/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:56:31,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:56:31,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:56:31,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:56:31,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:56:31,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:56:31,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:56:31,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:56:31,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:56:31,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:56:31,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:56:31,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:56:31,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:56:31,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:56:31,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:56:31,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:56:31,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:56:31,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:56:31,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:56:31,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:56:31,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:56:31,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:56:31,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:56:31,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:56:31,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:56:31,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:56:31,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:56:31,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:56:31,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:56:31,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:56:31,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:56:31,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:56:31,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:56:31,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:56:31,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:56:31,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:56:31,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:56:31,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:56:31,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:56:31,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:56:31,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:56:31,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:56:31,900 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:56:31,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:56:31,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:56:31,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:56:31,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:56:31,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:56:31,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:56:31,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:56:31,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:56:31,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:56:31,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:56:31,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:56:31,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:56:31,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:56:31,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:56:31,905 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:56:31,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:56:31,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:56:31,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:56:31,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:56:31,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:56:31,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:56:31,907 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:56:32,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:56:32,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:56:32,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:56:32,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:56:32,323 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:56:32,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-11-07 00:56:32,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed7562c7/ec8b433aab1e414ca9ecf0eff76eafef/FLAG86879609a [2020-11-07 00:56:33,224 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:56:33,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-11-07 00:56:33,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed7562c7/ec8b433aab1e414ca9ecf0eff76eafef/FLAG86879609a [2020-11-07 00:56:33,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed7562c7/ec8b433aab1e414ca9ecf0eff76eafef [2020-11-07 00:56:33,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:56:33,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:56:33,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:33,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:56:33,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:56:33,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:33" (1/1) ... [2020-11-07 00:56:33,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c86ec56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:33, skipping insertion in model container [2020-11-07 00:56:33,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:33" (1/1) ... [2020-11-07 00:56:33,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:56:33,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:56:33,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:33,948 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:56:34,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:34,091 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:56:34,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34 WrapperNode [2020-11-07 00:56:34,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:34,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:56:34,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:56:34,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:56:34,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (1/1) ... [2020-11-07 00:56:34,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:56:34,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:56:34,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:56:34,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:56:34,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (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 [2020-11-07 00:56:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:56:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:56:34,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:56:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 00:56:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 00:56:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-07 00:56:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-07 00:56:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-07 00:56:34,323 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-07 00:56:34,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:56:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:56:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:56:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:56:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:56:34,324 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:56:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:56:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:56:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:56:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:56:34,325 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:56:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:56:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:56:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:56:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:56:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:56:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:56:34,327 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:56:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 00:56:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 00:56:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-07 00:56:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-07 00:56:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-07 00:56:34,328 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:56:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:56:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:56:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:56:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:56:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:56:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:56:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:56:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:56:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:56:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:56:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:56:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:56:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:56:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:56:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:56:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:56:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:56:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:56:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:56:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:56:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:56:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:56:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:56:34,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:56:34,664 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-07 00:56:34,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:56:34,999 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 00:56:35,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:35 BoogieIcfgContainer [2020-11-07 00:56:35,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:56:35,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:56:35,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:56:35,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:56:35,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:33" (1/3) ... [2020-11-07 00:56:35,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ccb3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:35, skipping insertion in model container [2020-11-07 00:56:35,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:34" (2/3) ... [2020-11-07 00:56:35,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ccb3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:35, skipping insertion in model container [2020-11-07 00:56:35,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:35" (3/3) ... [2020-11-07 00:56:35,011 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-07 00:56:35,028 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:56:35,033 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:56:35,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:56:35,079 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:56:35,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:56:35,080 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:56:35,080 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:56:35,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:56:35,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:56:35,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:56:35,081 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:56:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-07 00:56:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 00:56:35,115 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:35,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:35,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash -656857694, now seen corresponding path program 1 times [2020-11-07 00:56:35,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:35,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231257297] [2020-11-07 00:56:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:35,257 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:35,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:35,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231257297] [2020-11-07 00:56:35,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:35,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:56:35,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371444620] [2020-11-07 00:56:35,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:56:35,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:35,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:56:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:56:35,555 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-11-07 00:56:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:35,974 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2020-11-07 00:56:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:56:35,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-07 00:56:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:36,002 INFO L225 Difference]: With dead ends: 188 [2020-11-07 00:56:36,002 INFO L226 Difference]: Without dead ends: 90 [2020-11-07 00:56:36,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:56:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-07 00:56:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-07 00:56:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-07 00:56:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2020-11-07 00:56:36,109 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 33 [2020-11-07 00:56:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:36,110 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2020-11-07 00:56:36,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:56:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2020-11-07 00:56:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 00:56:36,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:36,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:36,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:56:36,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:36,119 INFO L82 PathProgramCache]: Analyzing trace with hash -892671550, now seen corresponding path program 1 times [2020-11-07 00:56:36,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:36,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33802798] [2020-11-07 00:56:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:36,140 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:36,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33802798] [2020-11-07 00:56:36,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:36,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:56:36,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686110828] [2020-11-07 00:56:36,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:56:36,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:56:36,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:56:36,265 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 5 states. [2020-11-07 00:56:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:36,558 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2020-11-07 00:56:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:56:36,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-11-07 00:56:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:36,563 INFO L225 Difference]: With dead ends: 216 [2020-11-07 00:56:36,563 INFO L226 Difference]: Without dead ends: 144 [2020-11-07 00:56:36,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:56:36,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-07 00:56:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2020-11-07 00:56:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-07 00:56:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-11-07 00:56:36,583 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 45 [2020-11-07 00:56:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:36,583 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-11-07 00:56:36,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:56:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-11-07 00:56:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 00:56:36,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:36,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:36,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:56:36,586 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:36,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:36,587 INFO L82 PathProgramCache]: Analyzing trace with hash 653950565, now seen corresponding path program 1 times [2020-11-07 00:56:36,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:36,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329553632] [2020-11-07 00:56:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:36,594 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:36,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329553632] [2020-11-07 00:56:36,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:36,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:56:36,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698258] [2020-11-07 00:56:36,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:56:36,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:36,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:56:36,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:56:36,703 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 5 states. [2020-11-07 00:56:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:36,926 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2020-11-07 00:56:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:56:36,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-07 00:56:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:36,929 INFO L225 Difference]: With dead ends: 169 [2020-11-07 00:56:36,929 INFO L226 Difference]: Without dead ends: 117 [2020-11-07 00:56:36,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:56:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-07 00:56:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2020-11-07 00:56:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-07 00:56:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-11-07 00:56:36,944 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 47 [2020-11-07 00:56:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:36,945 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-11-07 00:56:36,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:56:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-11-07 00:56:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 00:56:36,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:36,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:36,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:56:36,948 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:36,948 INFO L82 PathProgramCache]: Analyzing trace with hash 678995586, now seen corresponding path program 1 times [2020-11-07 00:56:36,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:36,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154998813] [2020-11-07 00:56:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:36,954 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:56:36,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:56:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:56:37,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:56:37,048 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:56:37,049 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:56:37,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:56:37,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:56:37 BoogieIcfgContainer [2020-11-07 00:56:37,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:56:37,072 INFO L168 Benchmark]: Toolchain (without parser) took 3587.14 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 126.0 MB in the beginning and 96.8 MB in the end (delta: 29.2 MB). Peak memory consumption was 65.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:37,073 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:56:37,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.57 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 103.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:37,074 INFO L168 Benchmark]: Boogie Preprocessor took 134.54 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 132.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:37,075 INFO L168 Benchmark]: RCFGBuilder took 772.84 ms. Allocated memory is still 151.0 MB. Free memory was 132.3 MB in the beginning and 80.9 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:37,076 INFO L168 Benchmark]: TraceAbstraction took 2066.37 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 80.3 MB in the beginning and 96.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:37,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 601.57 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 103.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.54 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 132.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 772.84 ms. Allocated memory is still 151.0 MB. Free memory was 132.3 MB in the beginning and 80.9 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2066.37 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 80.3 MB in the beginning and 96.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 129 SDslu, 288 SDs, 0 SdLazy, 332 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 75 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...