/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 0.2.0-b8ad66e [2020-10-23 20:33:04,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:33:04,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:33:04,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:33:04,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:33:04,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:33:04,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:33:04,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:33:04,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:33:04,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:33:04,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:33:04,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:33:04,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:33:04,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:33:04,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:33:04,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:33:04,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:33:04,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:33:04,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:33:04,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:33:04,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:33:04,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:33:04,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:33:04,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:33:04,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:33:04,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:33:04,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:33:04,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:33:04,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:33:04,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:33:04,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:33:04,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:33:04,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:33:04,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:33:04,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:33:04,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:33:04,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:33:04,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:33:04,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:33:04,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:33:04,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:33:04,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:33:04,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:33:04,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:33:04,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:33:04,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:33:04,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:33:04,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:33:04,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:33:04,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:33:04,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:33:04,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:33:04,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:33:04,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:33:04,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:33:04,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:33:04,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:33:04,519 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:33:04,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:33:04,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:33:04,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:04,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:33:04,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:33:04,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:33:04,521 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:33:04,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:33:04,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:33:04,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:33:04,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:33:04,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:33:04,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-23 20:33:05,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4390e16bb/35ddb9144c4c40bfb778426f7a639d0a/FLAG9a3424693 [2020-10-23 20:33:05,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:33:05,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-23 20:33:05,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4390e16bb/35ddb9144c4c40bfb778426f7a639d0a/FLAG9a3424693 [2020-10-23 20:33:06,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4390e16bb/35ddb9144c4c40bfb778426f7a639d0a [2020-10-23 20:33:06,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:33:06,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:33:06,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:06,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:33:06,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:33:06,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a02738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06, skipping insertion in model container [2020-10-23 20:33:06,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:33:06,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:33:06,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:06,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:33:06,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:06,731 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:33:06,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06 WrapperNode [2020-10-23 20:33:06,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:06,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:33:06,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:33:06,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:33:06,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... [2020-10-23 20:33:06,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:33:06,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:33:06,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:33:06,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:33:06,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:33:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:33:06,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:33:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 20:33:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 20:33:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-23 20:33:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-23 20:33:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-23 20:33:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-23 20:33:06,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:33:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:33:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:33:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:33:06,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:33:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:33:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:33:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:33:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:33:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:33:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:33:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:33:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:33:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:33:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:33:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:33:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:33:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:33:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:33:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:33:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:33:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:33:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:33:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:33:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 20:33:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 20:33:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-23 20:33:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-23 20:33:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-23 20:33:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:33:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:33:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:33:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:33:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:33:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:33:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:33:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:33:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:33:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:33:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:33:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:33:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:33:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:33:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:33:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:33:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:33:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:33:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:33:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:33:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:33:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:33:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:33:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:33:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:33:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:33:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:33:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:33:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:33:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:33:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:33:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:33:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:33:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:33:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:33:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:33:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:33:06,917 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:33:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:33:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:33:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:33:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:33:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:33:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:33:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:33:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:33:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:33:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:33:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:33:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:33:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:33:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:33:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:33:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:33:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:33:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:33:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:33:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:33:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:33:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:33:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:33:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:33:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:33:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:33:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:33:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:33:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:33:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:33:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:33:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:33:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:33:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:33:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:33:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:33:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-23 20:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:33:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:33:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:33:07,260 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-23 20:33:07,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:33:07,463 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 20:33:07,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:07 BoogieIcfgContainer [2020-10-23 20:33:07,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:33:07,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:33:07,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:33:07,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:33:07,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:33:06" (1/3) ... [2020-10-23 20:33:07,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:07, skipping insertion in model container [2020-10-23 20:33:07,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:06" (2/3) ... [2020-10-23 20:33:07,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:07, skipping insertion in model container [2020-10-23 20:33:07,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:07" (3/3) ... [2020-10-23 20:33:07,474 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-23 20:33:07,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:33:07,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:33:07,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:33:07,528 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:33:07,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:33:07,529 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:33:07,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:33:07,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:33:07,529 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:33:07,529 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:33:07,529 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:33:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-23 20:33:07,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 20:33:07,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:07,557 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] [2020-10-23 20:33:07,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash 193386265, now seen corresponding path program 1 times [2020-10-23 20:33:07,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:07,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663231273] [2020-10-23 20:33:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:07,654 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:07,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663231273] [2020-10-23 20:33:07,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:07,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:33:07,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662467411] [2020-10-23 20:33:07,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:33:07,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:07,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:33:07,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:33:07,917 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-10-23 20:33:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:08,080 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2020-10-23 20:33:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:33:08,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-23 20:33:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:08,091 INFO L225 Difference]: With dead ends: 101 [2020-10-23 20:33:08,091 INFO L226 Difference]: Without dead ends: 59 [2020-10-23 20:33:08,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:33:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-23 20:33:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-23 20:33:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-23 20:33:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-23 20:33:08,147 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 32 [2020-10-23 20:33:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:08,148 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-23 20:33:08,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:33:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-23 20:33:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 20:33:08,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:08,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:08,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:33:08,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 116865489, now seen corresponding path program 1 times [2020-10-23 20:33:08,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:08,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885102112] [2020-10-23 20:33:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:08,160 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:08,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885102112] [2020-10-23 20:33:08,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:08,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:33:08,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604813627] [2020-10-23 20:33:08,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:33:08,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:08,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:33:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:33:08,364 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-23 20:33:08,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:08,642 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-23 20:33:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 20:33:08,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-23 20:33:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:08,646 INFO L225 Difference]: With dead ends: 128 [2020-10-23 20:33:08,647 INFO L226 Difference]: Without dead ends: 119 [2020-10-23 20:33:08,648 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 [2020-10-23 20:33:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-23 20:33:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 69. [2020-10-23 20:33:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-23 20:33:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-23 20:33:08,665 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 36 [2020-10-23 20:33:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:08,666 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-23 20:33:08,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:33:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-23 20:33:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 20:33:08,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:08,668 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] [2020-10-23 20:33:08,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:33:08,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:08,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:08,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1324191625, now seen corresponding path program 1 times [2020-10-23 20:33:08,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:08,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646085686] [2020-10-23 20:33:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:08,784 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:08,788 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:08,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646085686] [2020-10-23 20:33:08,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:08,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:33:08,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871514200] [2020-10-23 20:33:08,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:33:08,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:33:08,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:33:08,929 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 7 states. [2020-10-23 20:33:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:09,188 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-23 20:33:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 20:33:09,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-23 20:33:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:09,190 INFO L225 Difference]: With dead ends: 123 [2020-10-23 20:33:09,190 INFO L226 Difference]: Without dead ends: 107 [2020-10-23 20:33:09,191 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 [2020-10-23 20:33:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-23 20:33:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 67. [2020-10-23 20:33:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-23 20:33:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-23 20:33:09,203 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 42 [2020-10-23 20:33:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:09,204 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-23 20:33:09,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:33:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-23 20:33:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 20:33:09,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:09,206 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] [2020-10-23 20:33:09,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:33:09,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1634728969, now seen corresponding path program 1 times [2020-10-23 20:33:09,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:09,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970965651] [2020-10-23 20:33:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:09,263 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:09,267 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:09,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970965651] [2020-10-23 20:33:09,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:09,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:33:09,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110449532] [2020-10-23 20:33:09,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:33:09,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:09,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:33:09,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:33:09,385 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-10-23 20:33:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:09,651 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-23 20:33:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:33:09,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-23 20:33:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:09,653 INFO L225 Difference]: With dead ends: 107 [2020-10-23 20:33:09,653 INFO L226 Difference]: Without dead ends: 87 [2020-10-23 20:33:09,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:33:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-23 20:33:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 61. [2020-10-23 20:33:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-23 20:33:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-23 20:33:09,664 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 42 [2020-10-23 20:33:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:09,664 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-23 20:33:09,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:33:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-23 20:33:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:33:09,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:09,666 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, 1, 1] [2020-10-23 20:33:09,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:33:09,666 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:09,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:09,667 INFO L82 PathProgramCache]: Analyzing trace with hash 537702587, now seen corresponding path program 1 times [2020-10-23 20:33:09,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:09,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711497851] [2020-10-23 20:33:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:09,934 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-23 20:33:09,977 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,068 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,135 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,137 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,137 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:121 [2020-10-23 20:33:10,455 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-23 20:33:10,476 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,573 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,640 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,642 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,643 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:121 [2020-10-23 20:33:10,746 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:10,750 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:10,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711497851] [2020-10-23 20:33:10,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:10,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:33:10,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519020532] [2020-10-23 20:33:10,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:33:10,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:10,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:33:10,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:33:10,831 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2020-10-23 20:33:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:10,942 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-23 20:33:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:33:10,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-23 20:33:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:10,944 INFO L225 Difference]: With dead ends: 118 [2020-10-23 20:33:10,945 INFO L226 Difference]: Without dead ends: 80 [2020-10-23 20:33:10,946 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 [2020-10-23 20:33:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-23 20:33:10,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-23 20:33:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 20:33:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-10-23 20:33:10,955 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 48 [2020-10-23 20:33:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:10,956 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-10-23 20:33:10,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:33:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-10-23 20:33:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:33:10,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:10,958 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, 1, 1] [2020-10-23 20:33:10,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:33:10,958 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash 179721659, now seen corresponding path program 1 times [2020-10-23 20:33:10,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:10,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188722037] [2020-10-23 20:33:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:11,211 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-23 20:33:11,236 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:11,344 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-23 20:33:11,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:11,351 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:11,418 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:11,419 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:11,420 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:121 [2020-10-23 20:33:11,739 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-10-23 20:33:11,781 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:11,855 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:11,864 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:11,933 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:11,936 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:11,936 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:145, output treesize:121 [2020-10-23 20:33:12,009 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:12,013 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:12,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:12,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:12,135 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:33:12,135 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:33:12,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:33:12,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:33:12 BoogieIcfgContainer [2020-10-23 20:33:12,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:33:12,163 INFO L168 Benchmark]: Toolchain (without parser) took 6119.48 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.4 MB in the beginning and 127.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:12,164 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 151.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:33:12,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.92 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 103.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:12,171 INFO L168 Benchmark]: Boogie Preprocessor took 80.88 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 100.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:12,172 INFO L168 Benchmark]: RCFGBuilder took 649.91 ms. Allocated memory is still 151.0 MB. Free memory was 100.5 MB in the beginning and 90.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:12,172 INFO L168 Benchmark]: TraceAbstraction took 4691.30 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.2 MB in the beginning and 127.6 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:33:12,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 151.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 681.92 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 103.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.88 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 100.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 649.91 ms. Allocated memory is still 151.0 MB. Free memory was 100.5 MB in the beginning and 90.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4691.30 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.2 MB in the beginning and 127.6 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int 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] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_flag-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 242 SDslu, 531 SDs, 0 SdLazy, 621 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s 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=76occurred 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, 120 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...