/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-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:04:39,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:04:39,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:04:39,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:04:39,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:04:39,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:04:39,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:04:39,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:04:39,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:04:39,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:04:39,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:04:39,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:04:39,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:04:39,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:04:39,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:04:39,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:04:39,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:04:39,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:04:39,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:04:39,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:04:39,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:04:39,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:04:39,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:04:39,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:04:39,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:04:39,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:04:39,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:04:39,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:04:39,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:04:39,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:04:39,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:04:39,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:04:39,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:04:39,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:04:39,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:04:39,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:04:39,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:04:39,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:04:39,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:04:39,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:04:39,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:04:39,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:04:39,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:04:39,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:04:40,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:04:40,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:04:40,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:04:40,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:04:40,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:04:40,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:04:40,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:04:40,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:04:40,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:04:40,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:04:40,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:04:40,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:04:40,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:04:40,006 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:04:40,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:04:40,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:04:40,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:04:40,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:04:40,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:04:40,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:04:40,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:04:40,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:04:40,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:04:40,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:04:40,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:04:40,458 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:04:40,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2021-02-23 18:04:40,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3dbd9cd/8ba6ff644d864bdabeb50062ab65002e/FLAG4c0dc9b19 [2021-02-23 18:04:41,235 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:04:41,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2021-02-23 18:04:41,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3dbd9cd/8ba6ff644d864bdabeb50062ab65002e/FLAG4c0dc9b19 [2021-02-23 18:04:41,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3dbd9cd/8ba6ff644d864bdabeb50062ab65002e [2021-02-23 18:04:41,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:04:41,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:04:41,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:41,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:04:41,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:04:41,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:41" (1/1) ... [2021-02-23 18:04:41,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba94963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:41, skipping insertion in model container [2021-02-23 18:04:41,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:41" (1/1) ... [2021-02-23 18:04:41,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:04:41,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:04:41,883 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2021-02-23 18:04:41,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:41,898 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:04:41,949 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2021-02-23 18:04:41,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:42,024 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:04:42,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42 WrapperNode [2021-02-23 18:04:42,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:42,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:04:42,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:04:42,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:04:42,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (1/1) ... [2021-02-23 18:04:42,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:04:42,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:04:42,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:04:42,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:04:42,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (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 [2021-02-23 18:04:42,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:04:42,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:04:42,257 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:04:42,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:04:42,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:04:42,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 18:04:42,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 18:04:42,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 18:04:42,258 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 18:04:42,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:04:42,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:04:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:04:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:04:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:04:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:04:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:04:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:04:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:04:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:04:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:04:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:04:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:04:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:04:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:04:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:04:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:04:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:04:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:04:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:04:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:04:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:04:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:04:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:04:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:04:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:04:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 18:04:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 18:04:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 18:04:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:04:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:04:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:04:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:04:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:04:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:04:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:04:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:04:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:04:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:04:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:04:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:04:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:04:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:04:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:04:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:04:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:04:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:04:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:04:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:04:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:04:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:04:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:04:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:04:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:04:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:04:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:04:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:04:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:04:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:04:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:04:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:04:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:04:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:04:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:04:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:04:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:04:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:04:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:04:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:04:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:04:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:04:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:04:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:04:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:04:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:04:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:04:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:04:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:04:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:04:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:04:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:04:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:04:42,642 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 18:04:42,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:04:42,831 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:04:42,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:42 BoogieIcfgContainer [2021-02-23 18:04:42,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:04:42,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:04:42,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:04:42,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:04:42,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:04:41" (1/3) ... [2021-02-23 18:04:42,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc94e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:42, skipping insertion in model container [2021-02-23 18:04:42,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:42" (2/3) ... [2021-02-23 18:04:42,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc94e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:42, skipping insertion in model container [2021-02-23 18:04:42,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:42" (3/3) ... [2021-02-23 18:04:42,843 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2021-02-23 18:04:42,850 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:04:42,855 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:04:42,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:04:42,901 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:04:42,916 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:04:42,916 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:04:42,916 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:04:42,916 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:04:42,916 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:04:42,916 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:04:42,917 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:04:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2021-02-23 18:04:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 18:04:42,946 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:42,947 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] [2021-02-23 18:04:42,948 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:42,955 INFO L82 PathProgramCache]: Analyzing trace with hash -644551900, now seen corresponding path program 1 times [2021-02-23 18:04:42,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:42,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470178997] [2021-02-23 18:04:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:43,063 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:43,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:43,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:43,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:04:43,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470178997] [2021-02-23 18:04:43,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:43,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:04:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709103953] [2021-02-23 18:04:43,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:04:43,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:04:43,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:04:43,340 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2021-02-23 18:04:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:43,487 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2021-02-23 18:04:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:04:43,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-02-23 18:04:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:43,499 INFO L225 Difference]: With dead ends: 94 [2021-02-23 18:04:43,499 INFO L226 Difference]: Without dead ends: 57 [2021-02-23 18:04:43,503 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 [2021-02-23 18:04:43,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-23 18:04:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-23 18:04:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-23 18:04:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-02-23 18:04:43,557 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 30 [2021-02-23 18:04:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:43,558 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-02-23 18:04:43,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:04:43,558 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-02-23 18:04:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 18:04:43,560 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:43,560 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] [2021-02-23 18:04:43,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:04:43,561 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:43,562 INFO L82 PathProgramCache]: Analyzing trace with hash 338946844, now seen corresponding path program 1 times [2021-02-23 18:04:43,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:43,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941432816] [2021-02-23 18:04:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:43,568 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:43,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:43,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:43,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:43,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:43,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:43,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:43,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:43,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:04:43,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941432816] [2021-02-23 18:04:43,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:43,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:04:43,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771505866] [2021-02-23 18:04:43,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:04:43,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:43,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:04:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:04:43,778 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 7 states. [2021-02-23 18:04:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:44,096 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2021-02-23 18:04:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:04:44,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-02-23 18:04:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:44,099 INFO L225 Difference]: With dead ends: 126 [2021-02-23 18:04:44,100 INFO L226 Difference]: Without dead ends: 119 [2021-02-23 18:04:44,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-23 18:04:44,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 67. [2021-02-23 18:04:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 18:04:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2021-02-23 18:04:44,116 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 34 [2021-02-23 18:04:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:44,117 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2021-02-23 18:04:44,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:04:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2021-02-23 18:04:44,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:04:44,119 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:44,119 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] [2021-02-23 18:04:44,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:04:44,119 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:44,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:44,120 INFO L82 PathProgramCache]: Analyzing trace with hash -618579532, now seen corresponding path program 1 times [2021-02-23 18:04:44,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:44,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140208405] [2021-02-23 18:04:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:44,147 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:44,151 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:44,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:44,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:44,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:44,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:44,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:44,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:44,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:44,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:04:44,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140208405] [2021-02-23 18:04:44,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:44,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:04:44,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334296055] [2021-02-23 18:04:44,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:04:44,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:44,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:04:44,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:04:44,317 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 7 states. [2021-02-23 18:04:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:44,552 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-02-23 18:04:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:04:44,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-23 18:04:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:44,554 INFO L225 Difference]: With dead ends: 121 [2021-02-23 18:04:44,554 INFO L226 Difference]: Without dead ends: 107 [2021-02-23 18:04:44,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-23 18:04:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 65. [2021-02-23 18:04:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-23 18:04:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2021-02-23 18:04:44,566 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 40 [2021-02-23 18:04:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:44,566 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2021-02-23 18:04:44,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:04:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2021-02-23 18:04:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:04:44,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:44,568 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] [2021-02-23 18:04:44,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:04:44,569 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1817495092, now seen corresponding path program 1 times [2021-02-23 18:04:44,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:44,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455416644] [2021-02-23 18:04:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:44,574 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:44,578 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:44,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:44,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:44,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:44,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:04:44,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:44,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:44,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:44,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:04:44,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455416644] [2021-02-23 18:04:44,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:44,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:04:44,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890848674] [2021-02-23 18:04:44,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:04:44,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:04:44,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:04:44,737 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 7 states. [2021-02-23 18:04:44,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:44,932 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2021-02-23 18:04:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:04:44,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2021-02-23 18:04:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:44,933 INFO L225 Difference]: With dead ends: 104 [2021-02-23 18:04:44,934 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 18:04:44,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:04:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 18:04:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 59. [2021-02-23 18:04:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-23 18:04:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-02-23 18:04:44,942 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 40 [2021-02-23 18:04:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:44,943 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-02-23 18:04:44,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:04:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-02-23 18:04:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 18:04:44,944 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:44,944 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, 1, 1, 1, 1, 1] [2021-02-23 18:04:44,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:04:44,945 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:44,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2124694086, now seen corresponding path program 1 times [2021-02-23 18:04:44,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:44,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326443269] [2021-02-23 18:04:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:44,971 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:44,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:45,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:45,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:45,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:45,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:04:45,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:45,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:45,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:45,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:45,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:04:45,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326443269] [2021-02-23 18:04:45,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:45,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:04:45,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433039339] [2021-02-23 18:04:45,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:04:45,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:45,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:04:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:04:45,046 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 4 states. [2021-02-23 18:04:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:45,146 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2021-02-23 18:04:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:04:45,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-23 18:04:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:45,148 INFO L225 Difference]: With dead ends: 115 [2021-02-23 18:04:45,148 INFO L226 Difference]: Without dead ends: 79 [2021-02-23 18:04:45,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:04:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-23 18:04:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2021-02-23 18:04:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 18:04:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-02-23 18:04:45,158 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 46 [2021-02-23 18:04:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:45,158 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-02-23 18:04:45,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:04:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-02-23 18:04:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 18:04:45,160 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:45,160 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, 1, 1, 1, 1, 1] [2021-02-23 18:04:45,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:04:45,161 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:45,161 INFO L82 PathProgramCache]: Analyzing trace with hash -512547002, now seen corresponding path program 1 times [2021-02-23 18:04:45,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:45,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886225249] [2021-02-23 18:04:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:45,183 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:04:45,186 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:04:45,206 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:04:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:04:45,222 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:04:45,273 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:04:45,273 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:04:45,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:04:45,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:04:45 BoogieIcfgContainer [2021-02-23 18:04:45,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:04:45,298 INFO L168 Benchmark]: Toolchain (without parser) took 3772.27 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 107.6 MB in the beginning and 81.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 57.6 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:45,299 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:04:45,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.02 ms. Allocated memory is still 152.0 MB. Free memory was 106.5 MB in the beginning and 122.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:45,306 INFO L168 Benchmark]: Boogie Preprocessor took 125.34 ms. Allocated memory is still 152.0 MB. Free memory was 122.6 MB in the beginning and 133.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:45,310 INFO L168 Benchmark]: RCFGBuilder took 679.73 ms. Allocated memory is still 152.0 MB. Free memory was 133.5 MB in the beginning and 88.8 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:45,311 INFO L168 Benchmark]: TraceAbstraction took 2461.35 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 88.5 MB in the beginning and 81.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:04:45,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 152.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 486.02 ms. Allocated memory is still 152.0 MB. Free memory was 106.5 MB in the beginning and 122.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 125.34 ms. Allocated memory is still 152.0 MB. Free memory was 122.6 MB in the beginning and 133.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.73 ms. Allocated memory is still 152.0 MB. Free memory was 133.5 MB in the beginning and 88.8 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2461.35 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 88.5 MB in the beginning and 81.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) [L536] p = a [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND FALSE !(\read(flag)) [L541] p->h = 2 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a [L550] COND FALSE !(\read(flag)) [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 288 SDtfs, 238 SDslu, 531 SDs, 0 SdLazy, 598 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 126 StatesRemovedByMinimization, 4 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...