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_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:07:19,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:19,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:19,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:19,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:19,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:19,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:19,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:19,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:19,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:19,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:19,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:19,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:19,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:19,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:19,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:19,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:19,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:19,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:19,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:19,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:19,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:19,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:19,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:19,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:19,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:19,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:19,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:19,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:19,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:19,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:19,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:19,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:19,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:19,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:19,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:19,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:19,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:19,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:19,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:19,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:19,677 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 17:07:19,702 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:19,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:19,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:19,703 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:19,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:19,704 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:19,704 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:19,704 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:19,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:19,705 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:19,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:19,706 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:19,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:19,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:19,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:19,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:19,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:19,708 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:19,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:19,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:19,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:19,708 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:19,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:19,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:19,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:19,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:19,710 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:19,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:19,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:19,710 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:19,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:19,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:19,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:19,787 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:19,787 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:19,788 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2019-09-16 17:07:19,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399e9b2c0/92fb66e2db934913ad0c7e5eac0e48b9/FLAGb182a4c11 [2019-09-16 17:07:20,441 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:20,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2019-09-16 17:07:20,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399e9b2c0/92fb66e2db934913ad0c7e5eac0e48b9/FLAGb182a4c11 [2019-09-16 17:07:20,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399e9b2c0/92fb66e2db934913ad0c7e5eac0e48b9 [2019-09-16 17:07:20,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:20,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:20,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:20,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:20,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:20,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fd210c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:20, skipping insertion in model container [2019-09-16 17:07:20,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:20" (1/1) ... [2019-09-16 17:07:20,723 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:20,780 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:21,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:21,260 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:21,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:21,361 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:21,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21 WrapperNode [2019-09-16 17:07:21,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:21,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:21,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:21,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:21,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (1/1) ... [2019-09-16 17:07:21,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:21,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:21,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:21,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:21,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (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 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-09-16 17:07:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2019-09-16 17:07:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-16 17:07:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-16 17:07:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 17:07:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 17:07:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 17:07:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 17:07:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 17:07:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 17:07:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 17:07:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 17:07:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 17:07:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 17:07:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 17:07:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 17:07:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 17:07:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 17:07:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 17:07:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 17:07:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 17:07:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 17:07:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 17:07:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 17:07:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 17:07:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 17:07:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 17:07:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 17:07:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 17:07:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 17:07:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 17:07:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 17:07:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 17:07:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 17:07:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 17:07:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 17:07:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 17:07:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 17:07:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 17:07:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 17:07:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 17:07:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 17:07:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 17:07:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 17:07:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 17:07:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 17:07:21,491 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 17:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 17:07:21,493 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 17:07:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 17:07:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 17:07:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 17:07:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 17:07:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 17:07:21,494 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 17:07:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 17:07:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 17:07:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 17:07:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 17:07:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 17:07:21,495 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 17:07:21,496 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 17:07:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 17:07:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-16 17:07:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-16 17:07:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-09-16 17:07:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:21,922 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-16 17:07:22,070 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:22,071 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-16 17:07:22,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:22 BoogieIcfgContainer [2019-09-16 17:07:22,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:22,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:22,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:22,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:22,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:20" (1/3) ... [2019-09-16 17:07:22,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f44c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:22, skipping insertion in model container [2019-09-16 17:07:22,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:21" (2/3) ... [2019-09-16 17:07:22,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f44c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:22, skipping insertion in model container [2019-09-16 17:07:22,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:22" (3/3) ... [2019-09-16 17:07:22,081 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2019-09-16 17:07:22,092 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:22,100 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:07:22,118 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:07:22,147 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:22,147 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:22,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:22,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:22,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:22,148 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:22,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:22,149 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-09-16 17:07:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 17:07:22,177 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:22,179 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:22,181 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:22,187 INFO L82 PathProgramCache]: Analyzing trace with hash -638260892, now seen corresponding path program 1 times [2019-09-16 17:07:22,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:22,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:22,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,254 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:22,360 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 17:07:22,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:22,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:07:22,364 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:22,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:22,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:22,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:22,388 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-09-16 17:07:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:22,412 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2019-09-16 17:07:22,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:22,414 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-16 17:07:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:22,426 INFO L225 Difference]: With dead ends: 38 [2019-09-16 17:07:22,426 INFO L226 Difference]: Without dead ends: 31 [2019-09-16 17:07:22,430 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 17:07:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-16 17:07:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-09-16 17:07:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-16 17:07:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-09-16 17:07:22,466 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 17 [2019-09-16 17:07:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:22,466 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-09-16 17:07:22,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-09-16 17:07:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 17:07:22,467 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:22,467 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:07:22,467 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:22,468 INFO L82 PathProgramCache]: Analyzing trace with hash 936264387, now seen corresponding path program 1 times [2019-09-16 17:07:22,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:22,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:22,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,473 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:22,565 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 17:07:22,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:22,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:07:22,567 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:22,569 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:07:22,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:07:22,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:07:22,570 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 4 states. [2019-09-16 17:07:22,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:22,630 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-09-16 17:07:22,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:07:22,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-16 17:07:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:22,635 INFO L225 Difference]: With dead ends: 34 [2019-09-16 17:07:22,635 INFO L226 Difference]: Without dead ends: 34 [2019-09-16 17:07:22,636 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 [2019-09-16 17:07:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-16 17:07:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-09-16 17:07:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-16 17:07:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-09-16 17:07:22,648 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 17 [2019-09-16 17:07:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:22,648 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-09-16 17:07:22,648 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:07:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-09-16 17:07:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-16 17:07:22,649 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:22,650 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] [2019-09-16 17:07:22,650 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:22,651 INFO L82 PathProgramCache]: Analyzing trace with hash -183361306, now seen corresponding path program 1 times [2019-09-16 17:07:22,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:22,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:22,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:22,656 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:07:22,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:07:22,816 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:07:22,837 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-16 17:07:22,840 INFO L207 CegarAbsIntRunner]: [7], [13], [23], [24], [35], [36], [37], [39], [45], [47], [50], [54], [57], [60], [65], [66], [74], [75], [76], [77], [78], [79], [80] [2019-09-16 17:07:22,880 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:07:22,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:07:22,948 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:07:22,950 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 17:07:22,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:22,954 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:07:22,989 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-16 17:07:22,989 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:07:22,991 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-16 17:07:22,992 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:07:22,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:07:22,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2019-09-16 17:07:22,995 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:22,996 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:22,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:22,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:22,996 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 2 states. [2019-09-16 17:07:22,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:22,999 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-16 17:07:22,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:22,999 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-09-16 17:07:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:22,999 INFO L225 Difference]: With dead ends: 6 [2019-09-16 17:07:22,999 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:07:23,000 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:07:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:07:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:07:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:07:23,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-16 17:07:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:23,003 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:07:23,004 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:07:23,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:07:23,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:07:23 BoogieIcfgContainer [2019-09-16 17:07:23,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:07:23,024 INFO L168 Benchmark]: Toolchain (without parser) took 2307.01 ms. Allocated memory was 131.1 MB in the beginning and 218.6 MB in the end (delta: 87.6 MB). Free memory was 85.0 MB in the beginning and 175.0 MB in the end (delta: -90.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:07:23,025 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.32 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 84.8 MB in the beginning and 158.6 MB in the end (delta: -73.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,027 INFO L168 Benchmark]: Boogie Preprocessor took 62.14 ms. Allocated memory is still 197.7 MB. Free memory was 158.6 MB in the beginning and 156.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,030 INFO L168 Benchmark]: RCFGBuilder took 647.16 ms. Allocated memory is still 197.7 MB. Free memory was 156.0 MB in the beginning and 112.7 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:23,031 INFO L168 Benchmark]: TraceAbstraction took 937.59 ms. Allocated memory was 197.7 MB in the beginning and 218.6 MB in the end (delta: 21.0 MB). Free memory was 112.7 MB in the beginning and 175.0 MB in the end (delta: -62.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:07:23,036 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 131.1 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.32 ms. Allocated memory was 131.1 MB in the beginning and 197.7 MB in the end (delta: 66.6 MB). Free memory was 84.8 MB in the beginning and 158.6 MB in the end (delta: -73.7 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.14 ms. Allocated memory is still 197.7 MB. Free memory was 158.6 MB in the beginning and 156.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 647.16 ms. Allocated memory is still 197.7 MB. Free memory was 156.0 MB in the beginning and 112.7 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 937.59 ms. Allocated memory was 197.7 MB in the beginning and 218.6 MB in the end (delta: 21.0 MB). Free memory was 112.7 MB in the beginning and 175.0 MB in the end (delta: -62.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 598]: 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, 45 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 75 SDtfs, 9 SDslu, 50 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.9545454545454546 AbsIntWeakeningRatio, 1.4545454545454546 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1532 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...