/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/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:48:55,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:48:55,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:48:55,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:48:55,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:48:55,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:48:55,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:48:55,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:48:55,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:48:55,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:48:55,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:48:55,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:48:55,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:48:55,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:48:55,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:48:55,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:48:55,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:48:55,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:48:55,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:48:55,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:48:55,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:48:55,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:48:55,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:48:55,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:48:55,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:48:55,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:48:55,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:48:55,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:48:55,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:48:55,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:48:55,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:48:55,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:48:55,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:48:55,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:48:55,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:48:55,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:48:55,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:48:55,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:48:55,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:48:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:48:55,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:48:55,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:48:55,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:48:55,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:48:55,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:48:55,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:48:55,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:48:55,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:48:55,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:48:55,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:48:55,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:48:55,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:48:55,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:48:55,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:48:55,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:48:55,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:48:55,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:48:55,831 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:48:55,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:48:55,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:48:55,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:48:55,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:48:55,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:48:55,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:48:55,832 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:48:56,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:48:56,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:48:56,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:48:56,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:48:56,236 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:48:56,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-11-07 00:48:56,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a45a77b/e1461f9e084a449dab1ef1f615b40188/FLAG681633eb9 [2020-11-07 00:48:57,003 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:48:57,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-11-07 00:48:57,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a45a77b/e1461f9e084a449dab1ef1f615b40188/FLAG681633eb9 [2020-11-07 00:48:57,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a45a77b/e1461f9e084a449dab1ef1f615b40188 [2020-11-07 00:48:57,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:48:57,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:48:57,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:48:57,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:48:57,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:48:57,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:57" (1/1) ... [2020-11-07 00:48:57,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2ae5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:57, skipping insertion in model container [2020-11-07 00:48:57,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:57" (1/1) ... [2020-11-07 00:48:57,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:48:57,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:48:57,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:48:57,871 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:48:57,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:48:58,049 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:48:58,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58 WrapperNode [2020-11-07 00:48:58,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:48:58,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:48:58,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:48:58,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:48:58,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... [2020-11-07 00:48:58,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:48:58,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:48:58,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:48:58,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:48:58,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:48:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:48:58,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:48:58,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:48:58,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 00:48:58,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-11-07 00:48:58,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:48:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:48:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:48:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:48:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:48:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:48:58,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:48:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 00:48:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 00:48:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:48:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:48:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:48:58,239 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:48:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:48:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:48:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:48:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:48:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:48:58,240 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:48:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:48:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:48:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:48:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:48:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:48:58,241 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:48:58,242 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:48:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:48:58,244 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:48:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:48:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:48:58,247 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:48:58,248 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:48:58,249 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:48:58,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:48:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:48:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-11-07 00:48:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-11-07 00:48:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:48:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:48:59,167 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:48:59,168 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-11-07 00:48:59,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:59 BoogieIcfgContainer [2020-11-07 00:48:59,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:48:59,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:48:59,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:48:59,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:48:59,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:48:57" (1/3) ... [2020-11-07 00:48:59,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be79396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:59, skipping insertion in model container [2020-11-07 00:48:59,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:58" (2/3) ... [2020-11-07 00:48:59,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be79396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:59, skipping insertion in model container [2020-11-07 00:48:59,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:59" (3/3) ... [2020-11-07 00:48:59,180 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-11-07 00:48:59,196 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:48:59,200 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:48:59,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:48:59,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:48:59,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:48:59,239 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:48:59,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:48:59,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:48:59,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:48:59,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:48:59,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:48:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-11-07 00:48:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 00:48:59,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:48:59,274 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] [2020-11-07 00:48:59,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:48:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:48:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 946346925, now seen corresponding path program 1 times [2020-11-07 00:48:59,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:48:59,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964275945] [2020-11-07 00:48:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:48:59,393 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:48:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:48:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:48:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:48:59,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964275945] [2020-11-07 00:48:59,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:48:59,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:48:59,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326045834] [2020-11-07 00:48:59,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:48:59,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:48:59,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:48:59,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:48:59,577 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 3 states. [2020-11-07 00:49:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:00,136 INFO L93 Difference]: Finished difference Result 533 states and 704 transitions. [2020-11-07 00:49:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:49:00,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-07 00:49:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:00,153 INFO L225 Difference]: With dead ends: 533 [2020-11-07 00:49:00,154 INFO L226 Difference]: Without dead ends: 258 [2020-11-07 00:49:00,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:49:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-11-07 00:49:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 230. [2020-11-07 00:49:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-07 00:49:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 253 transitions. [2020-11-07 00:49:00,244 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 253 transitions. Word has length 21 [2020-11-07 00:49:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:00,245 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 253 transitions. [2020-11-07 00:49:00,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:49:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 253 transitions. [2020-11-07 00:49:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-07 00:49:00,246 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:00,246 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] [2020-11-07 00:49:00,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:49:00,247 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash -262869876, now seen corresponding path program 1 times [2020-11-07 00:49:00,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:00,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501864532] [2020-11-07 00:49:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:00,254 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:00,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501864532] [2020-11-07 00:49:00,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:00,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:49:00,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835687861] [2020-11-07 00:49:00,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:49:00,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:00,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:49:00,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:49:00,348 INFO L87 Difference]: Start difference. First operand 230 states and 253 transitions. Second operand 4 states. [2020-11-07 00:49:00,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:00,892 INFO L93 Difference]: Finished difference Result 461 states and 510 transitions. [2020-11-07 00:49:00,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:49:00,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-07 00:49:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:00,899 INFO L225 Difference]: With dead ends: 461 [2020-11-07 00:49:00,899 INFO L226 Difference]: Without dead ends: 259 [2020-11-07 00:49:00,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:49:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-07 00:49:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 232. [2020-11-07 00:49:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-07 00:49:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 255 transitions. [2020-11-07 00:49:00,964 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 255 transitions. Word has length 23 [2020-11-07 00:49:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:00,964 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 255 transitions. [2020-11-07 00:49:00,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:49:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 255 transitions. [2020-11-07 00:49:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 00:49:00,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:00,966 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] [2020-11-07 00:49:00,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:49:00,966 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:00,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:00,967 INFO L82 PathProgramCache]: Analyzing trace with hash 981297497, now seen corresponding path program 1 times [2020-11-07 00:49:00,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:00,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758200480] [2020-11-07 00:49:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:02,247 WARN L194 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-11-07 00:49:02,315 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 4=[|v_#memory_int_44|, |v_#memory_$Pointer$.base_71|, |v_#memory_$Pointer$.offset_71|]} [2020-11-07 00:49:02,333 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:02,633 WARN L194 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 00:49:02,634 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:02,642 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:02,843 WARN L194 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 00:49:02,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:02,858 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:03,063 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 00:49:03,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:03,081 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:03,261 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:03,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:03,266 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:03,266 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-11-07 00:49:03,463 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:03,485 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:03,491 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:03,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758200480] [2020-11-07 00:49:03,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:03,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:49:03,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033650480] [2020-11-07 00:49:03,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:49:03,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:49:03,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:49:03,711 INFO L87 Difference]: Start difference. First operand 232 states and 255 transitions. Second operand 8 states. [2020-11-07 00:49:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:04,948 INFO L93 Difference]: Finished difference Result 326 states and 363 transitions. [2020-11-07 00:49:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 00:49:04,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-11-07 00:49:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:04,952 INFO L225 Difference]: With dead ends: 326 [2020-11-07 00:49:04,952 INFO L226 Difference]: Without dead ends: 319 [2020-11-07 00:49:04,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-07 00:49:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-11-07 00:49:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 237. [2020-11-07 00:49:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-11-07 00:49:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2020-11-07 00:49:04,995 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 39 [2020-11-07 00:49:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:04,996 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2020-11-07 00:49:04,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:49:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2020-11-07 00:49:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:49:04,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:04,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:04,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:49:04,998 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1272473326, now seen corresponding path program 1 times [2020-11-07 00:49:04,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:04,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217057485] [2020-11-07 00:49:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:06,516 WARN L194 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-11-07 00:49:06,541 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_47|], 4=[|v_#memory_$Pointer$.base_76|, |v_#memory_$Pointer$.offset_76|, |v_#memory_int_49|]} [2020-11-07 00:49:06,557 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:06,745 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 00:49:06,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:06,759 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:06,925 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 00:49:06,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:06,938 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:07,110 WARN L194 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 00:49:07,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:07,118 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:07,275 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:07,276 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:07,278 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:07,279 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-11-07 00:49:07,435 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:07,441 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:07,445 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:07,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217057485] [2020-11-07 00:49:07,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:07,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:49:07,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40837785] [2020-11-07 00:49:07,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:49:07,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:07,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:49:07,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:49:07,604 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand 6 states. [2020-11-07 00:49:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:08,588 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2020-11-07 00:49:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:49:08,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-07 00:49:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:08,591 INFO L225 Difference]: With dead ends: 256 [2020-11-07 00:49:08,591 INFO L226 Difference]: Without dead ends: 250 [2020-11-07 00:49:08,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:49:08,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-07 00:49:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 235. [2020-11-07 00:49:08,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-07 00:49:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2020-11-07 00:49:08,624 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 48 [2020-11-07 00:49:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:08,624 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2020-11-07 00:49:08,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:49:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2020-11-07 00:49:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:49:08,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:08,626 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:08,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:49:08,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1591518012, now seen corresponding path program 1 times [2020-11-07 00:49:08,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:08,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651877796] [2020-11-07 00:49:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:09,683 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-11-07 00:49:09,697 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_52|], 4=[|v_#memory_int_54|, |v_#memory_$Pointer$.base_81|, |v_#memory_$Pointer$.offset_81|]} [2020-11-07 00:49:09,708 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:09,959 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 00:49:09,960 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:09,967 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:10,150 WARN L194 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 00:49:10,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:10,161 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:10,313 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 00:49:10,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:10,321 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:10,499 WARN L194 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:10,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:10,502 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:10,502 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-11-07 00:49:10,667 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:10,673 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:10,677 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:10,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651877796] [2020-11-07 00:49:10,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:10,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:49:10,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55261787] [2020-11-07 00:49:10,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:49:10,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:10,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:49:10,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:49:10,826 INFO L87 Difference]: Start difference. First operand 235 states and 257 transitions. Second operand 6 states. [2020-11-07 00:49:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:11,739 INFO L93 Difference]: Finished difference Result 254 states and 278 transitions. [2020-11-07 00:49:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:49:11,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-07 00:49:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:11,747 INFO L225 Difference]: With dead ends: 254 [2020-11-07 00:49:11,747 INFO L226 Difference]: Without dead ends: 248 [2020-11-07 00:49:11,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-07 00:49:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-11-07 00:49:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2020-11-07 00:49:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-11-07 00:49:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 254 transitions. [2020-11-07 00:49:11,783 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 254 transitions. Word has length 48 [2020-11-07 00:49:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:11,787 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 254 transitions. [2020-11-07 00:49:11,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:49:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 254 transitions. [2020-11-07 00:49:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:49:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:11,796 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:11,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:49:11,796 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1804582388, now seen corresponding path program 1 times [2020-11-07 00:49:11,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:11,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039527776] [2020-11-07 00:49:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:12,796 WARN L194 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-11-07 00:49:12,810 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_57|], 4=[|v_#memory_$Pointer$.base_86|, |v_#memory_$Pointer$.offset_86|, |v_#memory_int_59|]} [2020-11-07 00:49:12,818 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:13,006 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 00:49:13,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:13,014 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:13,249 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 00:49:13,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:13,256 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:13,465 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 00:49:13,465 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:13,472 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:13,636 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:13,637 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:13,638 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:13,638 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-11-07 00:49:13,808 WARN L194 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:13,812 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:13,818 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:14,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039527776] [2020-11-07 00:49:14,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:14,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 00:49:14,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743766766] [2020-11-07 00:49:14,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 00:49:14,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 00:49:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:49:14,072 INFO L87 Difference]: Start difference. First operand 233 states and 254 transitions. Second operand 11 states. [2020-11-07 00:49:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:15,720 INFO L93 Difference]: Finished difference Result 307 states and 337 transitions. [2020-11-07 00:49:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 00:49:15,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-11-07 00:49:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:15,724 INFO L225 Difference]: With dead ends: 307 [2020-11-07 00:49:15,724 INFO L226 Difference]: Without dead ends: 301 [2020-11-07 00:49:15,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-07 00:49:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-11-07 00:49:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 240. [2020-11-07 00:49:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-11-07 00:49:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 261 transitions. [2020-11-07 00:49:15,761 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 261 transitions. Word has length 52 [2020-11-07 00:49:15,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:15,763 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 261 transitions. [2020-11-07 00:49:15,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 00:49:15,764 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 261 transitions. [2020-11-07 00:49:15,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:49:15,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:15,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:15,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:49:15,767 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:15,767 INFO L82 PathProgramCache]: Analyzing trace with hash 181753930, now seen corresponding path program 1 times [2020-11-07 00:49:15,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:15,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608525623] [2020-11-07 00:49:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:16,809 WARN L194 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-11-07 00:49:16,829 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_62|], 4=[|v_#memory_int_64|, |v_#memory_$Pointer$.base_91|, |v_#memory_$Pointer$.offset_91|]} [2020-11-07 00:49:16,836 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:17,049 WARN L194 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 00:49:17,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:17,057 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:17,249 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 00:49:17,250 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:17,256 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:17,429 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 00:49:17,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:17,437 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:17,627 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:17,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:17,629 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:17,629 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-11-07 00:49:17,796 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:17,800 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:17,803 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:49:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:49:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:49:17,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608525623] [2020-11-07 00:49:17,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:49:17,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 00:49:17,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147645764] [2020-11-07 00:49:17,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 00:49:17,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:49:17,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 00:49:17,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:49:17,977 INFO L87 Difference]: Start difference. First operand 240 states and 261 transitions. Second operand 11 states. [2020-11-07 00:49:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:49:19,641 INFO L93 Difference]: Finished difference Result 305 states and 334 transitions. [2020-11-07 00:49:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 00:49:19,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-11-07 00:49:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:49:19,644 INFO L225 Difference]: With dead ends: 305 [2020-11-07 00:49:19,644 INFO L226 Difference]: Without dead ends: 299 [2020-11-07 00:49:19,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-11-07 00:49:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-07 00:49:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2020-11-07 00:49:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-07 00:49:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 268 transitions. [2020-11-07 00:49:19,688 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 268 transitions. Word has length 52 [2020-11-07 00:49:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:49:19,688 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 268 transitions. [2020-11-07 00:49:19,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 00:49:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 268 transitions. [2020-11-07 00:49:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 00:49:19,693 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:49:19,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:49:19,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 00:49:19,693 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:49:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:49:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash -236090755, now seen corresponding path program 1 times [2020-11-07 00:49:19,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:49:19,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470093919] [2020-11-07 00:49:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:49:20,936 WARN L194 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-11-07 00:49:20,944 INFO L443 ElimStorePlain]: Different costs {2=[|v_#memory_int_67|], 4=[|v_#memory_$Pointer$.base_96|, |v_#memory_$Pointer$.offset_96|, |v_#memory_int_69|]} [2020-11-07 00:49:20,953 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:21,195 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 00:49:21,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:21,204 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:21,427 WARN L194 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 00:49:21,427 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:21,433 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:21,618 WARN L194 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 00:49:21,618 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:21,626 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:21,804 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:21,805 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:49:21,806 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-07 00:49:21,806 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-11-07 00:49:21,995 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 00:49:21,999 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:49:22,002 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:49:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:49:22,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:49:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:49:22,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:49:22,143 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:49:22,143 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:49:22,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 00:49:22,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:49:22 BoogieIcfgContainer [2020-11-07 00:49:22,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:49:22,174 INFO L168 Benchmark]: Toolchain (without parser) took 24842.57 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 132.2 MB in the beginning and 180.9 MB in the end (delta: -48.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:49:22,180 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 157.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:49:22,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.63 ms. Allocated memory is still 157.3 MB. Free memory was 131.6 MB in the beginning and 138.9 MB in the end (delta: -7.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:49:22,180 INFO L168 Benchmark]: Boogie Preprocessor took 95.22 ms. Allocated memory is still 157.3 MB. Free memory was 138.9 MB in the beginning and 135.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:49:22,181 INFO L168 Benchmark]: RCFGBuilder took 1022.97 ms. Allocated memory is still 157.3 MB. Free memory was 135.3 MB in the beginning and 122.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:49:22,181 INFO L168 Benchmark]: TraceAbstraction took 22993.63 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 122.3 MB in the beginning and 180.9 MB in the end (delta: -58.6 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:49:22,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 157.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 713.63 ms. Allocated memory is still 157.3 MB. Free memory was 131.6 MB in the beginning and 138.9 MB in the end (delta: -7.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.22 ms. Allocated memory is still 157.3 MB. Free memory was 138.9 MB in the beginning and 135.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1022.97 ms. Allocated memory is still 157.3 MB. Free memory was 135.3 MB in the beginning and 122.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 64.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22993.63 ms. Allocated memory was 157.3 MB in the beginning and 272.6 MB in the end (delta: 115.3 MB). Free memory was 122.3 MB in the beginning and 180.9 MB in the end (delta: -58.6 MB). Peak memory consumption was 57.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L654] CALL inspect_before(data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L625] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "merge_sort-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 268 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.9s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1690 SDtfs, 1837 SDslu, 2961 SDs, 0 SdLazy, 4642 SolverSat, 241 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred 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: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 280 StatesRemovedByMinimization, 7 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...