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/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:06,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:06,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:06,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:06,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:06,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:06,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:06,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:06,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:06,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:06,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:06,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:06,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:06,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:06,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:06,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:06,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:06,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:06,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:06,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:06,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:06,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:06,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:06,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:06,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:06,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:06,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:06,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:06,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:06,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:06,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:06,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:06,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:06,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:06,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:06,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:06,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:06,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:06,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:06,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:06,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:06,606 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 [2019-09-20 13:29:06,621 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:06,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:06,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:06,622 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:06,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:06,623 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:06,623 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:06,623 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:06,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:06,624 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:06,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:06,625 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:06,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:06,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:06,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:06,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:06,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:06,626 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:06,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:06,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:06,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:06,627 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:06,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:06,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:06,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:06,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:06,628 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:06,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:06,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:06,629 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:06,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:06,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:06,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:06,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:06,676 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:06,676 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2019-09-20 13:29:06,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa9932ee/341ff0ad1fa045ed8e3c7ab623a4b15f/FLAG5022c1b6d [2019-09-20 13:29:07,223 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:07,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2019-09-20 13:29:07,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa9932ee/341ff0ad1fa045ed8e3c7ab623a4b15f/FLAG5022c1b6d [2019-09-20 13:29:07,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa9932ee/341ff0ad1fa045ed8e3c7ab623a4b15f [2019-09-20 13:29:07,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:07,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:07,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:07,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:07,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:07,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b582943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:07, skipping insertion in model container [2019-09-20 13:29:07,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:07" (1/1) ... [2019-09-20 13:29:07,603 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:07,653 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:08,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:08,130 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:08,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:08,243 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:08,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08 WrapperNode [2019-09-20 13:29:08,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:08,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:08,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:08,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:08,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (1/1) ... [2019-09-20 13:29:08,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:08,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:08,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:08,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:08,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (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 [2019-09-20 13:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-20 13:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-09-20 13:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2019-09-20 13:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2019-09-20 13:29:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:08,400 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:08,402 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:08,403 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:08,404 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:08,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:08,406 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:08,407 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:08,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2019-09-20 13:29:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:08,880 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:09,014 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:09,015 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-20 13:29:09,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:09 BoogieIcfgContainer [2019-09-20 13:29:09,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:09,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:09,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:09,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:09,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:07" (1/3) ... [2019-09-20 13:29:09,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:09, skipping insertion in model container [2019-09-20 13:29:09,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:08" (2/3) ... [2019-09-20 13:29:09,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:09, skipping insertion in model container [2019-09-20 13:29:09,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:09" (3/3) ... [2019-09-20 13:29:09,025 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2019-09-20 13:29:09,035 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:09,043 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:09,060 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:09,083 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:09,084 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:09,084 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:09,084 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:09,084 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:09,084 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:09,084 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:09,084 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-20 13:29:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 13:29:09,107 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:09,108 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, 1] [2019-09-20 13:29:09,110 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:09,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1559034541, now seen corresponding path program 1 times [2019-09-20 13:29:09,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:09,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:09,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,187 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:09,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:09,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:09,299 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:09,303 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:09,319 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-20 13:29:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:09,338 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-09-20 13:29:09,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:09,340 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-09-20 13:29:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:09,351 INFO L225 Difference]: With dead ends: 55 [2019-09-20 13:29:09,351 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:29:09,353 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 [2019-09-20 13:29:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:29:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-20 13:29:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 13:29:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-09-20 13:29:09,391 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2019-09-20 13:29:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:09,391 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-09-20 13:29:09,391 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-09-20 13:29:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 13:29:09,393 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:09,393 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, 1] [2019-09-20 13:29:09,393 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:09,394 INFO L82 PathProgramCache]: Analyzing trace with hash -404189262, now seen corresponding path program 1 times [2019-09-20 13:29:09,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:09,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:09,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,399 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:09,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:09,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:29:09,488 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:09,492 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:29:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:29:09,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:29:09,493 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 4 states. [2019-09-20 13:29:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:09,561 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2019-09-20 13:29:09,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:29:09,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-09-20 13:29:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:09,564 INFO L225 Difference]: With dead ends: 52 [2019-09-20 13:29:09,565 INFO L226 Difference]: Without dead ends: 52 [2019-09-20 13:29:09,565 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-20 13:29:09,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2019-09-20 13:29:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:29:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-20 13:29:09,578 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 25 [2019-09-20 13:29:09,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:09,597 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-20 13:29:09,597 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:29:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-20 13:29:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 13:29:09,598 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:09,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:09,599 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:09,600 INFO L82 PathProgramCache]: Analyzing trace with hash 856367100, now seen corresponding path program 1 times [2019-09-20 13:29:09,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:09,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:09,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:09,604 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:09,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:09,866 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:09,867 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2019-09-20 13:29:09,869 INFO L207 CegarAbsIntRunner]: [0], [7], [13], [14], [34], [41], [47], [48], [51], [57], [67], [68], [79], [80], [81], [83], [89], [91], [94], [98], [106], [108], [111], [121], [133], [134], [135], [136], [137], [138], [141], [142], [143] [2019-09-20 13:29:09,923 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:09,923 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:10,003 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:10,005 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 3. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 23 variables. [2019-09-20 13:29:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:10,008 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:10,048 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 86.19% of their original sizes. [2019-09-20 13:29:10,048 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:10,065 INFO L420 sIntCurrentIteration]: We unified 32 AI predicates to 32 [2019-09-20 13:29:10,066 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:10,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:10,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2019-09-20 13:29:10,067 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:10,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:10,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:10,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:10,068 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 5 states. [2019-09-20 13:29:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:10,095 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-09-20 13:29:10,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:10,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-09-20 13:29:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:10,095 INFO L225 Difference]: With dead ends: 16 [2019-09-20 13:29:10,096 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:10,096 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:10,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-09-20 13:29:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:10,097 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:10,097 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:10,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:10,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:10 BoogieIcfgContainer [2019-09-20 13:29:10,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:10,104 INFO L168 Benchmark]: Toolchain (without parser) took 2525.35 ms. Allocated memory was 141.6 MB in the beginning and 229.6 MB in the end (delta: 88.1 MB). Free memory was 88.1 MB in the beginning and 161.8 MB in the end (delta: -73.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:10,105 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:10,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.97 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 87.9 MB in the beginning and 166.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:10,106 INFO L168 Benchmark]: Boogie Preprocessor took 77.79 ms. Allocated memory is still 201.9 MB. Free memory was 166.1 MB in the beginning and 163.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:10,107 INFO L168 Benchmark]: RCFGBuilder took 694.08 ms. Allocated memory is still 201.9 MB. Free memory was 163.1 MB in the beginning and 116.1 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:10,108 INFO L168 Benchmark]: TraceAbstraction took 1084.51 ms. Allocated memory was 201.9 MB in the beginning and 229.6 MB in the end (delta: 27.8 MB). Free memory was 115.6 MB in the beginning and 161.8 MB in the end (delta: -46.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:10,112 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 141.6 MB. Free memory was 107.5 MB in the beginning and 107.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.97 ms. Allocated memory was 141.6 MB in the beginning and 201.9 MB in the end (delta: 60.3 MB). Free memory was 87.9 MB in the beginning and 166.1 MB in the end (delta: -78.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.79 ms. Allocated memory is still 201.9 MB. Free memory was 166.1 MB in the beginning and 163.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 694.08 ms. Allocated memory is still 201.9 MB. Free memory was 163.1 MB in the beginning and 116.1 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1084.51 ms. Allocated memory was 201.9 MB in the beginning and 229.6 MB in the end (delta: 27.8 MB). Free memory was 115.6 MB in the beginning and 161.8 MB in the end (delta: -46.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 619]: 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 11 procedures, 62 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 116 SDtfs, 26 SDslu, 105 SDs, 0 SdLazy, 11 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 0.953125 AbsIntWeakeningRatio, 1.1875 AbsIntAvgWeakeningVarsNumRemoved, 0.65625 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 3792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...