/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:42:01,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:42:01,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:42:01,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:42:01,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:42:01,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:42:01,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:42:01,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:42:01,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:42:01,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:42:01,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:42:01,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:42:01,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:42:01,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:42:01,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:42:01,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:42:01,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:42:01,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:42:01,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:42:01,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:42:01,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:42:01,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:42:01,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:42:01,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:42:01,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:42:01,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:42:01,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:42:02,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:42:02,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:42:02,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:42:02,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:42:02,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:42:02,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:42:02,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:42:02,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:42:02,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:42:02,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:42:02,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:42:02,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:42:02,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:42:02,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:42:02,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:42:02,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:42:02,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:42:02,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:42:02,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:42:02,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:42:02,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:42:02,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:42:02,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:42:02,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:42:02,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:42:02,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:42:02,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:42:02,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:42:02,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:42:02,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:42:02,058 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:42:02,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:42:02,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:42:02,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:42:02,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:42:02,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:42:02,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:42:02,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:42:02,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:42:02,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:42:02,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:42:02,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:42:02,501 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:42:02,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i [2021-02-21 20:42:02,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87684a58/ec5312a296724d62a74f75e0fbb02f80/FLAG38e08d1c9 [2021-02-21 20:42:03,333 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:42:03,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/simple-ext.i [2021-02-21 20:42:03,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87684a58/ec5312a296724d62a74f75e0fbb02f80/FLAG38e08d1c9 [2021-02-21 20:42:03,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87684a58/ec5312a296724d62a74f75e0fbb02f80 [2021-02-21 20:42:03,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:42:03,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:42:03,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:42:03,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:42:03,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:42:03,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:42:03" (1/1) ... [2021-02-21 20:42:03,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdd88ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:03, skipping insertion in model container [2021-02-21 20:42:03,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:42:03" (1/1) ... [2021-02-21 20:42:03,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:42:03,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:42:04,055 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-ext-properties/simple-ext.i[23272,23285] [2021-02-21 20:42:04,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:42:04,083 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:42:04,130 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-ext-properties/simple-ext.i[23272,23285] [2021-02-21 20:42:04,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:42:04,204 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:42:04,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04 WrapperNode [2021-02-21 20:42:04,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:42:04,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:42:04,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:42:04,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:42:04,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (1/1) ... [2021-02-21 20:42:04,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:42:04,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:42:04,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:42:04,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:42:04,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (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 [2021-02-21 20:42:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:42:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:42:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:42:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 20:42:04,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 20:42:04,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 20:42:04,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 20:42:04,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 20:42:04,488 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 20:42:04,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:42:04,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:42:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:42:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:42:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:42:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:42:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:42:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:42:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:42:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:42:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:42:04,495 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:42:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:42:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:42:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:42:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:42:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:42:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:42:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:42:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:42:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:42:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:42:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:42:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:42:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 20:42:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 20:42:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 20:42:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 20:42:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 20:42:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:42:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:42:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:42:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:42:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:42:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:42:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:42:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:42:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:42:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:42:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:42:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:42:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:42:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:42:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:42:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:42:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:42:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:42:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:42:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:42:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:42:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:42:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:42:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:42:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:42:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:42:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:42:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:42:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:42:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:42:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:42:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:42:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:42:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:42:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:42:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:42:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:42:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:42:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:42:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:42:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:42:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:42:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:42:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:42:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:42:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:42:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:42:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:42:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:42:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:42:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:42:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:42:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:42:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:42:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:42:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:42:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:42:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:42:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:42:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:42:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:42:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:42:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:42:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:42:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:42:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:42:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:42:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 20:42:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:42:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:42:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:42:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:42:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:42:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:42:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:42:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:42:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:42:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:42:05,295 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 20:42:05,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:42:05,587 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 20:42:05,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:42:05 BoogieIcfgContainer [2021-02-21 20:42:05,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:42:05,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:42:05,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:42:05,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:42:05,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:42:03" (1/3) ... [2021-02-21 20:42:05,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d14f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:42:05, skipping insertion in model container [2021-02-21 20:42:05,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:42:04" (2/3) ... [2021-02-21 20:42:05,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d14f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:42:05, skipping insertion in model container [2021-02-21 20:42:05,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:42:05" (3/3) ... [2021-02-21 20:42:05,601 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2021-02-21 20:42:05,611 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:42:05,617 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:42:05,639 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:42:05,665 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:42:05,665 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:42:05,666 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:42:05,666 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:42:05,666 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:42:05,666 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:42:05,666 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:42:05,666 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:42:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-21 20:42:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 20:42:05,696 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:05,697 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] [2021-02-21 20:42:05,697 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:05,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1359905460, now seen corresponding path program 1 times [2021-02-21 20:42:05,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:05,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720882310] [2021-02-21 20:42:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:05,817 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:05,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:05,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:06,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:06,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:06,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720882310] [2021-02-21 20:42:06,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:06,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:42:06,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223616939] [2021-02-21 20:42:06,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:42:06,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:06,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:42:06,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:42:06,072 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-21 20:42:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:06,481 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2021-02-21 20:42:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:42:06,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-02-21 20:42:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:06,496 INFO L225 Difference]: With dead ends: 100 [2021-02-21 20:42:06,497 INFO L226 Difference]: Without dead ends: 54 [2021-02-21 20:42:06,501 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 [2021-02-21 20:42:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-21 20:42:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-02-21 20:42:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-21 20:42:06,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-02-21 20:42:06,566 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 27 [2021-02-21 20:42:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:06,568 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-02-21 20:42:06,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:42:06,568 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-02-21 20:42:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 20:42:06,570 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:06,570 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] [2021-02-21 20:42:06,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:42:06,571 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1350381, now seen corresponding path program 1 times [2021-02-21 20:42:06,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:06,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025318767] [2021-02-21 20:42:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:06,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:06,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:06,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:06,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:06,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:06,770 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-21 20:42:06,771 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-21 20:42:06,782 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 20:42:06,783 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 20:42:06,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:06,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:06,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:06,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:06,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025318767] [2021-02-21 20:42:06,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:06,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:42:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789640940] [2021-02-21 20:42:06,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:42:06,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:42:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:42:06,845 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 5 states. [2021-02-21 20:42:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:06,987 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2021-02-21 20:42:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:42:06,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-02-21 20:42:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:06,989 INFO L225 Difference]: With dead ends: 126 [2021-02-21 20:42:06,989 INFO L226 Difference]: Without dead ends: 89 [2021-02-21 20:42:06,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:42:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-21 20:42:07,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2021-02-21 20:42:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 20:42:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-02-21 20:42:07,003 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 31 [2021-02-21 20:42:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:07,004 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-02-21 20:42:07,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:42:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-02-21 20:42:07,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 20:42:07,005 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:07,006 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] [2021-02-21 20:42:07,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:42:07,006 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:07,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2146170512, now seen corresponding path program 1 times [2021-02-21 20:42:07,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:07,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916246934] [2021-02-21 20:42:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:07,012 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:42:07,043 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:42:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:42:07,071 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:42:07,138 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:42:07,139 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:42:07,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:42:07,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:42:07 BoogieIcfgContainer [2021-02-21 20:42:07,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:42:07,172 INFO L168 Benchmark]: Toolchain (without parser) took 3548.33 ms. Allocated memory was 152.0 MB in the beginning and 190.8 MB in the end (delta: 38.8 MB). Free memory was 127.6 MB in the beginning and 115.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:07,173 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:42:07,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.09 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 104.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:07,175 INFO L168 Benchmark]: Boogie Preprocessor took 111.28 ms. Allocated memory is still 152.0 MB. Free memory was 104.5 MB in the beginning and 101.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:07,175 INFO L168 Benchmark]: RCFGBuilder took 1271.79 ms. Allocated memory is still 152.0 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:07,176 INFO L168 Benchmark]: TraceAbstraction took 1578.71 ms. Allocated memory was 152.0 MB in the beginning and 190.8 MB in the end (delta: 38.8 MB). Free memory was 92.0 MB in the beginning and 115.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:07,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 561.09 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 104.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.28 ms. Allocated memory is still 152.0 MB. Free memory was 104.5 MB in the beginning and 101.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1271.79 ms. Allocated memory is still 152.0 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1578.71 ms. Allocated memory was 152.0 MB in the beginning and 190.8 MB in the end (delta: 38.8 MB). Free memory was 92.0 MB in the beginning and 115.5 MB in the end (delta: -23.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 551]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] int i = 0; [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i [L546] p->n = 0 [L547] p = a [L548] i = 0 [L549] COND TRUE p!=0 [L550] EXPR p->h [L550] COND TRUE p->h != 1 [L551] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 38 SDslu, 96 SDs, 0 SdLazy, 142 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 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...