02,891 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 01:47:02,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:02,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:47:02,892 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:02,894 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:47:02,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:47:02,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:47:02,895 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 3 states. [2019-09-10 01:47:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:02,911 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2019-09-10 01:47:02,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:47:02,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-09-10 01:47:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:02,912 INFO L225 Difference]: With dead ends: 26 [2019-09-10 01:47:02,913 INFO L226 Difference]: Without dead ends: 26 [2019-09-10 01:47:02,914 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 01:47:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-10 01:47:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-10 01:47:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-10 01:47:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-09-10 01:47:02,919 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 20 [2019-09-10 01:47:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:02,920 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-09-10 01:47:02,920 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:47:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2019-09-10 01:47:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:47:02,921 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:02,921 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:02,922 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:02,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:02,922 INFO L82 PathProgramCache]: Analyzing trace with hash 984769070, now seen corresponding path program 1 times [2019-09-10 01:47:02,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:02,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:02,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:02,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:02,925 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:03,054 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 01:47:03,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:03,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:47:03,055 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:03,055 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:47:03,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:47:03,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:47:03,056 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 6 states. [2019-09-10 01:47:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:03,292 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2019-09-10 01:47:03,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:47:03,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-10 01:47:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:03,294 INFO L225 Difference]: With dead ends: 40 [2019-09-10 01:47:03,294 INFO L226 Difference]: Without dead ends: 40 [2019-09-10 01:47:03,295 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-09-10 01:47:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-10 01:47:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2019-09-10 01:47:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 01:47:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-09-10 01:47:03,300 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 20 [2019-09-10 01:47:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:03,301 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-09-10 01:47:03,301 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:47:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2019-09-10 01:47:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:47:03,302 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:03,303 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:03,303 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:03,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:03,303 INFO L82 PathProgramCache]: Analyzing trace with hash 982922028, now seen corresponding path program 1 times [2019-09-10 01:47:03,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:03,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:03,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:03,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:03,306 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:03,639 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 01:47:03,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:03,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 01:47:03,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:03,642 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 01:47:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 01:47:03,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:47:03,643 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 8 states. [2019-09-10 01:47:04,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:04,105 INFO L93 Difference]: Finished difference Result 70 states and 91 transitions. [2019-09-10 01:47:04,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:47:04,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-09-10 01:47:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:04,109 INFO L225 Difference]: With dead ends: 70 [2019-09-10 01:47:04,109 INFO L226 Difference]: Without dead ends: 70 [2019-09-10 01:47:04,110 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-09-10 01:47:04,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-10 01:47:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 43. [2019-09-10 01:47:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-10 01:47:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2019-09-10 01:47:04,124 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 20 [2019-09-10 01:47:04,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:04,125 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2019-09-10 01:47:04,125 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 01:47:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2019-09-10 01:47:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:47:04,128 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:04,129 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:04,129 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:04,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1535190864, now seen corresponding path program 1 times [2019-09-10 01:47:04,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:04,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:04,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:04,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:04,132 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:04,216 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 01:47:04,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:04,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:47:04,217 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:04,217 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:47:04,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:47:04,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:47:04,218 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand 6 states. [2019-09-10 01:47:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:04,427 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2019-09-10 01:47:04,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:47:04,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-10 01:47:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:04,430 INFO L225 Difference]: With dead ends: 61 [2019-09-10 01:47:04,431 INFO L226 Difference]: Without dead ends: 61 [2019-09-10 01:47:04,431 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-10 01:47:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-09-10 01:47:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2019-09-10 01:47:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-10 01:47:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2019-09-10 01:47:04,437 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20 [2019-09-10 01:47:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:04,438 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2019-09-10 01:47:04,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:47:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2019-09-10 01:47:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-10 01:47:04,439 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:04,439 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:04,439 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:04,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1453356392, now seen corresponding path program 1 times [2019-09-10 01:47:04,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:04,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:04,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:04,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:04,442 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:04,509 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 01:47:04,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:04,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:47:04,510 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:04,522 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:47:04,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:47:04,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:47:04,523 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 6 states. [2019-09-10 01:47:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:04,809 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2019-09-10 01:47:04,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-10 01:47:04,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-10 01:47:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:04,811 INFO L225 Difference]: With dead ends: 89 [2019-09-10 01:47:04,811 INFO L226 Difference]: Without dead ends: 89 [2019-09-10 01:47:04,812 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-10 01:47:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-09-10 01:47:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 49. [2019-09-10 01:47:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-09-10 01:47:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2019-09-10 01:47:04,819 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2019-09-10 01:47:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:04,819 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2019-09-10 01:47:04,820 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:47:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2019-09-10 01:47:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-10 01:47:04,821 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:04,821 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:04,821 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash 323498012, now seen corresponding path program 1 times [2019-09-10 01:47:04,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:04,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:04,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:04,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:04,823 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:04,912 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 01:47:04,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:04,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:47:04,912 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:04,913 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:47:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:47:04,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:47:04,914 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 6 states. [2019-09-10 01:47:05,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:05,184 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2019-09-10 01:47:05,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:47:05,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-10 01:47:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:05,186 INFO L225 Difference]: With dead ends: 78 [2019-09-10 01:47:05,187 INFO L226 Difference]: Without dead ends: 78 [2019-09-10 01:47:05,188 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:47:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-09-10 01:47:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2019-09-10 01:47:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-09-10 01:47:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2019-09-10 01:47:05,194 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2019-09-10 01:47:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:05,194 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2019-09-10 01:47:05,194 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:47:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2019-09-10 01:47:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-10 01:47:05,195 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:05,196 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:05,196 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:05,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:05,196 INFO L82 PathProgramCache]: Analyzing trace with hash 53120986, now seen corresponding path program 1 times [2019-09-10 01:47:05,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:05,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:05,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:05,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:05,198 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:05,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:47:05,507 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:47:05,508 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-10 01:47:05,510 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [14], [19], [22], [24], [27], [39], [48], [52], [55], [59], [62], [66], [71], [75], [76], [118], [119], [120] [2019-09-10 01:47:05,551 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:47:05,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:47:05,622 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:47:05,623 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 51 variables. [2019-09-10 01:47:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:05,628 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:47:05,663 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:47:05,664 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:47:05,665 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-10 01:47:05,665 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:47:05,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:47:05,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-09-10 01:47:05,666 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:05,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:05,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:05,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:05,667 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 2 states. [2019-09-10 01:47:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:05,668 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:47:05,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:05,669 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-09-10 01:47:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:05,669 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:47:05,669 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:47:05,670 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 01:47:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:47:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:47:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:47:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:47:05,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-10 01:47:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:05,671 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:47:05,671 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:47:05,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:47:05,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:47:05 BoogieIcfgContainer [2019-09-10 01:47:05,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:47:05,679 INFO L168 Benchmark]: Toolchain (without parser) took 4755.45 ms. Allocated memory was 134.7 MB in the beginning and 256.4 MB in the end (delta: 121.6 MB). Free memory was 89.6 MB in the beginning and 96.1 MB in the end (delta: -6.5 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:05,680 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:47:05,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.45 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 89.3 MB in the beginning and 166.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:05,682 INFO L168 Benchmark]: Boogie Preprocessor took 70.58 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 163.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:05,683 INFO L168 Benchmark]: RCFGBuilder took 699.69 ms. Allocated memory is still 201.9 MB. Free memory was 163.4 MB in the beginning and 116.4 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:05,684 INFO L168 Benchmark]: TraceAbstraction took 3307.62 ms. Allocated memory was 201.9 MB in the beginning and 256.4 MB in the end (delta: 54.5 MB). Free memory was 115.8 MB in the beginning and 96.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:05,688 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.45 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 89.3 MB in the beginning and 166.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.58 ms. Allocated memory is still 201.9 MB. Free memory was 166.6 MB in the beginning and 163.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.69 ms. Allocated memory is still 201.9 MB. Free memory was 163.4 MB in the beginning and 116.4 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3307.62 ms. Allocated memory was 201.9 MB in the beginning and 256.4 MB in the end (delta: 54.5 MB). Free memory was 115.8 MB in the beginning and 96.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 998]: 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 3 procedures, 35 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 225 SDtfs, 286 SDslu, 431 SDs, 0 SdLazy, 429 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=6, 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, 0.9545454545454546 AbsIntWeakeningRatio, 2.1363636363636362 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 126 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 33256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...