java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:07:18,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:18,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:18,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:18,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:18,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:18,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:18,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:18,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:18,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:18,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:18,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:18,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:18,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:18,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:18,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:18,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:18,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:18,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:18,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:18,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:18,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:18,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:18,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:18,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:18,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:18,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:18,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:18,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:18,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:18,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:18,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:18,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:18,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:18,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:18,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:18,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:18,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:18,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:18,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:18,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:18,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:07:18,852 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:18,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:18,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:18,854 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:18,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:18,855 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:18,855 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:18,855 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:18,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:18,856 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:18,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:18,857 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:18,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:18,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:18,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:18,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:18,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:18,858 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:18,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:18,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:18,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:18,859 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:18,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:18,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:18,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:18,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:18,860 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:18,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:18,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:18,860 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:18,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:18,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:18,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:18,909 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:18,909 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:18,910 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-09-16 17:07:18,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/268059cfe/4d8a835b5ef44cbda5003a8805673881/FLAGc3d457300 [2019-09-16 17:07:19,462 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:19,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-09-16 17:07:19,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/268059cfe/4d8a835b5ef44cbda5003a8805673881/FLAGc3d457300 [2019-09-16 17:07:19,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/268059cfe/4d8a835b5ef44cbda5003a8805673881 [2019-09-16 17:07:19,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:19,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:19,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:19,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:19,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:19,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:19" (1/1) ... [2019-09-16 17:07:19,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba2193a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:19, skipping insertion in model container [2019-09-16 17:07:19,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:19" (1/1) ... [2019-09-16 17:07:19,772 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:19,823 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:20,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:20,264 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:20,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:20,405 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:20,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20 WrapperNode [2019-09-16 17:07:20,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:20,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:20,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:20,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:20,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:20,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:20,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:20,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:20,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-16 17:07:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-16 17:07:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-16 17:07:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-16 17:07:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-16 17:07:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_first [2019-09-16 17:07:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-16 17:07:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-16 17:07:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 17:07:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 17:07:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 17:07:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 17:07:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 17:07:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 17:07:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 17:07:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 17:07:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 17:07:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 17:07:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 17:07:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 17:07:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 17:07:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 17:07:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 17:07:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 17:07:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 17:07:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 17:07:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 17:07:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 17:07:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 17:07:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 17:07:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 17:07:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 17:07:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 17:07:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 17:07:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 17:07:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 17:07:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 17:07:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 17:07:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 17:07:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 17:07:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 17:07:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 17:07:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 17:07:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 17:07:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 17:07:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 17:07:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 17:07:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 17:07:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 17:07:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 17:07:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 17:07:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 17:07:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 17:07:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 17:07:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 17:07:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 17:07:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 17:07:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 17:07:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 17:07:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:07:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 17:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 17:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 17:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 17:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 17:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 17:07:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 17:07:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 17:07:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 17:07:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 17:07:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 17:07:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 17:07:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 17:07:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 17:07:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 17:07:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 17:07:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 17:07:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 17:07:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 17:07:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 17:07:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 17:07:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 17:07:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 17:07:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 17:07:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-16 17:07:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-16 17:07:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_first [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:07:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:07:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:20,883 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-16 17:07:21,091 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:21,092 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-16 17:07:21,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:21 BoogieIcfgContainer [2019-09-16 17:07:21,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:21,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:21,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:21,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:21,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:19" (1/3) ... [2019-09-16 17:07:21,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f04d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:21, skipping insertion in model container [2019-09-16 17:07:21,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20" (2/3) ... [2019-09-16 17:07:21,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f04d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:21, skipping insertion in model container [2019-09-16 17:07:21,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:21" (3/3) ... [2019-09-16 17:07:21,101 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all.i [2019-09-16 17:07:21,109 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:21,116 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:07:21,133 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:07:21,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:21,157 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:21,157 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:21,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:21,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:21,158 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:21,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:21,158 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-09-16 17:07:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 17:07:21,185 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:21,186 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:21,188 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash 430323869, now seen corresponding path program 1 times [2019-09-16 17:07:21,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:21,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:21,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,266 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:21,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:21,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:07:21,398 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:21,408 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:21,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:21,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:21,428 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2019-09-16 17:07:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:21,449 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-09-16 17:07:21,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:21,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-16 17:07:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:21,460 INFO L225 Difference]: With dead ends: 43 [2019-09-16 17:07:21,460 INFO L226 Difference]: Without dead ends: 36 [2019-09-16 17:07:21,462 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-16 17:07:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-16 17:07:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-16 17:07:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-09-16 17:07:21,505 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2019-09-16 17:07:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:21,507 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-09-16 17:07:21,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-09-16 17:07:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 17:07:21,509 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:21,509 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:21,510 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash 430145123, now seen corresponding path program 1 times [2019-09-16 17:07:21,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:21,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:21,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,515 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:21,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:21,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:07:21,649 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:21,651 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:07:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:07:21,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:07:21,652 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-09-16 17:07:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:21,722 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-09-16 17:07:21,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:07:21,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-16 17:07:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:21,724 INFO L225 Difference]: With dead ends: 42 [2019-09-16 17:07:21,724 INFO L226 Difference]: Without dead ends: 39 [2019-09-16 17:07:21,725 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-16 17:07:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-09-16 17:07:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-16 17:07:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-09-16 17:07:21,733 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2019-09-16 17:07:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:21,733 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-09-16 17:07:21,733 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:07:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-09-16 17:07:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-16 17:07:21,735 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:21,735 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:21,735 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:21,736 INFO L82 PathProgramCache]: Analyzing trace with hash -452541733, now seen corresponding path program 1 times [2019-09-16 17:07:21,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:21,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:21,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,741 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:07:21,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:21,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:07:21,884 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:21,885 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:07:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:07:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:07:21,886 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2019-09-16 17:07:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:21,926 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-09-16 17:07:21,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:07:21,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-09-16 17:07:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:21,929 INFO L225 Difference]: With dead ends: 40 [2019-09-16 17:07:21,929 INFO L226 Difference]: Without dead ends: 40 [2019-09-16 17:07:21,930 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:07:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-16 17:07:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-09-16 17:07:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-16 17:07:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-09-16 17:07:21,944 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 32 [2019-09-16 17:07:21,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:21,945 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-09-16 17:07:21,945 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:07:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-09-16 17:07:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-16 17:07:21,948 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:21,948 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:21,950 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:21,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1201021362, now seen corresponding path program 1 times [2019-09-16 17:07:21,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:21,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:21,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:21,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:07:22,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:22,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:07:22,114 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:22,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:07:22,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:07:22,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:22,117 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2019-09-16 17:07:22,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:22,314 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-09-16 17:07:22,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:07:22,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-09-16 17:07:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:22,318 INFO L225 Difference]: With dead ends: 50 [2019-09-16 17:07:22,318 INFO L226 Difference]: Without dead ends: 48 [2019-09-16 17:07:22,319 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:07:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-16 17:07:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2019-09-16 17:07:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-16 17:07:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-09-16 17:07:22,328 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 39 [2019-09-16 17:07:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:22,329 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-09-16 17:07:22,329 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:07:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-09-16 17:07:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-16 17:07:22,331 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:22,331 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:22,331 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:22,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:22,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1388528326, now seen corresponding path program 1 times [2019-09-16 17:07:22,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:22,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:22,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,337 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:22,695 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2019-09-16 17:07:22,823 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2019-09-16 17:07:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-16 17:07:22,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:22,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:07:22,849 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:22,849 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:07:22,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:07:22,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:07:22,850 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2019-09-16 17:07:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:22,994 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-09-16 17:07:22,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:07:22,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2019-09-16 17:07:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:22,997 INFO L225 Difference]: With dead ends: 43 [2019-09-16 17:07:22,997 INFO L226 Difference]: Without dead ends: 43 [2019-09-16 17:07:22,997 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-16 17:07:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-16 17:07:23,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-16 17:07:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-16 17:07:23,009 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 42 [2019-09-16 17:07:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:23,010 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-16 17:07:23,010 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:07:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-16 17:07:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-16 17:07:23,011 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:23,011 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:23,012 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash -89881461, now seen corresponding path program 1 times [2019-09-16 17:07:23,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:23,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:23,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:23,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:23,020 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-16 17:07:23,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:07:23,124 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:07:23,125 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2019-09-16 17:07:23,127 INFO L207 CegarAbsIntRunner]: [7], [13], [15], [16], [17], [18], [19], [21], [28], [30], [32], [36], [39], [42], [47], [49], [56], [58], [60], [64], [65], [66], [71], [76], [79], [81], [85], [87], [93], [94], [95], [96], [97], [98], [99], [100], [101], [102], [103] [2019-09-16 17:07:23,165 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:07:23,165 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:07:23,228 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:07:23,229 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-16 17:07:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:23,232 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:07:23,265 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-16 17:07:23,266 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:07:23,268 INFO L420 sIntCurrentIteration]: We unified 43 AI predicates to 43 [2019-09-16 17:07:23,268 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:07:23,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:07:23,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-16 17:07:23,270 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:23,270 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:23,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:23,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:23,271 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 2 states. [2019-09-16 17:07:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:23,272 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-16 17:07:23,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:23,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 44 [2019-09-16 17:07:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:23,272 INFO L225 Difference]: With dead ends: 6 [2019-09-16 17:07:23,272 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:07:23,273 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:07:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:07:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:07:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:07:23,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2019-09-16 17:07:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:23,274 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:07:23,274 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:07:23,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:07:23,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:07:23 BoogieIcfgContainer [2019-09-16 17:07:23,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:07:23,282 INFO L168 Benchmark]: Toolchain (without parser) took 3526.20 ms. Allocated memory was 121.1 MB in the beginning and 185.6 MB in the end (delta: 64.5 MB). Free memory was 98.8 MB in the beginning and 87.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,283 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 99.1 MB. Free memory was 73.9 MB in the beginning and 73.8 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.76 ms. Allocated memory was 121.1 MB in the beginning and 149.4 MB in the end (delta: 28.3 MB). Free memory was 98.5 MB in the beginning and 119.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,285 INFO L168 Benchmark]: Boogie Preprocessor took 80.13 ms. Allocated memory is still 149.4 MB. Free memory was 119.1 MB in the beginning and 116.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,288 INFO L168 Benchmark]: RCFGBuilder took 606.27 ms. Allocated memory was 149.4 MB in the beginning and 186.1 MB in the end (delta: 36.7 MB). Free memory was 116.1 MB in the beginning and 162.4 MB in the end (delta: -46.4 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,290 INFO L168 Benchmark]: TraceAbstraction took 2185.74 ms. Allocated memory was 186.1 MB in the beginning and 185.6 MB in the end (delta: -524.3 kB). Free memory was 162.4 MB in the beginning and 87.5 MB in the end (delta: 75.0 MB). Peak memory consumption was 74.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,296 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 99.1 MB. Free memory was 73.9 MB in the beginning and 73.8 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.76 ms. Allocated memory was 121.1 MB in the beginning and 149.4 MB in the end (delta: 28.3 MB). Free memory was 98.5 MB in the beginning and 119.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.13 ms. Allocated memory is still 149.4 MB. Free memory was 119.1 MB in the beginning and 116.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 606.27 ms. Allocated memory was 149.4 MB in the beginning and 186.1 MB in the end (delta: 36.7 MB). Free memory was 116.1 MB in the beginning and 162.4 MB in the end (delta: -46.4 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2185.74 ms. Allocated memory was 186.1 MB in the beginning and 185.6 MB in the end (delta: -524.3 kB). Free memory was 162.4 MB in the beginning and 87.5 MB in the end (delta: 75.0 MB). Peak memory consumption was 74.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 612]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 50 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 36 SDslu, 333 SDs, 0 SdLazy, 134 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9767441860465116 AbsIntWeakeningRatio, 1.697674418604651 AbsIntAvgWeakeningVarsNumRemoved, 0.13953488372093023 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 20715 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 28/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...