/usr/bin/java -ea -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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/alternating_list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:19:32,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:19:32,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:19:32,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:19:32,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:19:32,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:19:32,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:19:32,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:19:32,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:19:32,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:19:33,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:19:33,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:19:33,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:19:33,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:19:33,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:19:33,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:19:33,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:19:33,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:19:33,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:19:33,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:19:33,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:19:33,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:19:33,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:19:33,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:19:33,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 00:19:33,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 00:19:33,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 00:19:33,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 00:19:33,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 00:19:33,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 00:19:33,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 00:19:33,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 00:19:33,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 00:19:33,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 00:19:33,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 00:19:33,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 00:19:33,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 00:19:33,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 00:19:33,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:19:33,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:19:33,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:19:33,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:19:33,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:19:33,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:19:33,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:19:33,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:19:33,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:19:33,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:19:33,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:19:33,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:19:33,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:19:33,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:19:33,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:19:33,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:19:33,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:19:33,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:19:33,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:19:33,061 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:19:33,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:19:33,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:19:33,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:19:33,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:19:33,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:19:33,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:19:33,062 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:19:33,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:19:33,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:19:33,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:19:33,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:19:33,396 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:19:33,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-2.i [2020-07-18 00:19:33,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3112724e2/5c2e2ea9859c490d9622f1213e354d28/FLAGcf2bc7844 [2020-07-18 00:19:34,003 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:19:34,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-2.i [2020-07-18 00:19:34,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3112724e2/5c2e2ea9859c490d9622f1213e354d28/FLAGcf2bc7844 [2020-07-18 00:19:34,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3112724e2/5c2e2ea9859c490d9622f1213e354d28 [2020-07-18 00:19:34,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:19:34,310 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:19:34,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:19:34,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:19:34,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:19:34,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5c4a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34, skipping insertion in model container [2020-07-18 00:19:34,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:19:34,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:19:34,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:19:34,791 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:19:34,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:19:34,923 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:19:34,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34 WrapperNode [2020-07-18 00:19:34,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:19:34,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:19:34,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:19:34,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:19:34,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (1/1) ... [2020-07-18 00:19:34,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:19:34,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:19:34,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:19:34,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:19:34,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (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 [2020-07-18 00:19:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:19:35,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:19:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-18 00:19:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-18 00:19:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-18 00:19:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-18 00:19:35,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-18 00:19:35,070 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-18 00:19:35,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:19:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:19:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:19:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-18 00:19:35,070 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-18 00:19:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-18 00:19:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-18 00:19:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-18 00:19:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-18 00:19:35,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-18 00:19:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-18 00:19:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-18 00:19:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-18 00:19:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-18 00:19:35,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-18 00:19:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-18 00:19:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-18 00:19:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-18 00:19:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-18 00:19:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-18 00:19:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-18 00:19:35,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-18 00:19:35,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-18 00:19:35,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-18 00:19:35,074 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-18 00:19:35,074 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-18 00:19:35,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-18 00:19:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-18 00:19:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-18 00:19:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-18 00:19:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-18 00:19:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-18 00:19:35,075 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-18 00:19:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-18 00:19:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-18 00:19:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-18 00:19:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-18 00:19:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-18 00:19:35,076 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-18 00:19:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-18 00:19:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-18 00:19:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-18 00:19:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-18 00:19:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-18 00:19:35,077 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-18 00:19:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-18 00:19:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-18 00:19:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-18 00:19:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-18 00:19:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-18 00:19:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-18 00:19:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-18 00:19:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-18 00:19:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-18 00:19:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:19:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-18 00:19:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-18 00:19:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-18 00:19:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-18 00:19:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-18 00:19:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-18 00:19:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-18 00:19:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-18 00:19:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-18 00:19:35,082 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-18 00:19:35,083 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-18 00:19:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-18 00:19:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-18 00:19:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-18 00:19:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-18 00:19:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-18 00:19:35,084 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-18 00:19:35,085 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-18 00:19:35,086 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-18 00:19:35,087 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:19:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:19:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:19:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:19:35,413 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-18 00:19:35,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:19:35,713 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-18 00:19:35,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:19:35 BoogieIcfgContainer [2020-07-18 00:19:35,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:19:35,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:19:35,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:19:35,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:19:35,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:19:34" (1/3) ... [2020-07-18 00:19:35,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690cb479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:19:35, skipping insertion in model container [2020-07-18 00:19:35,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:19:34" (2/3) ... [2020-07-18 00:19:35,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690cb479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:19:35, skipping insertion in model container [2020-07-18 00:19:35,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:19:35" (3/3) ... [2020-07-18 00:19:35,727 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2020-07-18 00:19:35,737 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:19:35,746 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:19:35,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:19:35,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:19:35,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:19:35,786 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:19:35,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:19:35,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:19:35,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:19:35,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:19:35,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:19:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-18 00:19:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 00:19:35,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:35,818 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] [2020-07-18 00:19:35,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:35,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1267394549, now seen corresponding path program 1 times [2020-07-18 00:19:35,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:35,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131192140] [2020-07-18 00:19:35,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:36,115 INFO L280 TraceCheckUtils]: 0: Hoare triple {83#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {76#true} is VALID [2020-07-18 00:19:36,115 INFO L280 TraceCheckUtils]: 1: Hoare triple {76#true} #valid := #valid[0 := 0]; {76#true} is VALID [2020-07-18 00:19:36,116 INFO L280 TraceCheckUtils]: 2: Hoare triple {76#true} assume 0 < #StackHeapBarrier; {76#true} is VALID [2020-07-18 00:19:36,117 INFO L280 TraceCheckUtils]: 3: Hoare triple {76#true} assume true; {76#true} is VALID [2020-07-18 00:19:36,117 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {76#true} {76#true} #156#return; {76#true} is VALID [2020-07-18 00:19:36,121 INFO L263 TraceCheckUtils]: 0: Hoare triple {76#true} call ULTIMATE.init(); {83#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:19:36,121 INFO L280 TraceCheckUtils]: 1: Hoare triple {83#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {76#true} is VALID [2020-07-18 00:19:36,122 INFO L280 TraceCheckUtils]: 2: Hoare triple {76#true} #valid := #valid[0 := 0]; {76#true} is VALID [2020-07-18 00:19:36,122 INFO L280 TraceCheckUtils]: 3: Hoare triple {76#true} assume 0 < #StackHeapBarrier; {76#true} is VALID [2020-07-18 00:19:36,122 INFO L280 TraceCheckUtils]: 4: Hoare triple {76#true} assume true; {76#true} is VALID [2020-07-18 00:19:36,123 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {76#true} {76#true} #156#return; {76#true} is VALID [2020-07-18 00:19:36,123 INFO L263 TraceCheckUtils]: 6: Hoare triple {76#true} call #t~ret12 := main(); {76#true} is VALID [2020-07-18 00:19:36,123 INFO L280 TraceCheckUtils]: 7: Hoare triple {76#true} ~flag~0 := 1; {76#true} is VALID [2020-07-18 00:19:36,124 INFO L280 TraceCheckUtils]: 8: Hoare triple {76#true} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8); srcloc: L522 {76#true} is VALID [2020-07-18 00:19:36,124 INFO L280 TraceCheckUtils]: 9: Hoare triple {76#true} ~a~0.base, ~a~0.offset := #t~malloc2.base, #t~malloc2.offset; {76#true} is VALID [2020-07-18 00:19:36,124 INFO L280 TraceCheckUtils]: 10: Hoare triple {76#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {76#true} is VALID [2020-07-18 00:19:36,125 INFO L280 TraceCheckUtils]: 11: Hoare triple {76#true} havoc ~t~0.base, ~t~0.offset; {76#true} is VALID [2020-07-18 00:19:36,125 INFO L280 TraceCheckUtils]: 12: Hoare triple {76#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {76#true} is VALID [2020-07-18 00:19:36,126 INFO L280 TraceCheckUtils]: 13: Hoare triple {76#true} assume !true; {77#false} is VALID [2020-07-18 00:19:36,127 INFO L280 TraceCheckUtils]: 14: Hoare triple {77#false} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {77#false} is VALID [2020-07-18 00:19:36,127 INFO L280 TraceCheckUtils]: 15: Hoare triple {77#false} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {77#false} is VALID [2020-07-18 00:19:36,127 INFO L280 TraceCheckUtils]: 16: Hoare triple {77#false} ~flag~0 := 1; {77#false} is VALID [2020-07-18 00:19:36,128 INFO L280 TraceCheckUtils]: 17: Hoare triple {77#false} SUMMARY for call #t~mem6 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L542-5 {77#false} is VALID [2020-07-18 00:19:36,128 INFO L280 TraceCheckUtils]: 18: Hoare triple {77#false} assume !!(3 != #t~mem6); {77#false} is VALID [2020-07-18 00:19:36,129 INFO L280 TraceCheckUtils]: 19: Hoare triple {77#false} havoc #t~mem6; {77#false} is VALID [2020-07-18 00:19:36,129 INFO L280 TraceCheckUtils]: 20: Hoare triple {77#false} assume !(0 != ~flag~0); {77#false} is VALID [2020-07-18 00:19:36,129 INFO L280 TraceCheckUtils]: 21: Hoare triple {77#false} ~flag~0 := 1; {77#false} is VALID [2020-07-18 00:19:36,130 INFO L280 TraceCheckUtils]: 22: Hoare triple {77#false} SUMMARY for call #t~mem8 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L549 {77#false} is VALID [2020-07-18 00:19:36,130 INFO L280 TraceCheckUtils]: 23: Hoare triple {77#false} assume 2 != #t~mem8; {77#false} is VALID [2020-07-18 00:19:36,130 INFO L280 TraceCheckUtils]: 24: Hoare triple {77#false} havoc #t~mem8; {77#false} is VALID [2020-07-18 00:19:36,131 INFO L280 TraceCheckUtils]: 25: Hoare triple {77#false} assume !false; {77#false} is VALID [2020-07-18 00:19:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:19:36,137 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:36,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131192140] [2020-07-18 00:19:36,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:19:36,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:19:36,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008516304] [2020-07-18 00:19:36,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-18 00:19:36,151 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:19:36,155 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:19:36,201 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:36,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:19:36,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:19:36,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:19:36,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:19:36,214 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-07-18 00:19:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:36,577 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-07-18 00:19:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:19:36,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-18 00:19:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:19:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:19:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2020-07-18 00:19:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:19:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2020-07-18 00:19:36,606 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 129 transitions. [2020-07-18 00:19:36,770 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 129 edges. 129 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:36,791 INFO L225 Difference]: With dead ends: 112 [2020-07-18 00:19:36,791 INFO L226 Difference]: Without dead ends: 51 [2020-07-18 00:19:36,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:19:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-18 00:19:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-07-18 00:19:36,886 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:19:36,887 INFO L82 GeneralOperation]: Start isEquivalent. First operand 51 states. Second operand 51 states. [2020-07-18 00:19:36,888 INFO L74 IsIncluded]: Start isIncluded. First operand 51 states. Second operand 51 states. [2020-07-18 00:19:36,888 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 51 states. [2020-07-18 00:19:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:36,900 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-07-18 00:19:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-07-18 00:19:36,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:36,902 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:36,903 INFO L74 IsIncluded]: Start isIncluded. First operand 51 states. Second operand 51 states. [2020-07-18 00:19:36,903 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 51 states. [2020-07-18 00:19:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:36,910 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-07-18 00:19:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-07-18 00:19:36,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:36,912 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:36,912 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:19:36,912 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:19:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-18 00:19:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-07-18 00:19:36,933 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 26 [2020-07-18 00:19:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:19:36,933 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-07-18 00:19:36,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:19:36,934 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 51 states and 55 transitions. [2020-07-18 00:19:37,020 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-07-18 00:19:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-18 00:19:37,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:37,023 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] [2020-07-18 00:19:37,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:19:37,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1487998036, now seen corresponding path program 1 times [2020-07-18 00:19:37,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:37,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858697392] [2020-07-18 00:19:37,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:37,155 INFO L280 TraceCheckUtils]: 0: Hoare triple {522#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {514#true} is VALID [2020-07-18 00:19:37,156 INFO L280 TraceCheckUtils]: 1: Hoare triple {514#true} #valid := #valid[0 := 0]; {514#true} is VALID [2020-07-18 00:19:37,156 INFO L280 TraceCheckUtils]: 2: Hoare triple {514#true} assume 0 < #StackHeapBarrier; {514#true} is VALID [2020-07-18 00:19:37,157 INFO L280 TraceCheckUtils]: 3: Hoare triple {514#true} assume true; {514#true} is VALID [2020-07-18 00:19:37,157 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {514#true} {514#true} #156#return; {514#true} is VALID [2020-07-18 00:19:37,158 INFO L263 TraceCheckUtils]: 0: Hoare triple {514#true} call ULTIMATE.init(); {522#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:19:37,159 INFO L280 TraceCheckUtils]: 1: Hoare triple {522#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {514#true} is VALID [2020-07-18 00:19:37,159 INFO L280 TraceCheckUtils]: 2: Hoare triple {514#true} #valid := #valid[0 := 0]; {514#true} is VALID [2020-07-18 00:19:37,160 INFO L280 TraceCheckUtils]: 3: Hoare triple {514#true} assume 0 < #StackHeapBarrier; {514#true} is VALID [2020-07-18 00:19:37,160 INFO L280 TraceCheckUtils]: 4: Hoare triple {514#true} assume true; {514#true} is VALID [2020-07-18 00:19:37,160 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {514#true} {514#true} #156#return; {514#true} is VALID [2020-07-18 00:19:37,161 INFO L263 TraceCheckUtils]: 6: Hoare triple {514#true} call #t~ret12 := main(); {514#true} is VALID [2020-07-18 00:19:37,161 INFO L280 TraceCheckUtils]: 7: Hoare triple {514#true} ~flag~0 := 1; {514#true} is VALID [2020-07-18 00:19:37,161 INFO L280 TraceCheckUtils]: 8: Hoare triple {514#true} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8); srcloc: L522 {514#true} is VALID [2020-07-18 00:19:37,162 INFO L280 TraceCheckUtils]: 9: Hoare triple {514#true} ~a~0.base, ~a~0.offset := #t~malloc2.base, #t~malloc2.offset; {514#true} is VALID [2020-07-18 00:19:37,162 INFO L280 TraceCheckUtils]: 10: Hoare triple {514#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {514#true} is VALID [2020-07-18 00:19:37,163 INFO L280 TraceCheckUtils]: 11: Hoare triple {514#true} havoc ~t~0.base, ~t~0.offset; {514#true} is VALID [2020-07-18 00:19:37,163 INFO L280 TraceCheckUtils]: 12: Hoare triple {514#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {514#true} is VALID [2020-07-18 00:19:37,163 INFO L280 TraceCheckUtils]: 13: Hoare triple {514#true} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {514#true} is VALID [2020-07-18 00:19:37,164 INFO L280 TraceCheckUtils]: 14: Hoare triple {514#true} assume !(0 != #t~nondet3); {514#true} is VALID [2020-07-18 00:19:37,164 INFO L280 TraceCheckUtils]: 15: Hoare triple {514#true} havoc #t~nondet3; {514#true} is VALID [2020-07-18 00:19:37,164 INFO L280 TraceCheckUtils]: 16: Hoare triple {514#true} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {514#true} is VALID [2020-07-18 00:19:37,165 INFO L280 TraceCheckUtils]: 17: Hoare triple {514#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {514#true} is VALID [2020-07-18 00:19:37,166 INFO L280 TraceCheckUtils]: 18: Hoare triple {514#true} ~flag~0 := 1; {521#(= 1 main_~flag~0)} is VALID [2020-07-18 00:19:37,167 INFO L280 TraceCheckUtils]: 19: Hoare triple {521#(= 1 main_~flag~0)} SUMMARY for call #t~mem6 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L542-5 {521#(= 1 main_~flag~0)} is VALID [2020-07-18 00:19:37,167 INFO L280 TraceCheckUtils]: 20: Hoare triple {521#(= 1 main_~flag~0)} assume !!(3 != #t~mem6); {521#(= 1 main_~flag~0)} is VALID [2020-07-18 00:19:37,168 INFO L280 TraceCheckUtils]: 21: Hoare triple {521#(= 1 main_~flag~0)} havoc #t~mem6; {521#(= 1 main_~flag~0)} is VALID [2020-07-18 00:19:37,169 INFO L280 TraceCheckUtils]: 22: Hoare triple {521#(= 1 main_~flag~0)} assume !(0 != ~flag~0); {515#false} is VALID [2020-07-18 00:19:37,170 INFO L280 TraceCheckUtils]: 23: Hoare triple {515#false} ~flag~0 := 1; {515#false} is VALID [2020-07-18 00:19:37,170 INFO L280 TraceCheckUtils]: 24: Hoare triple {515#false} SUMMARY for call #t~mem8 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L549 {515#false} is VALID [2020-07-18 00:19:37,170 INFO L280 TraceCheckUtils]: 25: Hoare triple {515#false} assume 2 != #t~mem8; {515#false} is VALID [2020-07-18 00:19:37,171 INFO L280 TraceCheckUtils]: 26: Hoare triple {515#false} havoc #t~mem8; {515#false} is VALID [2020-07-18 00:19:37,171 INFO L280 TraceCheckUtils]: 27: Hoare triple {515#false} assume !false; {515#false} is VALID [2020-07-18 00:19:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:19:37,176 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:37,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858697392] [2020-07-18 00:19:37,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:19:37,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-18 00:19:37,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352941589] [2020-07-18 00:19:37,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-18 00:19:37,179 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:19:37,179 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-18 00:19:37,214 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:37,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-18 00:19:37,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:19:37,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-18 00:19:37,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-18 00:19:37,227 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 4 states. [2020-07-18 00:19:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:37,579 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-07-18 00:19:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-18 00:19:37,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-18 00:19:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:19:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 00:19:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2020-07-18 00:19:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-18 00:19:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2020-07-18 00:19:37,587 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 126 transitions. [2020-07-18 00:19:37,716 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 126 edges. 126 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:37,720 INFO L225 Difference]: With dead ends: 116 [2020-07-18 00:19:37,720 INFO L226 Difference]: Without dead ends: 78 [2020-07-18 00:19:37,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:19:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-18 00:19:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-07-18 00:19:37,775 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:19:37,776 INFO L82 GeneralOperation]: Start isEquivalent. First operand 78 states. Second operand 69 states. [2020-07-18 00:19:37,776 INFO L74 IsIncluded]: Start isIncluded. First operand 78 states. Second operand 69 states. [2020-07-18 00:19:37,776 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 69 states. [2020-07-18 00:19:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:37,781 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-07-18 00:19:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-07-18 00:19:37,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:37,782 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:37,782 INFO L74 IsIncluded]: Start isIncluded. First operand 69 states. Second operand 78 states. [2020-07-18 00:19:37,782 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 78 states. [2020-07-18 00:19:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:37,786 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-07-18 00:19:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-07-18 00:19:37,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:37,788 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:37,788 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:19:37,788 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:19:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-18 00:19:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2020-07-18 00:19:37,791 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 28 [2020-07-18 00:19:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:19:37,792 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2020-07-18 00:19:37,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-18 00:19:37,792 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 69 states and 74 transitions. [2020-07-18 00:19:37,870 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 74 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2020-07-18 00:19:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-18 00:19:37,872 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:37,872 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] [2020-07-18 00:19:37,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:19:37,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1813416041, now seen corresponding path program 1 times [2020-07-18 00:19:37,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:37,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136946155] [2020-07-18 00:19:37,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:19:37,990 INFO L280 TraceCheckUtils]: 0: Hoare triple {1064#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1053#true} is VALID [2020-07-18 00:19:37,990 INFO L280 TraceCheckUtils]: 1: Hoare triple {1053#true} #valid := #valid[0 := 0]; {1053#true} is VALID [2020-07-18 00:19:37,991 INFO L280 TraceCheckUtils]: 2: Hoare triple {1053#true} assume 0 < #StackHeapBarrier; {1053#true} is VALID [2020-07-18 00:19:37,991 INFO L280 TraceCheckUtils]: 3: Hoare triple {1053#true} assume true; {1053#true} is VALID [2020-07-18 00:19:37,991 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1053#true} {1053#true} #156#return; {1053#true} is VALID [2020-07-18 00:19:37,992 INFO L263 TraceCheckUtils]: 0: Hoare triple {1053#true} call ULTIMATE.init(); {1064#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:19:37,993 INFO L280 TraceCheckUtils]: 1: Hoare triple {1064#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {1053#true} is VALID [2020-07-18 00:19:37,993 INFO L280 TraceCheckUtils]: 2: Hoare triple {1053#true} #valid := #valid[0 := 0]; {1053#true} is VALID [2020-07-18 00:19:37,993 INFO L280 TraceCheckUtils]: 3: Hoare triple {1053#true} assume 0 < #StackHeapBarrier; {1053#true} is VALID [2020-07-18 00:19:37,994 INFO L280 TraceCheckUtils]: 4: Hoare triple {1053#true} assume true; {1053#true} is VALID [2020-07-18 00:19:37,994 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {1053#true} {1053#true} #156#return; {1053#true} is VALID [2020-07-18 00:19:37,994 INFO L263 TraceCheckUtils]: 6: Hoare triple {1053#true} call #t~ret12 := main(); {1053#true} is VALID [2020-07-18 00:19:37,994 INFO L280 TraceCheckUtils]: 7: Hoare triple {1053#true} ~flag~0 := 1; {1053#true} is VALID [2020-07-18 00:19:37,995 INFO L280 TraceCheckUtils]: 8: Hoare triple {1053#true} SUMMARY for call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(8); srcloc: L522 {1053#true} is VALID [2020-07-18 00:19:37,995 INFO L280 TraceCheckUtils]: 9: Hoare triple {1053#true} ~a~0.base, ~a~0.offset := #t~malloc2.base, #t~malloc2.offset; {1053#true} is VALID [2020-07-18 00:19:37,995 INFO L280 TraceCheckUtils]: 10: Hoare triple {1053#true} assume !(~a~0.base == 0 && ~a~0.offset == 0); {1053#true} is VALID [2020-07-18 00:19:37,996 INFO L280 TraceCheckUtils]: 11: Hoare triple {1053#true} havoc ~t~0.base, ~t~0.offset; {1053#true} is VALID [2020-07-18 00:19:37,996 INFO L280 TraceCheckUtils]: 12: Hoare triple {1053#true} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:37,997 INFO L280 TraceCheckUtils]: 13: Hoare triple {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647; {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:37,998 INFO L280 TraceCheckUtils]: 14: Hoare triple {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} assume !(0 != #t~nondet3); {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:37,999 INFO L280 TraceCheckUtils]: 15: Hoare triple {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} havoc #t~nondet3; {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} is VALID [2020-07-18 00:19:38,000 INFO L280 TraceCheckUtils]: 16: Hoare triple {1060#(and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset))} SUMMARY for call write~int(3, ~p~0.base, ~p~0.offset, 4); srcloc: L526-6 {1061#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} is VALID [2020-07-18 00:19:38,006 INFO L280 TraceCheckUtils]: 17: Hoare triple {1061#(= 3 (select (select |#memory_int| main_~a~0.base) main_~a~0.offset))} ~p~0.base, ~p~0.offset := ~a~0.base, ~a~0.offset; {1062#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:38,007 INFO L280 TraceCheckUtils]: 18: Hoare triple {1062#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} ~flag~0 := 1; {1062#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} is VALID [2020-07-18 00:19:38,008 INFO L280 TraceCheckUtils]: 19: Hoare triple {1062#(= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))} SUMMARY for call #t~mem6 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L542-5 {1063#(= 3 |main_#t~mem6|)} is VALID [2020-07-18 00:19:38,008 INFO L280 TraceCheckUtils]: 20: Hoare triple {1063#(= 3 |main_#t~mem6|)} assume !!(3 != #t~mem6); {1054#false} is VALID [2020-07-18 00:19:38,009 INFO L280 TraceCheckUtils]: 21: Hoare triple {1054#false} havoc #t~mem6; {1054#false} is VALID [2020-07-18 00:19:38,009 INFO L280 TraceCheckUtils]: 22: Hoare triple {1054#false} assume 0 != ~flag~0; {1054#false} is VALID [2020-07-18 00:19:38,010 INFO L280 TraceCheckUtils]: 23: Hoare triple {1054#false} ~flag~0 := 0; {1054#false} is VALID [2020-07-18 00:19:38,010 INFO L280 TraceCheckUtils]: 24: Hoare triple {1054#false} SUMMARY for call #t~mem7 := read~int(~p~0.base, ~p~0.offset, 4); srcloc: L545 {1054#false} is VALID [2020-07-18 00:19:38,010 INFO L280 TraceCheckUtils]: 25: Hoare triple {1054#false} assume 1 != #t~mem7; {1054#false} is VALID [2020-07-18 00:19:38,010 INFO L280 TraceCheckUtils]: 26: Hoare triple {1054#false} havoc #t~mem7; {1054#false} is VALID [2020-07-18 00:19:38,011 INFO L280 TraceCheckUtils]: 27: Hoare triple {1054#false} assume !false; {1054#false} is VALID [2020-07-18 00:19:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:19:38,013 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:38,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136946155] [2020-07-18 00:19:38,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:19:38,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-18 00:19:38,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941004563] [2020-07-18 00:19:38,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-18 00:19:38,015 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:19:38,015 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-18 00:19:38,053 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:38,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-18 00:19:38,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:19:38,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-18 00:19:38,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-18 00:19:38,054 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 7 states. [2020-07-18 00:19:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:38,671 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2020-07-18 00:19:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-18 00:19:38,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-18 00:19:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:19:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:19:38,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2020-07-18 00:19:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-18 00:19:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2020-07-18 00:19:38,678 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 108 transitions. [2020-07-18 00:19:38,792 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 108 edges. 108 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:38,795 INFO L225 Difference]: With dead ends: 126 [2020-07-18 00:19:38,795 INFO L226 Difference]: Without dead ends: 94 [2020-07-18 00:19:38,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:19:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-18 00:19:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2020-07-18 00:19:38,872 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:19:38,872 INFO L82 GeneralOperation]: Start isEquivalent. First operand 94 states. Second operand 71 states. [2020-07-18 00:19:38,872 INFO L74 IsIncluded]: Start isIncluded. First operand 94 states. Second operand 71 states. [2020-07-18 00:19:38,873 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 71 states. [2020-07-18 00:19:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:38,877 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-07-18 00:19:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-07-18 00:19:38,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:38,878 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:38,878 INFO L74 IsIncluded]: Start isIncluded. First operand 71 states. Second operand 94 states. [2020-07-18 00:19:38,878 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 94 states. [2020-07-18 00:19:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:19:38,882 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-07-18 00:19:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-07-18 00:19:38,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:19:38,883 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:19:38,883 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:19:38,884 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:19:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-18 00:19:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-07-18 00:19:38,887 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 28 [2020-07-18 00:19:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:19:38,887 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-07-18 00:19:38,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-18 00:19:38,887 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 71 states and 76 transitions. [2020-07-18 00:19:38,960 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 76 edges. 76 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:19:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-07-18 00:19:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-18 00:19:38,962 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:19:38,963 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:19:38,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:19:38,963 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:19:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:19:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -223654578, now seen corresponding path program 1 times [2020-07-18 00:19:38,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:19:38,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115477680] [2020-07-18 00:19:38,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:19:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:19:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 00:19:39,086 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:19:39,086 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 00:19:39,087 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:19:39,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-18 00:19:39,102 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: myexitENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: __bswap_32ENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: __bswap_64ENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: __uint16_identityENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: __uint64_identityENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:19:39,103 WARN L170 areAnnotationChecker]: __uint32_identityENTRY has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L518 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L164 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L169 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L174 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L184 has no Hoare annotation [2020-07-18 00:19:39,104 WARN L170 areAnnotationChecker]: L522 has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: L179 has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: L164-1 has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: L169-1 has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: __uint16_identityFINAL has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: __uint64_identityFINAL has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: L522-1 has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: __uint32_identityFINAL has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:19:39,105 WARN L170 areAnnotationChecker]: __bswap_32FINAL has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: __bswap_64FINAL has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L523 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L523 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L523-1 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L523-1 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L523-3 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L525 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L526-5 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L526-5 has no Hoare annotation [2020-07-18 00:19:39,106 WARN L170 areAnnotationChecker]: L526-6 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L526-1 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L526-1 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L539 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L526-2 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L526-4 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L541 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L527 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L527 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L542-5 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L542-5 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L528 has no Hoare annotation [2020-07-18 00:19:39,107 WARN L170 areAnnotationChecker]: L531 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L542-6 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L542-1 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L542-1 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L528-1 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L531-1 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L558-1 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L558-1 has no Hoare annotation [2020-07-18 00:19:39,108 WARN L170 areAnnotationChecker]: L542-2 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L542-4 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L527-2 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L555-5 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L555-1 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L555-1 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L543 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L543 has no Hoare annotation [2020-07-18 00:19:39,109 WARN L170 areAnnotationChecker]: L534 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L560 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L555-2 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L555-4 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L544 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L548 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L535 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: L535 has no Hoare annotation [2020-07-18 00:19:39,110 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L556 has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L545 has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L549 has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L535-1 has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L535-1 has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L535-3 has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:19:39,111 WARN L170 areAnnotationChecker]: L557 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L545-1 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L545-1 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L549-1 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L549-1 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L536 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L557-1 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L545-2 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L545-3 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L549-2 has no Hoare annotation [2020-07-18 00:19:39,112 WARN L170 areAnnotationChecker]: L549-3 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L537 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L557-2 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L550 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L550 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L543-2 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L537-1 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L558 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L563 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L552 has no Hoare annotation [2020-07-18 00:19:39,113 WARN L170 areAnnotationChecker]: L552-1 has no Hoare annotation [2020-07-18 00:19:39,114 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:19:39,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:19:39 BoogieIcfgContainer [2020-07-18 00:19:39,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:19:39,120 INFO L168 Benchmark]: Toolchain (without parser) took 4810.70 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 103.0 MB in the beginning and 215.9 MB in the end (delta: -112.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:19:39,121 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:19:39,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.96 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:19:39,123 INFO L168 Benchmark]: Boogie Preprocessor took 68.27 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 166.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:19:39,123 INFO L168 Benchmark]: RCFGBuilder took 723.84 ms. Allocated memory is still 203.4 MB. Free memory was 166.0 MB in the beginning and 105.2 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:19:39,124 INFO L168 Benchmark]: TraceAbstraction took 3398.42 ms. Allocated memory was 203.4 MB in the beginning and 284.7 MB in the end (delta: 81.3 MB). Free memory was 104.5 MB in the beginning and 215.9 MB in the end (delta: -111.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 00:19:39,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 612.96 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.6 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.27 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 166.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 723.84 ms. Allocated memory is still 203.4 MB. Free memory was 166.0 MB in the beginning and 105.2 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3398.42 ms. Allocated memory was 203.4 MB in the beginning and 284.7 MB in the end (delta: 81.3 MB). Free memory was 104.5 MB in the beginning and 215.9 MB in the end (delta: -111.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List p = a; [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 2 [L529] flag = 0 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] flag = 1 [L542] EXPR p->h [L542] COND TRUE p->h != 3 [L543] COND TRUE \read(flag) [L544] flag = 0 [L545] EXPR p->h [L545] COND TRUE p->h != 1 [L562] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 187 SDtfs, 64 SDslu, 206 SDs, 0 SdLazy, 251 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 32 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...