/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/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:37:16,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:37:16,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:37:16,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:37:16,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:37:16,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:37:16,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:37:16,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:37:16,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:37:16,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:37:16,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:37:16,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:37:16,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:37:16,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:37:16,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:37:16,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:37:16,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:37:16,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:37:16,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:37:16,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:37:16,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:37:16,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:37:16,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:37:16,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:37:16,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:37:16,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:37:16,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:37:16,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:37:16,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:37:16,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:37:16,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:37:16,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:37:16,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:37:16,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:37:16,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:37:16,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:37:16,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:37:16,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:37:16,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:37:16,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:37:16,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:37:16,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:37:16,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:37:16,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:37:16,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:37:16,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:37:16,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:37:16,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:37:16,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:37:16,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:37:16,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:37:16,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:37:16,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:37:16,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:37:16,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:37:16,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:37:16,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:37:16,836 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:37:16,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:37:16,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:37:16,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:37:16,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:37:16,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:37:16,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:37:16,837 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:37:17,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:37:17,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:37:17,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:37:17,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:37:17,323 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:37:17,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2021-02-21 20:37:17,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc20e83a1/d7901dea83d04d30982418b996c6750a/FLAG053d962f9 [2021-02-21 20:37:18,256 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:37:18,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2021-02-21 20:37:18,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc20e83a1/d7901dea83d04d30982418b996c6750a/FLAG053d962f9 [2021-02-21 20:37:18,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc20e83a1/d7901dea83d04d30982418b996c6750a [2021-02-21 20:37:18,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:37:18,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:37:18,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:37:18,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:37:18,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:37:18,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:37:18" (1/1) ... [2021-02-21 20:37:18,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5224b359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:18, skipping insertion in model container [2021-02-21 20:37:18,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:37:18" (1/1) ... [2021-02-21 20:37:18,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:37:18,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:37:18,965 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/simple-1.i[23237,23250] [2021-02-21 20:37:18,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:37:18,982 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:37:19,029 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/simple-1.i[23237,23250] [2021-02-21 20:37:19,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:37:19,125 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:37:19,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19 WrapperNode [2021-02-21 20:37:19,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:37:19,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:37:19,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:37:19,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:37:19,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... [2021-02-21 20:37:19,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:37:19,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:37:19,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:37:19,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:37:19,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:37:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:37:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:37:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:37:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 20:37:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 20:37:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 20:37:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 20:37:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 20:37:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 20:37:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:37:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:37:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:37:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:37:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:37:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:37:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:37:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:37:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:37:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:37:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:37:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:37:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:37:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:37:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:37:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:37:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:37:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:37:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:37:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:37:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:37:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:37:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:37:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:37:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 20:37:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 20:37:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 20:37:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 20:37:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 20:37:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:37:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:37:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:37:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:37:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:37:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:37:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:37:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:37:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:37:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:37:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:37:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:37:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:37:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:37:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:37:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:37:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:37:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:37:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:37:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:37:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:37:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:37:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:37:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:37:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:37:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:37:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:37:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:37:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:37:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:37:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:37:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:37:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:37:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:37:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:37:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:37:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:37:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:37:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:37:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:37:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:37:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:37:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:37:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:37:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:37:19,452 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:37:19,453 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:37:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:37:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:37:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:37:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:37:19,454 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:37:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:37:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:37:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:37:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:37:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:37:19,456 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:37:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:37:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:37:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:37:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:37:19,457 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:37:19,458 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:37:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:37:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:37:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:37:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:37:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:37:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:37:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:37:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:37:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:37:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:37:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:37:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:37:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:37:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:37:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:37:19,462 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 20:37:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:37:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:37:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:37:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:37:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:37:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:37:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:37:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:37:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:37:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:37:20,134 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 20:37:20,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:37:20,362 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 20:37:20,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:37:20 BoogieIcfgContainer [2021-02-21 20:37:20,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:37:20,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:37:20,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:37:20,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:37:20,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:37:18" (1/3) ... [2021-02-21 20:37:20,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f845a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:37:20, skipping insertion in model container [2021-02-21 20:37:20,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:37:19" (2/3) ... [2021-02-21 20:37:20,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f845a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:37:20, skipping insertion in model container [2021-02-21 20:37:20,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:37:20" (3/3) ... [2021-02-21 20:37:20,384 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-02-21 20:37:20,400 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:37:20,406 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:37:20,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:37:20,452 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:37:20,453 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:37:20,453 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:37:20,453 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:37:20,453 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:37:20,453 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:37:20,453 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:37:20,453 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:37:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-02-21 20:37:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 20:37:20,480 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:20,481 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] [2021-02-21 20:37:20,481 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:20,488 INFO L82 PathProgramCache]: Analyzing trace with hash -464779914, now seen corresponding path program 1 times [2021-02-21 20:37:20,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:20,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357453872] [2021-02-21 20:37:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:20,596 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:20,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:20,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:20,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:20,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:20,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:20,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:20,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357453872] [2021-02-21 20:37:20,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:20,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:37:20,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053802859] [2021-02-21 20:37:20,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:37:20,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:20,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:37:20,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:37:20,958 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2021-02-21 20:37:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:21,225 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2021-02-21 20:37:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:37:21,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-21 20:37:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:21,236 INFO L225 Difference]: With dead ends: 70 [2021-02-21 20:37:21,236 INFO L226 Difference]: Without dead ends: 42 [2021-02-21 20:37:21,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:37:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-21 20:37:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-02-21 20:37:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-21 20:37:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-21 20:37:21,301 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 26 [2021-02-21 20:37:21,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:21,301 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-21 20:37:21,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:37:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-21 20:37:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 20:37:21,304 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:21,305 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] [2021-02-21 20:37:21,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:37:21,305 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:21,307 INFO L82 PathProgramCache]: Analyzing trace with hash -224928320, now seen corresponding path program 1 times [2021-02-21 20:37:21,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:21,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370975491] [2021-02-21 20:37:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:21,327 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:21,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:21,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:21,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:37:21,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:21,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:21,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:21,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:21,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:21,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370975491] [2021-02-21 20:37:21,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:21,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:37:21,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36039614] [2021-02-21 20:37:21,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:37:21,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:37:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:37:21,581 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 8 states. [2021-02-21 20:37:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:21,802 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2021-02-21 20:37:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:37:21,803 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-21 20:37:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:21,805 INFO L225 Difference]: With dead ends: 84 [2021-02-21 20:37:21,805 INFO L226 Difference]: Without dead ends: 81 [2021-02-21 20:37:21,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:37:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-21 20:37:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 51. [2021-02-21 20:37:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-21 20:37:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-02-21 20:37:21,821 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 28 [2021-02-21 20:37:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:21,822 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-02-21 20:37:21,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:37:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-02-21 20:37:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 20:37:21,824 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:21,824 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2021-02-21 20:37:21,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:37:21,825 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1235598545, now seen corresponding path program 1 times [2021-02-21 20:37:21,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:21,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834548953] [2021-02-21 20:37:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:21,858 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:21,864 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:21,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:21,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:21,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:37:21,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:37:21,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:21,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:37:22,014 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-21 20:37:22,015 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-21 20:37:22,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:22,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:22,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:22,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:37:22,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:22,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:37:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:37:22,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:37:22,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:37:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:37:22,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834548953] [2021-02-21 20:37:22,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:37:22,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:37:22,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334098729] [2021-02-21 20:37:22,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:37:22,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:37:22,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:37:22,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:37:22,126 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 10 states. [2021-02-21 20:37:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:37:22,522 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-02-21 20:37:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:37:22,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2021-02-21 20:37:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:37:22,524 INFO L225 Difference]: With dead ends: 83 [2021-02-21 20:37:22,524 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 20:37:22,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:37:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 20:37:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2021-02-21 20:37:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 20:37:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-02-21 20:37:22,537 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 35 [2021-02-21 20:37:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:37:22,537 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-02-21 20:37:22,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:37:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-02-21 20:37:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 20:37:22,539 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:37:22,539 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] [2021-02-21 20:37:22,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:37:22,540 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:37:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:37:22,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1534875846, now seen corresponding path program 1 times [2021-02-21 20:37:22,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:37:22,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119451254] [2021-02-21 20:37:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:37:22,567 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:37:22,572 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:37:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:37:22,597 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:37:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:37:22,621 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:37:22,679 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:37:22,679 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:37:22,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:37:22,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:37:22 BoogieIcfgContainer [2021-02-21 20:37:22,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:37:22,703 INFO L168 Benchmark]: Toolchain (without parser) took 4207.14 ms. Allocated memory was 160.4 MB in the beginning and 207.6 MB in the end (delta: 47.2 MB). Free memory was 136.0 MB in the beginning and 109.8 MB in the end (delta: 26.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:22,703 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 141.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:37:22,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.75 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 112.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:22,709 INFO L168 Benchmark]: Boogie Preprocessor took 138.19 ms. Allocated memory is still 160.4 MB. Free memory was 112.8 MB in the beginning and 110.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:22,710 INFO L168 Benchmark]: RCFGBuilder took 1096.80 ms. Allocated memory is still 160.4 MB. Free memory was 110.2 MB in the beginning and 103.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:22,713 INFO L168 Benchmark]: TraceAbstraction took 2331.78 ms. Allocated memory was 160.4 MB in the beginning and 207.6 MB in the end (delta: 47.2 MB). Free memory was 103.3 MB in the beginning and 109.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:37:22,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 141.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 614.75 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 112.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 138.19 ms. Allocated memory is still 160.4 MB. Free memory was 112.8 MB in the beginning and 110.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1096.80 ms. Allocated memory is still 160.4 MB. Free memory was 110.2 MB in the beginning and 103.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2331.78 ms. Allocated memory was 160.4 MB in the beginning and 207.6 MB in the end (delta: 47.2 MB). Free memory was 103.3 MB in the beginning and 109.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] a->h = 2 [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND TRUE p->h != 2 [L549] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 209 SDslu, 263 SDs, 0 SdLazy, 285 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 3 MinimizatonAttempts, 47 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...