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/dll2n_update_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:29:00,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:29:00,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:29:00,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:29:00,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:29:00,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:29:00,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:29:00,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:29:00,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:29:00,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:29:00,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:29:00,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:29:00,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:29:00,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:29:00,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:29:00,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:29:00,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:29:00,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:29:00,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:29:00,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:29:00,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:29:00,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:29:00,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:29:00,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:29:00,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:29:00,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:29:00,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:29:00,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:29:00,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:29:00,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:29:00,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:29:00,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:29:00,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:29:00,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:29:00,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:29:00,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:29:00,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:29:00,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:29:00,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:29:00,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:29:00,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:29:00,515 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 13:29:00,529 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:29:00,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:29:00,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:29:00,530 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:29:00,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:29:00,530 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:29:00,531 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:29:00,531 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:29:00,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:29:00,531 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:29:00,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:29:00,532 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:29:00,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:29:00,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:29:00,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:29:00,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:29:00,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:29:00,533 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:29:00,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:29:00,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:29:00,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:29:00,534 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:29:00,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:29:00,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:00,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:29:00,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:29:00,535 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:29:00,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:29:00,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:29:00,536 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:29:00,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:29:00,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:29:00,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:29:00,592 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:29:00,592 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:29:00,593 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all.i [2019-09-20 13:29:00,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74956918/6279579582f94e2ca3efcf8ca2fc6eb6/FLAGd09400b5e [2019-09-20 13:29:01,144 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:01,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_update_all.i [2019-09-20 13:29:01,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74956918/6279579582f94e2ca3efcf8ca2fc6eb6/FLAGd09400b5e [2019-09-20 13:29:01,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74956918/6279579582f94e2ca3efcf8ca2fc6eb6 [2019-09-20 13:29:01,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:01,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:01,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:01,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:01,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:01,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d8634e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01, skipping insertion in model container [2019-09-20 13:29:01,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,476 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:01,532 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:02,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:02,089 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:02,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:02,235 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:02,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02 WrapperNode [2019-09-20 13:29:02,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:02,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:02,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:02,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:02,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (1/1) ... [2019-09-20 13:29:02,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:02,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:02,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:02,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:02,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (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 13:29:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:29:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:29:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-09-20 13:29:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-09-20 13:29:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_get_data_at [2019-09-20 13:29:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_update_at [2019-09-20 13:29:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:02,386 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:02,387 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:02,388 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:02,389 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:02,390 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:02,391 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:02,392 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:02,393 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:02,394 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:02,395 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-09-20 13:29:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-09-20 13:29:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure dll_get_data_at [2019-09-20 13:29:02,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure dll_update_at [2019-09-20 13:29:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:02,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:02,827 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:02,999 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:02,999 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-20 13:29:03,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:03 BoogieIcfgContainer [2019-09-20 13:29:03,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:03,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:03,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:03,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:03,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:01" (1/3) ... [2019-09-20 13:29:03,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647ffaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:03, skipping insertion in model container [2019-09-20 13:29:03,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:02" (2/3) ... [2019-09-20 13:29:03,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647ffaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:03, skipping insertion in model container [2019-09-20 13:29:03,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:03" (3/3) ... [2019-09-20 13:29:03,009 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all.i [2019-09-20 13:29:03,019 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:03,028 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:03,045 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:03,069 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:03,070 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:03,070 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:03,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:03,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:03,070 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:03,070 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:03,071 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-09-20 13:29:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 13:29:03,098 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:03,099 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 13:29:03,101 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1303429635, now seen corresponding path program 1 times [2019-09-20 13:29:03,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:03,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:03,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,180 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:03,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:03,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:03,284 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:03,290 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:03,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:03,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:03,310 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2019-09-20 13:29:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:03,331 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-09-20 13:29:03,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:03,333 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-09-20 13:29:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:03,343 INFO L225 Difference]: With dead ends: 51 [2019-09-20 13:29:03,343 INFO L226 Difference]: Without dead ends: 38 [2019-09-20 13:29:03,345 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 13:29:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-20 13:29:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-09-20 13:29:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-20 13:29:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-09-20 13:29:03,388 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2019-09-20 13:29:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:03,389 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-09-20 13:29:03,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-09-20 13:29:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 13:29:03,390 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:03,391 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 13:29:03,391 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2048382207, now seen corresponding path program 1 times [2019-09-20 13:29:03,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:03,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:03,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,397 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,552 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 13:29:03,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:03,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:29:03,554 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:03,556 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:29:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:29:03,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:29:03,558 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2019-09-20 13:29:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:03,631 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-09-20 13:29:03,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:03,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-09-20 13:29:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:03,650 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:29:03,650 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:29:03,651 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:29:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-09-20 13:29:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:29:03,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-09-20 13:29:03,660 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2019-09-20 13:29:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:03,661 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-09-20 13:29:03,661 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:29:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-09-20 13:29:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-20 13:29:03,662 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:03,662 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] [2019-09-20 13:29:03,663 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1036290808, now seen corresponding path program 1 times [2019-09-20 13:29:03,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:03,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:03,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,668 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:03,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:03,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:03,764 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:03,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:03,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:03,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:03,766 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2019-09-20 13:29:03,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:03,795 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2019-09-20 13:29:03,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:03,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-09-20 13:29:03,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:03,798 INFO L225 Difference]: With dead ends: 43 [2019-09-20 13:29:03,798 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:29:03,799 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:29:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-09-20 13:29:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-20 13:29:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2019-09-20 13:29:03,804 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 30 [2019-09-20 13:29:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:03,804 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2019-09-20 13:29:03,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2019-09-20 13:29:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-20 13:29:03,806 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:03,806 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] [2019-09-20 13:29:03,806 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1569732746, now seen corresponding path program 1 times [2019-09-20 13:29:03,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:03,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:03,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,811 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,884 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 13:29:03,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:03,885 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:03,885 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2019-09-20 13:29:03,887 INFO L207 CegarAbsIntRunner]: [21], [28], [34], [35], [61], [62], [63], [65], [71], [80], [88], [90], [93], [103], [108], [115], [117], [123], [125], [130], [132], [136], [137], [143], [144], [147], [148], [153], [154], [155] [2019-09-20 13:29:03,922 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:03,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:04,004 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:04,006 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 37 root evaluator evaluations with a maximum evaluation depth of 4. Performed 37 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 29 variables. [2019-09-20 13:29:04,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:04,010 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:04,047 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 82.92% of their original sizes. [2019-09-20 13:29:04,047 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:04,079 INFO L420 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-09-20 13:29:04,079 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:04,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:04,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2019-09-20 13:29:04,080 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:04,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:29:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:29:04,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:29:04,082 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 6 states. [2019-09-20 13:29:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:04,097 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-09-20 13:29:04,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:29:04,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-09-20 13:29:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:04,098 INFO L225 Difference]: With dead ends: 9 [2019-09-20 13:29:04,098 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:04,098 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:29:04,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:04,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-09-20 13:29:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:04,100 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:04,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:29:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:04,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:04,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:04 BoogieIcfgContainer [2019-09-20 13:29:04,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:04,108 INFO L168 Benchmark]: Toolchain (without parser) took 2649.24 ms. Allocated memory was 140.0 MB in the beginning and 222.8 MB in the end (delta: 82.8 MB). Free memory was 86.2 MB in the beginning and 155.2 MB in the end (delta: -69.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:04,109 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:04,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 777.22 ms. Allocated memory was 140.0 MB in the beginning and 197.7 MB in the end (delta: 57.7 MB). Free memory was 86.0 MB in the beginning and 161.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:04,111 INFO L168 Benchmark]: Boogie Preprocessor took 64.33 ms. Allocated memory is still 197.7 MB. Free memory was 161.4 MB in the beginning and 158.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:04,111 INFO L168 Benchmark]: RCFGBuilder took 699.71 ms. Allocated memory is still 197.7 MB. Free memory was 158.3 MB in the beginning and 109.5 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:04,112 INFO L168 Benchmark]: TraceAbstraction took 1103.12 ms. Allocated memory was 197.7 MB in the beginning and 222.8 MB in the end (delta: 25.2 MB). Free memory was 109.5 MB in the beginning and 155.2 MB in the end (delta: -45.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:29:04,116 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 777.22 ms. Allocated memory was 140.0 MB in the beginning and 197.7 MB in the end (delta: 57.7 MB). Free memory was 86.0 MB in the beginning and 161.4 MB in the end (delta: -75.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.33 ms. Allocated memory is still 197.7 MB. Free memory was 161.4 MB in the beginning and 158.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.71 ms. Allocated memory is still 197.7 MB. Free memory was 158.3 MB in the beginning and 109.5 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1103.12 ms. Allocated memory was 197.7 MB in the beginning and 222.8 MB in the end (delta: 25.2 MB). Free memory was 109.5 MB in the beginning and 155.2 MB in the end (delta: -45.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: 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, 64 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 21 SDslu, 152 SDs, 0 SdLazy, 29 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 0.9344827586206897 AbsIntWeakeningRatio, 1.206896551724138 AbsIntAvgWeakeningVarsNumRemoved, 0.9310344827586207 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 4408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...