/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/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:41:41,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:41:41,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:41:42,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:41:42,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:41:42,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:41:42,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:41:42,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:41:42,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:41:42,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:41:42,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:41:42,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:41:42,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:41:42,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:41:42,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:41:42,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:41:42,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:41:42,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:41:42,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:41:42,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:41:42,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:41:42,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:41:42,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:41:42,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:41:42,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:41:42,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:41:42,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:41:42,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:41:42,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:41:42,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:41:42,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:41:42,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:41:42,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:41:42,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:41:42,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:41:42,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:41:42,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:41:42,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:41:42,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:41:42,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:41:42,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:41:42,085 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 20:41:42,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:41:42,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:41:42,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:41:42,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:41:42,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:41:42,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:41:42,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:41:42,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:41:42,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:41:42,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:41:42,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:41:42,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:41:42,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:41:42,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:41:42,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:41:42,132 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:41:42,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:41:42,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:41:42,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:41:42,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:41:42,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:41:42,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:41:42,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:41:42,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:41:42,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:41:42,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:41:42,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:41:42,625 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:41:42,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2021-02-21 20:41:42,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16454e2f/87aa140ce2c5480fb086568f07dfaea0/FLAG7f302c257 [2021-02-21 20:41:43,456 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:41:43,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2021-02-21 20:41:43,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16454e2f/87aa140ce2c5480fb086568f07dfaea0/FLAG7f302c257 [2021-02-21 20:41:43,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16454e2f/87aa140ce2c5480fb086568f07dfaea0 [2021-02-21 20:41:43,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:41:43,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:41:43,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:43,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:41:43,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:41:43,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55eba6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:43, skipping insertion in model container [2021-02-21 20:41:43,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:43" (1/1) ... [2021-02-21 20:41:43,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:41:43,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:41:44,131 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-02-21 20:41:44,140 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-02-21 20:41:44,144 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-02-21 20:41:44,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:44,172 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:41:44,239 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-02-21 20:41:44,244 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-02-21 20:41:44,246 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-02-21 20:41:44,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:44,321 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:41:44,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44 WrapperNode [2021-02-21 20:41:44,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:44,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:41:44,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:41:44,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:41:44,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (1/1) ... [2021-02-21 20:41:44,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:41:44,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:41:44,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:41:44,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:41:44,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (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 20:41:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:41:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:41:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:41:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:41:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:41:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:41:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:41:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:41:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:41:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:41:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:41:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:41:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:41:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:41:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:41:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:41:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:41:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:41:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:41:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:41:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:41:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:41:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:41:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:41:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:41:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:41:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:41:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:41:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:41:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:41:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:41:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:41:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:41:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:41:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:41:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:41:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:41:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:41:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:41:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:41:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:41:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:41:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:41:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:41:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:41:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:41:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:41:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:41:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:41:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:41:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:41:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:41:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:41:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:41:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:41:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:41:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:41:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:41:44,584 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:41:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:41:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:41:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:41:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:41:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:41:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:41:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:41:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:41:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:41:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:41:45,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:41:45,276 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-02-21 20:41:45,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:45 BoogieIcfgContainer [2021-02-21 20:41:45,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:41:45,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:41:45,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:41:45,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:41:45,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:41:43" (1/3) ... [2021-02-21 20:41:45,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1adc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:45, skipping insertion in model container [2021-02-21 20:41:45,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:44" (2/3) ... [2021-02-21 20:41:45,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1adc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:45, skipping insertion in model container [2021-02-21 20:41:45,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:45" (3/3) ... [2021-02-21 20:41:45,315 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-02-21 20:41:45,328 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:41:45,332 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-21 20:41:45,348 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-21 20:41:45,370 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:41:45,370 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:41:45,370 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:41:45,371 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:41:45,371 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:41:45,371 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:41:45,371 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:41:45,371 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:41:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2021-02-21 20:41:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 20:41:45,399 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:45,400 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] [2021-02-21 20:41:45,400 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:45,407 INFO L82 PathProgramCache]: Analyzing trace with hash -895071465, now seen corresponding path program 1 times [2021-02-21 20:41:45,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:45,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913008134] [2021-02-21 20:41:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:45,516 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:45,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:45,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:45,705 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 20:41:45,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913008134] [2021-02-21 20:41:45,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:45,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:41:45,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608598789] [2021-02-21 20:41:45,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:41:45,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:45,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:41:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:41:45,746 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2021-02-21 20:41:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:46,049 INFO L93 Difference]: Finished difference Result 163 states and 194 transitions. [2021-02-21 20:41:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:41:46,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-21 20:41:46,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:46,063 INFO L225 Difference]: With dead ends: 163 [2021-02-21 20:41:46,064 INFO L226 Difference]: Without dead ends: 80 [2021-02-21 20:41:46,068 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 20:41:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-21 20:41:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-02-21 20:41:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-21 20:41:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-02-21 20:41:46,119 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 22 [2021-02-21 20:41:46,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:46,119 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-02-21 20:41:46,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:41:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-02-21 20:41:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 20:41:46,121 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:46,121 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] [2021-02-21 20:41:46,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:41:46,122 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1748629041, now seen corresponding path program 1 times [2021-02-21 20:41:46,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:46,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662030210] [2021-02-21 20:41:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:46,130 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:46,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:46,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:46,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,265 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 20:41:46,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662030210] [2021-02-21 20:41:46,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:46,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:46,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382481897] [2021-02-21 20:41:46,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:46,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:46,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:46,269 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2021-02-21 20:41:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:46,566 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-02-21 20:41:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:41:46,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-21 20:41:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:46,569 INFO L225 Difference]: With dead ends: 108 [2021-02-21 20:41:46,569 INFO L226 Difference]: Without dead ends: 106 [2021-02-21 20:41:46,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-21 20:41:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-02-21 20:41:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-21 20:41:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-02-21 20:41:46,591 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 24 [2021-02-21 20:41:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:46,591 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-02-21 20:41:46,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-02-21 20:41:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 20:41:46,593 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:46,593 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 20:41:46,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:41:46,594 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:46,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash 975517528, now seen corresponding path program 1 times [2021-02-21 20:41:46,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:46,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653892224] [2021-02-21 20:41:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:46,601 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:46,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:46,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:41:46,761 WARN L141 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-02-21 20:41:46,764 WARN L147 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size 9 [2021-02-21 20:41:46,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:46,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:46,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:46,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:46,846 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 20:41:46,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653892224] [2021-02-21 20:41:46,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:46,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:41:46,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840870115] [2021-02-21 20:41:46,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:41:46,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:46,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:41:46,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:46,852 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 8 states. [2021-02-21 20:41:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:47,193 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-02-21 20:41:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:41:47,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-21 20:41:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:47,195 INFO L225 Difference]: With dead ends: 132 [2021-02-21 20:41:47,195 INFO L226 Difference]: Without dead ends: 129 [2021-02-21 20:41:47,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:41:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-02-21 20:41:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 87. [2021-02-21 20:41:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-21 20:41:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-02-21 20:41:47,216 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 28 [2021-02-21 20:41:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:47,216 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-02-21 20:41:47,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:41:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-02-21 20:41:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 20:41:47,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:47,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:47,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:41:47,219 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash 525692103, now seen corresponding path program 1 times [2021-02-21 20:41:47,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:47,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845762203] [2021-02-21 20:41:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:47,225 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:47,267 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:47,301 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:47,354 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:41:47,354 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:41:47,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:41:47,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:41:47 BoogieIcfgContainer [2021-02-21 20:41:47,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:41:47,383 INFO L168 Benchmark]: Toolchain (without parser) took 3709.87 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 54.5 MB in the end (delta: 77.0 MB). Peak memory consumption was 78.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:47,385 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:41:47,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.74 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 107.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:47,391 INFO L168 Benchmark]: Boogie Preprocessor took 120.48 ms. Allocated memory is still 156.2 MB. Free memory was 107.9 MB in the beginning and 104.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:47,392 INFO L168 Benchmark]: RCFGBuilder took 850.92 ms. Allocated memory is still 156.2 MB. Free memory was 104.8 MB in the beginning and 137.4 MB in the end (delta: -32.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:47,393 INFO L168 Benchmark]: TraceAbstraction took 2082.73 ms. Allocated memory is still 156.2 MB. Free memory was 136.8 MB in the beginning and 54.5 MB in the end (delta: 82.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:47,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory is still 132.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 638.74 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 107.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.48 ms. Allocated memory is still 156.2 MB. Free memory was 107.9 MB in the beginning and 104.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 850.92 ms. Allocated memory is still 156.2 MB. Free memory was 104.8 MB in the beginning and 137.4 MB in the end (delta: -32.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2082.73 ms. Allocated memory is still 156.2 MB. Free memory was 136.8 MB in the beginning and 54.5 MB in the end (delta: 82.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1051]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L1051] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 539 SDslu, 245 SDs, 0 SdLazy, 389 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred 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, 70 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...