/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:54:53,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:54:53,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:54:53,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:54:53,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:54:53,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:54:53,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:54:53,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:54:53,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:54:53,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:54:53,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:54:53,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:54:53,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:54:53,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:54:53,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:54:53,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:54:53,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:54:53,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:54:53,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:54:53,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:54:53,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:54:53,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:54:53,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:54:53,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:54:53,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:54:53,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:54:53,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:54:53,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:54:53,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:54:53,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:54:53,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:54:53,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:54:53,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:54:53,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:54:53,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:54:53,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:54:53,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:54:53,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:54:53,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:54:53,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:54:53,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:54:53,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:54:53,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:54:53,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:54:53,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:54:53,540 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:54:53,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:54:53,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:54:53,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:54:53,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:54:53,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:54:53,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:54:53,541 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:54:53,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:54:53,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:54:53,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:54:53,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:54:53,544 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:54:53,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:54:53,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:54:53,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:54:53,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:54:53,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:54:53,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:54:53,546 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:54:53,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:54:53,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:54:53,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:54:53,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:54:53,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:54:53,981 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:54:53,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2021-02-22 01:54:54,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804bb13df/f2ff0b871c0a4aa385d83f361ec8279b/FLAG8b65b34bf [2021-02-22 01:54:54,810 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:54:54,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2021-02-22 01:54:54,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804bb13df/f2ff0b871c0a4aa385d83f361ec8279b/FLAG8b65b34bf [2021-02-22 01:54:55,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804bb13df/f2ff0b871c0a4aa385d83f361ec8279b [2021-02-22 01:54:55,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:54:55,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:54:55,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:54:55,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:54:55,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:54:55,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139c6a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55, skipping insertion in model container [2021-02-22 01:54:55,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:54:55,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:54:55,573 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2021-02-22 01:54:55,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:54:55,589 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:54:55,668 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2021-02-22 01:54:55,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:54:55,749 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:54:55,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55 WrapperNode [2021-02-22 01:54:55,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:54:55,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:54:55,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:54:55,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:54:55,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (1/1) ... [2021-02-22 01:54:55,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:54:55,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:54:55,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:54:55,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:54:55,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (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 [2021-02-22 01:54:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:54:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:54:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:54:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 01:54:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 01:54:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-22 01:54:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-22 01:54:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-22 01:54:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-22 01:54:56,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:54:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:54:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:54:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 01:54:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 01:54:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:54:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:54:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:54:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 01:54:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 01:54:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 01:54:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 01:54:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 01:54:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 01:54:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 01:54:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 01:54:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 01:54:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 01:54:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 01:54:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 01:54:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 01:54:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 01:54:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 01:54:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 01:54:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 01:54:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 01:54:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-22 01:54:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-22 01:54:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 01:54:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 01:54:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 01:54:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 01:54:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 01:54:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 01:54:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 01:54:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 01:54:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 01:54:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 01:54:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 01:54:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 01:54:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 01:54:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 01:54:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 01:54:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 01:54:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 01:54:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 01:54:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 01:54:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 01:54:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 01:54:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 01:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:54:56,512 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-22 01:54:56,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:54:56,666 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 01:54:56,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:54:56 BoogieIcfgContainer [2021-02-22 01:54:56,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:54:56,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:54:56,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:54:56,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:54:56,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:54:55" (1/3) ... [2021-02-22 01:54:56,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3dccb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:54:56, skipping insertion in model container [2021-02-22 01:54:56,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:55" (2/3) ... [2021-02-22 01:54:56,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3dccb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:54:56, skipping insertion in model container [2021-02-22 01:54:56,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:54:56" (3/3) ... [2021-02-22 01:54:56,677 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2021-02-22 01:54:56,684 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:54:56,689 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:54:56,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:54:56,731 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:54:56,732 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:54:56,732 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:54:56,732 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:54:56,732 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:54:56,732 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:54:56,732 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:54:56,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:54:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2021-02-22 01:54:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-22 01:54:56,758 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:56,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:56,759 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash -644551900, now seen corresponding path program 1 times [2021-02-22 01:54:56,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:56,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361545129] [2021-02-22 01:54:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:56,865 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:57,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:57,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:57,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:57,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:54:57,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361545129] [2021-02-22 01:54:57,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:57,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:54:57,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544997557] [2021-02-22 01:54:57,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:54:57,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:57,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:54:57,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:54:57,118 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2021-02-22 01:54:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:57,275 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2021-02-22 01:54:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:54:57,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-02-22 01:54:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:57,286 INFO L225 Difference]: With dead ends: 94 [2021-02-22 01:54:57,287 INFO L226 Difference]: Without dead ends: 57 [2021-02-22 01:54:57,290 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 [2021-02-22 01:54:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-22 01:54:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-22 01:54:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-22 01:54:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-02-22 01:54:57,340 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 30 [2021-02-22 01:54:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:57,341 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-02-22 01:54:57,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:54:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-02-22 01:54:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-22 01:54:57,343 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:57,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:57,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:54:57,344 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:57,345 INFO L82 PathProgramCache]: Analyzing trace with hash 338946844, now seen corresponding path program 1 times [2021-02-22 01:54:57,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:57,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186402823] [2021-02-22 01:54:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:57,352 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:57,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:57,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:57,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:57,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:57,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:54:57,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:57,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:57,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:54:57,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186402823] [2021-02-22 01:54:57,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:57,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:54:57,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354858189] [2021-02-22 01:54:57,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:54:57,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:57,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:54:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:54:57,612 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 7 states. [2021-02-22 01:54:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:57,908 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2021-02-22 01:54:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:54:57,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-02-22 01:54:57,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:57,911 INFO L225 Difference]: With dead ends: 126 [2021-02-22 01:54:57,911 INFO L226 Difference]: Without dead ends: 119 [2021-02-22 01:54:57,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:54:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-02-22 01:54:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 67. [2021-02-22 01:54:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-22 01:54:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2021-02-22 01:54:57,928 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 34 [2021-02-22 01:54:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:57,928 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2021-02-22 01:54:57,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:54:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2021-02-22 01:54:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-22 01:54:57,930 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:57,930 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:57,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:54:57,931 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash -618579532, now seen corresponding path program 1 times [2021-02-22 01:54:57,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:57,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132698991] [2021-02-22 01:54:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:57,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:54:57,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:57,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:54:57,988 WARN L141 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size [2021-02-22 01:54:58,003 WARN L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-02-22 01:54:58,010 WARN L141 QuantifierPusher]: treesize reduction 18, result has 71.0 percent of original size [2021-02-22 01:54:58,014 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 01:54:58,019 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:58,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:54:58,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:58,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-22 01:54:58,027 WARN L147 QuantifierPusher]: treesize reduction 18, result has 71.0 percent of original size 44 [2021-02-22 01:54:58,028 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 01:54:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:54:58,057 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:54:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:54:58,077 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:54:58,108 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:54:58,109 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:54:58,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:54:58,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:54:58 BoogieIcfgContainer [2021-02-22 01:54:58,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:54:58,129 INFO L168 Benchmark]: Toolchain (without parser) took 3071.10 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 136.9 MB in the beginning and 121.6 MB in the end (delta: 15.3 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:58,129 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:54:58,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.23 ms. Allocated memory is still 161.5 MB. Free memory was 135.7 MB in the beginning and 114.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:58,131 INFO L168 Benchmark]: Boogie Preprocessor took 139.78 ms. Allocated memory is still 161.5 MB. Free memory was 114.0 MB in the beginning and 144.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:58,132 INFO L168 Benchmark]: RCFGBuilder took 776.14 ms. Allocated memory is still 161.5 MB. Free memory was 144.4 MB in the beginning and 99.3 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:58,133 INFO L168 Benchmark]: TraceAbstraction took 1457.42 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 98.7 MB in the beginning and 121.6 MB in the end (delta: -22.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:58,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 674.23 ms. Allocated memory is still 161.5 MB. Free memory was 135.7 MB in the beginning and 114.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.78 ms. Allocated memory is still 161.5 MB. Free memory was 114.0 MB in the beginning and 144.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 776.14 ms. Allocated memory is still 161.5 MB. Free memory was 144.4 MB in the beginning and 99.3 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1457.42 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 98.7 MB in the beginning and 121.6 MB in the end (delta: -22.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) [L536] p = a [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a [L550] COND TRUE \read(flag) [L551] EXPR p->h [L551] COND TRUE p->h == 2 [L552] EXPR p->n [L552] p = p->n [L551] EXPR p->h [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 107 SDslu, 171 SDs, 0 SdLazy, 217 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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, 52 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...