/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-b8ad66e [2020-10-23 20:32:33,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:32:33,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:32:33,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:32:33,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:32:33,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:32:33,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:32:33,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:32:33,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:32:33,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:32:33,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:32:33,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:32:33,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:32:33,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:32:33,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:32:33,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:32:33,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:32:33,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:32:33,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:32:33,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:32:33,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:32:33,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:32:33,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:32:33,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:32:33,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:32:33,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:32:33,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:32:33,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:32:33,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:32:33,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:32:33,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:32:33,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:32:33,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:32:33,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:32:33,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:32:33,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:32:33,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:32:33,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:32:33,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:32:33,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:32:33,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:32:33,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:32:33,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:32:33,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:32:33,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:32:33,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:32:33,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:32:33,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:32:33,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:32:33,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:32:33,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:32:33,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:32:33,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:32:33,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:32:33,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:32:33,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:32:33,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:32:33,595 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:32:33,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:32:33,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:32:33,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:32:33,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:32:33,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:32:33,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:32:33,596 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:32:33,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:32:34,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:32:34,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:32:34,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:32:34,059 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:32:34,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-10-23 20:32:34,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918a291dd/41eb232d4b304062a691abad3cdb063a/FLAG47719ee0a [2020-10-23 20:32:34,856 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:32:34,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-10-23 20:32:34,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918a291dd/41eb232d4b304062a691abad3cdb063a/FLAG47719ee0a [2020-10-23 20:32:35,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918a291dd/41eb232d4b304062a691abad3cdb063a [2020-10-23 20:32:35,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:32:35,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:32:35,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:32:35,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:32:35,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:32:35,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1215524d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35, skipping insertion in model container [2020-10-23 20:32:35,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:32:35,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:32:35,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:32:35,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:32:35,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:32:35,767 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:32:35,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35 WrapperNode [2020-10-23 20:32:35,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:32:35,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:32:35,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:32:35,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:32:35,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... [2020-10-23 20:32:35,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:32:35,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:32:35,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:32:35,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:32:35,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:32:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:32:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:32:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:32:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 20:32:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 20:32:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-23 20:32:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-10-23 20:32:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-10-23 20:32:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-10-23 20:32:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-10-23 20:32:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-10-23 20:32:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:32:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:32:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:32:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:32:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:32:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:32:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:32:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 20:32:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 20:32:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:32:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:32:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:32:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:32:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:32:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:32:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:32:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:32:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:32:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:32:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:32:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:32:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:32:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:32:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:32:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:32:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:32:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:32:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:32:35,981 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:32:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:32:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:32:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:32:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:32:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:32:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:32:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:32:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:32:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:32:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:32:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:32:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:32:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:32:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:32:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:32:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:32:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:32:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:32:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:32:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:32:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:32:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:32:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:32:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:32:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:32:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:32:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:32:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:32:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:32:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:32:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:32:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:32:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:32:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:32:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:32:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:32:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:32:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:32:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:32:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:32:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:32:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-23 20:32:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-10-23 20:32:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:32:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:32:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-10-23 20:32:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:32:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:32:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-10-23 20:32:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-10-23 20:32:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-10-23 20:32:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:32:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:32:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:32:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:32:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:32:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:32:37,030 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:32:37,031 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-23 20:32:37,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:32:37 BoogieIcfgContainer [2020-10-23 20:32:37,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:32:37,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:32:37,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:32:37,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:32:37,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:32:35" (1/3) ... [2020-10-23 20:32:37,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465bb84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:32:37, skipping insertion in model container [2020-10-23 20:32:37,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:32:35" (2/3) ... [2020-10-23 20:32:37,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465bb84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:32:37, skipping insertion in model container [2020-10-23 20:32:37,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:32:37" (3/3) ... [2020-10-23 20:32:37,043 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-10-23 20:32:37,055 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:32:37,064 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:32:37,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:32:37,103 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:32:37,103 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:32:37,103 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:32:37,104 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:32:37,104 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:32:37,104 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:32:37,104 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:32:37,104 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:32:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-23 20:32:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 20:32:37,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:37,138 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] [2020-10-23 20:32:37,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:37,146 INFO L82 PathProgramCache]: Analyzing trace with hash 946346925, now seen corresponding path program 1 times [2020-10-23 20:32:37,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:37,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393678841] [2020-10-23 20:32:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:37,255 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:32:37,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393678841] [2020-10-23 20:32:37,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:37,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:32:37,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369657531] [2020-10-23 20:32:37,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:32:37,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:32:37,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:32:37,554 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 3 states. [2020-10-23 20:32:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:38,214 INFO L93 Difference]: Finished difference Result 533 states and 704 transitions. [2020-10-23 20:32:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:32:38,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-23 20:32:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:38,234 INFO L225 Difference]: With dead ends: 533 [2020-10-23 20:32:38,234 INFO L226 Difference]: Without dead ends: 258 [2020-10-23 20:32:38,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:32:38,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-23 20:32:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 230. [2020-10-23 20:32:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-23 20:32:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 253 transitions. [2020-10-23 20:32:38,365 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 253 transitions. Word has length 21 [2020-10-23 20:32:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:38,366 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 253 transitions. [2020-10-23 20:32:38,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:32:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 253 transitions. [2020-10-23 20:32:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 20:32:38,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:38,369 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] [2020-10-23 20:32:38,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:32:38,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:38,371 INFO L82 PathProgramCache]: Analyzing trace with hash -262869876, now seen corresponding path program 1 times [2020-10-23 20:32:38,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:38,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383916200] [2020-10-23 20:32:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:38,390 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:38,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:32:38,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383916200] [2020-10-23 20:32:38,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:38,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:32:38,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394729451] [2020-10-23 20:32:38,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:32:38,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:38,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:32:38,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:32:38,525 INFO L87 Difference]: Start difference. First operand 230 states and 253 transitions. Second operand 4 states. [2020-10-23 20:32:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:39,128 INFO L93 Difference]: Finished difference Result 461 states and 510 transitions. [2020-10-23 20:32:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:32:39,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-23 20:32:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:39,133 INFO L225 Difference]: With dead ends: 461 [2020-10-23 20:32:39,134 INFO L226 Difference]: Without dead ends: 259 [2020-10-23 20:32:39,136 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 [2020-10-23 20:32:39,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-23 20:32:39,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 232. [2020-10-23 20:32:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-23 20:32:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 255 transitions. [2020-10-23 20:32:39,170 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 255 transitions. Word has length 23 [2020-10-23 20:32:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:39,170 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 255 transitions. [2020-10-23 20:32:39,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:32:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 255 transitions. [2020-10-23 20:32:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 20:32:39,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:39,172 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] [2020-10-23 20:32:39,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:32:39,172 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:39,173 INFO L82 PathProgramCache]: Analyzing trace with hash 981297497, now seen corresponding path program 1 times [2020-10-23 20:32:39,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:39,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694153221] [2020-10-23 20:32:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:40,481 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-10-23 20:32:40,557 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 4=[|v_#memory_int_44|, |v_#memory_$Pointer$.base_71|, |v_#memory_$Pointer$.offset_71|]} [2020-10-23 20:32:40,579 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:40,887 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-23 20:32:40,889 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:40,915 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:41,127 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-23 20:32:41,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:41,158 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:41,329 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:32:41,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:41,353 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:41,556 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:41,559 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:41,565 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:41,565 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:41,755 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:43,288 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-10-23 20:32:43,314 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_47|], 4=[|v_#memory_$Pointer$.base_76|, |v_#memory_$Pointer$.offset_76|, |v_#memory_int_49|]} [2020-10-23 20:32:43,330 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:43,503 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-23 20:32:43,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:43,517 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:43,735 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:32:43,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:43,749 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:43,911 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-23 20:32:43,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:43,921 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:44,085 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:32:44,085 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:44,091 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:44,091 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:44,247 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:32:44,261 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:32:44,266 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:32:44,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694153221] [2020-10-23 20:32:44,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:44,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:32:44,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802051363] [2020-10-23 20:32:44,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:32:44,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:44,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:32:44,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:32:44,464 INFO L87 Difference]: Start difference. First operand 232 states and 255 transitions. Second operand 8 states. [2020-10-23 20:32:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:45,789 INFO L93 Difference]: Finished difference Result 326 states and 363 transitions. [2020-10-23 20:32:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 20:32:45,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-23 20:32:45,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:45,793 INFO L225 Difference]: With dead ends: 326 [2020-10-23 20:32:45,794 INFO L226 Difference]: Without dead ends: 319 [2020-10-23 20:32:45,794 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 [2020-10-23 20:32:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-23 20:32:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 237. [2020-10-23 20:32:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-23 20:32:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2020-10-23 20:32:45,839 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 39 [2020-10-23 20:32:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:45,840 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2020-10-23 20:32:45,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:32:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2020-10-23 20:32:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:32:45,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:45,842 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:32:45,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:32:45,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1272473326, now seen corresponding path program 1 times [2020-10-23 20:32:45,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:45,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000399382] [2020-10-23 20:32:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:46,887 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-10-23 20:32:46,906 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_52|], 4=[|v_#memory_int_54|, |v_#memory_$Pointer$.base_81|, |v_#memory_$Pointer$.offset_81|]} [2020-10-23 20:32:46,914 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:47,122 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-23 20:32:47,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:47,134 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:47,318 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-23 20:32:47,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:47,327 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:47,500 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:32:47,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:47,512 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:47,691 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:47,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:47,694 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:47,694 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:47,863 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:48,746 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-10-23 20:32:48,764 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_57|], 4=[|v_#memory_$Pointer$.base_86|, |v_#memory_$Pointer$.offset_86|, |v_#memory_int_59|]} [2020-10-23 20:32:48,772 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:48,954 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-23 20:32:48,955 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:48,961 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:49,175 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:32:49,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:49,182 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:49,390 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-23 20:32:49,391 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:49,396 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:49,556 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:32:49,557 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:49,559 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:49,559 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:49,742 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:32:49,747 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:32:49,750 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:32:49,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000399382] [2020-10-23 20:32:49,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:49,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:32:49,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370902473] [2020-10-23 20:32:49,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:32:49,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:49,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:32:49,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:32:49,870 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand 6 states. [2020-10-23 20:32:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:50,906 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2020-10-23 20:32:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:32:50,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-23 20:32:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:50,909 INFO L225 Difference]: With dead ends: 256 [2020-10-23 20:32:50,909 INFO L226 Difference]: Without dead ends: 250 [2020-10-23 20:32:50,910 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 [2020-10-23 20:32:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-23 20:32:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 235. [2020-10-23 20:32:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-23 20:32:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2020-10-23 20:32:50,945 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 48 [2020-10-23 20:32:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:50,946 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2020-10-23 20:32:50,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:32:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2020-10-23 20:32:50,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 20:32:50,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:50,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:32:50,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:32:50,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:50,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:50,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1591518012, now seen corresponding path program 1 times [2020-10-23 20:32:50,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:50,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736167679] [2020-10-23 20:32:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:51,991 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-10-23 20:32:52,003 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_62|], 4=[|v_#memory_int_64|, |v_#memory_$Pointer$.base_91|, |v_#memory_$Pointer$.offset_91|]} [2020-10-23 20:32:52,014 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:52,227 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-23 20:32:52,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:52,233 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:52,426 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-23 20:32:52,427 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:52,434 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:52,628 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:32:52,628 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:52,636 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:52,826 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:52,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:52,828 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:52,829 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:53,026 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:54,235 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-10-23 20:32:54,245 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_67|], 4=[|v_#memory_$Pointer$.base_96|, |v_#memory_$Pointer$.offset_96|, |v_#memory_int_69|]} [2020-10-23 20:32:54,251 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:54,470 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-23 20:32:54,470 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:54,479 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:54,671 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:32:54,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:54,677 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:54,867 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-23 20:32:54,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:54,873 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:55,054 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:32:55,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:55,056 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:55,057 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:55,226 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:32:55,231 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:32:55,234 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:32:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:32:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:32:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:32:55,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736167679] [2020-10-23 20:32:55,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:32:55,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:32:55,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351430017] [2020-10-23 20:32:55,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:32:55,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:32:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:32:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:32:55,378 INFO L87 Difference]: Start difference. First operand 235 states and 257 transitions. Second operand 6 states. [2020-10-23 20:32:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:32:56,331 INFO L93 Difference]: Finished difference Result 254 states and 278 transitions. [2020-10-23 20:32:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:32:56,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-23 20:32:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:32:56,337 INFO L225 Difference]: With dead ends: 254 [2020-10-23 20:32:56,337 INFO L226 Difference]: Without dead ends: 248 [2020-10-23 20:32:56,338 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 [2020-10-23 20:32:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-23 20:32:56,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2020-10-23 20:32:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-23 20:32:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 254 transitions. [2020-10-23 20:32:56,370 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 254 transitions. Word has length 48 [2020-10-23 20:32:56,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:32:56,372 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 254 transitions. [2020-10-23 20:32:56,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:32:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 254 transitions. [2020-10-23 20:32:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-23 20:32:56,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:32:56,384 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] [2020-10-23 20:32:56,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:32:56,384 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:32:56,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:32:56,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1804582388, now seen corresponding path program 1 times [2020-10-23 20:32:56,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:32:56,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431399345] [2020-10-23 20:32:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:32:57,545 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-10-23 20:32:57,556 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_72|], 4=[|v_#memory_int_74|, |v_#memory_$Pointer$.base_101|, |v_#memory_$Pointer$.offset_101|]} [2020-10-23 20:32:57,563 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:57,766 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-23 20:32:57,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:57,773 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:57,937 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-23 20:32:57,938 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:57,945 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:58,122 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:32:58,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:58,130 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:58,281 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:58,282 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:58,284 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:58,284 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:32:58,448 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:32:59,560 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-10-23 20:32:59,577 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_77|], 4=[|v_#memory_$Pointer$.offset_106|, |v_#memory_int_79|, |v_#memory_$Pointer$.base_106|]} [2020-10-23 20:32:59,584 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:32:59,827 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-23 20:32:59,828 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:32:59,834 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:00,040 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:33:00,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:00,047 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:00,231 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:33:00,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:00,238 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:00,386 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:33:00,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:00,388 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:00,388 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:33:00,520 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:33:00,525 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:00,528 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:00,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:00,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431399345] [2020-10-23 20:33:00,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:00,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:33:00,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747919909] [2020-10-23 20:33:00,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:33:00,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:00,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:33:00,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:33:00,734 INFO L87 Difference]: Start difference. First operand 233 states and 254 transitions. Second operand 11 states. [2020-10-23 20:33:02,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:02,387 INFO L93 Difference]: Finished difference Result 307 states and 337 transitions. [2020-10-23 20:33:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:33:02,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-23 20:33:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:02,394 INFO L225 Difference]: With dead ends: 307 [2020-10-23 20:33:02,395 INFO L226 Difference]: Without dead ends: 301 [2020-10-23 20:33:02,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:33:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-23 20:33:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 240. [2020-10-23 20:33:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-23 20:33:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 261 transitions. [2020-10-23 20:33:02,432 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 261 transitions. Word has length 52 [2020-10-23 20:33:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:02,432 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 261 transitions. [2020-10-23 20:33:02,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:33:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 261 transitions. [2020-10-23 20:33:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-23 20:33:02,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:02,437 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] [2020-10-23 20:33:02,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:33:02,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 181753930, now seen corresponding path program 1 times [2020-10-23 20:33:02,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:02,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959400233] [2020-10-23 20:33:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:03,508 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-10-23 20:33:03,526 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_82|], 4=[|v_#memory_int_84|, |v_#memory_$Pointer$.offset_111|, |v_#memory_$Pointer$.base_111|]} [2020-10-23 20:33:03,535 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:03,766 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-23 20:33:03,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:03,784 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:03,990 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-23 20:33:03,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:04,008 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:04,195 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-23 20:33:04,195 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:04,201 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:04,378 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:33:04,378 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:04,379 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:04,379 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:33:04,559 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:33:05,651 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-10-23 20:33:05,657 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_87|], 4=[|v_#memory_$Pointer$.offset_116|, |v_#memory_int_89|, |v_#memory_$Pointer$.base_116|]} [2020-10-23 20:33:05,663 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:05,893 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-23 20:33:05,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:05,901 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:06,121 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:33:06,122 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:06,128 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:06,315 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:33:06,316 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:06,322 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:06,470 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:33:06,471 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:06,472 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:06,473 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:33:06,611 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:33:06,615 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:06,618 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:06,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959400233] [2020-10-23 20:33:06,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:06,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:33:06,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198700189] [2020-10-23 20:33:06,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:33:06,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:33:06,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:33:06,796 INFO L87 Difference]: Start difference. First operand 240 states and 261 transitions. Second operand 11 states. [2020-10-23 20:33:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:08,436 INFO L93 Difference]: Finished difference Result 305 states and 334 transitions. [2020-10-23 20:33:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:33:08,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-23 20:33:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:08,440 INFO L225 Difference]: With dead ends: 305 [2020-10-23 20:33:08,440 INFO L226 Difference]: Without dead ends: 299 [2020-10-23 20:33:08,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:33:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-23 20:33:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2020-10-23 20:33:08,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-23 20:33:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 268 transitions. [2020-10-23 20:33:08,474 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 268 transitions. Word has length 52 [2020-10-23 20:33:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:08,475 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 268 transitions. [2020-10-23 20:33:08,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:33:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 268 transitions. [2020-10-23 20:33:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:33:08,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:08,476 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] [2020-10-23 20:33:08,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:33:08,476 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash -236090755, now seen corresponding path program 1 times [2020-10-23 20:33:08,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:08,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018928837] [2020-10-23 20:33:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:09,929 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 145 DAG size of output: 135 [2020-10-23 20:33:09,940 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_92|], 4=[|v_#memory_$Pointer$.offset_121|, |v_#memory_$Pointer$.base_121|, |v_#memory_int_94|]} [2020-10-23 20:33:09,948 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,204 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-23 20:33:10,204 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,216 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,454 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-23 20:33:10,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,465 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,707 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:33:10,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,720 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,874 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:33:10,874 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:10,876 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:10,876 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:33:11,037 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-23 20:33:12,283 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 146 DAG size of output: 136 [2020-10-23 20:33:12,294 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_97|], 4=[|v_#memory_$Pointer$.offset_126|, |v_#memory_int_99|, |v_#memory_$Pointer$.base_126|]} [2020-10-23 20:33:12,304 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:12,635 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-23 20:33:12,635 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:12,642 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:12,917 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-23 20:33:12,917 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:12,925 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:13,100 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-23 20:33:13,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:13,107 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:13,269 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:33:13,269 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:33:13,271 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-23 20:33:13,271 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:235, output treesize:222 [2020-10-23 20:33:13,425 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-23 20:33:13,428 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:33:13,432 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:13,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:13,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:13,527 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:33:13,528 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:33:13,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:33:13,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:33:13 BoogieIcfgContainer [2020-10-23 20:33:13,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:33:13,559 INFO L168 Benchmark]: Toolchain (without parser) took 38416.94 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 126.9 MB in the beginning and 108.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 87.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:13,560 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 151.0 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:33:13,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 133.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:13,567 INFO L168 Benchmark]: Boogie Preprocessor took 95.50 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 130.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:13,567 INFO L168 Benchmark]: RCFGBuilder took 1168.41 ms. Allocated memory is still 151.0 MB. Free memory was 129.8 MB in the beginning and 115.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:13,570 INFO L168 Benchmark]: TraceAbstraction took 36515.62 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 114.8 MB in the beginning and 108.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 73.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:13,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 151.0 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 626.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 133.8 MB in the end (delta: -7.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.50 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 130.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1168.41 ms. Allocated memory is still 151.0 MB. Free memory was 129.8 MB in the beginning and 115.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 36515.62 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 114.8 MB in the beginning and 108.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 73.6 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: 36.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 7.9s, 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, 4.9s 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...