/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:50:21,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:50:21,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:50:21,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:50:21,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:50:21,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:50:21,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:50:21,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:50:21,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:50:21,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:50:21,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:50:21,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:50:21,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:50:21,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:50:21,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:50:21,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:50:21,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:50:21,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:50:21,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:50:21,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:50:21,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:50:21,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:50:21,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:50:21,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:50:21,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:50:21,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:50:21,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:50:21,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:50:21,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:50:21,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:50:21,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:50:21,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:50:21,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:50:21,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:50:21,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:50:21,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:50:21,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:50:21,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:50:21,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:50:21,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:50:21,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:50:21,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:50:21,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:50:21,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:50:21,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:50:21,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:50:21,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:50:21,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:50:21,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:50:21,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:50:21,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:50:21,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:50:21,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:50:21,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:50:21,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:50:21,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:50:21,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:50:21,601 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:50:21,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:50:21,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:50:21,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:50:21,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:50:21,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:50:21,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:50:21,603 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:50:22,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:50:22,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:50:22,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:50:22,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:50:22,064 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:50:22,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-11-07 00:50:22,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6bb2ed6/210be3f3bcdf465ca02fc678102e71e1/FLAGffb9f5a2b [2020-11-07 00:50:22,867 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:50:22,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2020-11-07 00:50:22,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6bb2ed6/210be3f3bcdf465ca02fc678102e71e1/FLAGffb9f5a2b [2020-11-07 00:50:23,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6bb2ed6/210be3f3bcdf465ca02fc678102e71e1 [2020-11-07 00:50:23,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:50:23,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:50:23,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:50:23,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:50:23,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:50:23,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f45a0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23, skipping insertion in model container [2020-11-07 00:50:23,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:50:23,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:50:23,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:50:23,567 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:50:23,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:50:23,699 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:50:23,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23 WrapperNode [2020-11-07 00:50:23,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:50:23,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:50:23,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:50:23,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:50:23,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... [2020-11-07 00:50:23,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:50:23,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:50:23,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:50:23,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:50:23,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:50:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:50:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:50:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:50:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 00:50:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 00:50:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-07 00:50:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-07 00:50:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-07 00:50:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-07 00:50:23,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:50:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:50:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:50:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:50:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:50:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:50:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:50:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:50:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:50:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:50:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:50:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:50:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:50:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:50:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:50:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:50:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:50:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:50:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:50:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:50:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:50:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:50:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:50:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:50:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 00:50:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 00:50:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-07 00:50:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-07 00:50:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-07 00:50:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:50:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:50:23,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:50:23,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:50:23,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:50:23,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:50:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:50:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:50:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:50:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:50:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:50:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:50:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:50:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:50:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:50:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:50:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:50:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:50:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:50:24,283 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-07 00:50:24,514 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:50:24,514 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 00:50:24,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:24 BoogieIcfgContainer [2020-11-07 00:50:24,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:50:24,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:50:24,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:50:24,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:50:24,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:23" (1/3) ... [2020-11-07 00:50:24,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f4fb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:24, skipping insertion in model container [2020-11-07 00:50:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:23" (2/3) ... [2020-11-07 00:50:24,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f4fb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:24, skipping insertion in model container [2020-11-07 00:50:24,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:24" (3/3) ... [2020-11-07 00:50:24,525 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-11-07 00:50:24,540 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:50:24,544 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:50:24,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:50:24,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:50:24,579 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:50:24,579 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:50:24,579 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:50:24,579 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:50:24,579 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:50:24,580 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:50:24,580 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:50:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-11-07 00:50:24,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 00:50:24,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:24,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:24,610 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash 325205440, now seen corresponding path program 1 times [2020-11-07 00:50:24,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:24,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670371745] [2020-11-07 00:50:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:24,733 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:25,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670371745] [2020-11-07 00:50:25,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:25,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:50:25,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940442735] [2020-11-07 00:50:25,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:50:25,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:25,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:50:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:50:25,084 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-11-07 00:50:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:25,372 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2020-11-07 00:50:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:50:25,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 00:50:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:25,384 INFO L225 Difference]: With dead ends: 150 [2020-11-07 00:50:25,384 INFO L226 Difference]: Without dead ends: 82 [2020-11-07 00:50:25,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:50:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-07 00:50:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-11-07 00:50:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-07 00:50:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-11-07 00:50:25,438 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 39 [2020-11-07 00:50:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:25,439 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-11-07 00:50:25,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:50:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-11-07 00:50:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 00:50:25,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:25,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:25,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:50:25,442 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash -322632441, now seen corresponding path program 1 times [2020-11-07 00:50:25,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:25,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600621990] [2020-11-07 00:50:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:25,450 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:25,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:25,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600621990] [2020-11-07 00:50:25,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:25,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:50:25,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903800681] [2020-11-07 00:50:25,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:50:25,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:25,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:50:25,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:50:25,654 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 6 states. [2020-11-07 00:50:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:25,948 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2020-11-07 00:50:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:50:25,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-11-07 00:50:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:25,951 INFO L225 Difference]: With dead ends: 150 [2020-11-07 00:50:25,951 INFO L226 Difference]: Without dead ends: 104 [2020-11-07 00:50:25,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:50:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-07 00:50:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2020-11-07 00:50:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-07 00:50:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-11-07 00:50:25,968 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 43 [2020-11-07 00:50:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:25,968 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-11-07 00:50:25,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:50:25,969 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-11-07 00:50:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-07 00:50:25,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:25,971 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] [2020-11-07 00:50:25,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:50:25,971 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1699669116, now seen corresponding path program 1 times [2020-11-07 00:50:25,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:25,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401525252] [2020-11-07 00:50:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:26,252 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-11-07 00:50:26,324 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:26,402 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:26,409 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:26,474 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:26,476 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:26,476 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:148, output treesize:124 [2020-11-07 00:50:26,560 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:50:26,565 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:26,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:26,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401525252] [2020-11-07 00:50:26,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:26,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:50:26,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834577866] [2020-11-07 00:50:26,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:50:26,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:50:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:50:26,652 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 4 states. [2020-11-07 00:50:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:26,897 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2020-11-07 00:50:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 00:50:26,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-11-07 00:50:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:26,902 INFO L225 Difference]: With dead ends: 195 [2020-11-07 00:50:26,902 INFO L226 Difference]: Without dead ends: 134 [2020-11-07 00:50:26,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:50:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-07 00:50:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2020-11-07 00:50:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-07 00:50:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-11-07 00:50:26,920 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 56 [2020-11-07 00:50:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:26,920 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-11-07 00:50:26,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:50:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-11-07 00:50:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-07 00:50:26,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:26,922 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] [2020-11-07 00:50:26,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:50:26,923 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:26,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:26,924 INFO L82 PathProgramCache]: Analyzing trace with hash -298314368, now seen corresponding path program 1 times [2020-11-07 00:50:26,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:26,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422858309] [2020-11-07 00:50:26,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:27,188 WARN L194 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-11-07 00:50:27,204 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:27,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:27,296 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:27,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:27,378 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:27,378 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-11-07 00:50:27,452 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:50:27,456 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422858309] [2020-11-07 00:50:27,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:27,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:50:27,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931979584] [2020-11-07 00:50:27,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:50:27,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:50:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:50:27,564 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 5 states. [2020-11-07 00:50:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:27,784 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-11-07 00:50:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:50:27,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-11-07 00:50:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:27,787 INFO L225 Difference]: With dead ends: 147 [2020-11-07 00:50:27,787 INFO L226 Difference]: Without dead ends: 126 [2020-11-07 00:50:27,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:50:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-07 00:50:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2020-11-07 00:50:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-07 00:50:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-11-07 00:50:27,800 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 56 [2020-11-07 00:50:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:27,801 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-11-07 00:50:27,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:50:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-11-07 00:50:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 00:50:27,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:27,803 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:27,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:50:27,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:27,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:27,804 INFO L82 PathProgramCache]: Analyzing trace with hash 152366671, now seen corresponding path program 1 times [2020-11-07 00:50:27,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:27,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933864312] [2020-11-07 00:50:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:28,107 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-11-07 00:50:28,132 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:28,234 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-07 00:50:28,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:28,242 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:28,310 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:28,312 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:28,312 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-11-07 00:50:28,396 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:50:28,401 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:28,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933864312] [2020-11-07 00:50:28,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:28,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 00:50:28,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294655533] [2020-11-07 00:50:28,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 00:50:28,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:28,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 00:50:28,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:50:28,496 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 5 states. [2020-11-07 00:50:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:28,712 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-11-07 00:50:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:50:28,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-11-07 00:50:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:28,715 INFO L225 Difference]: With dead ends: 152 [2020-11-07 00:50:28,715 INFO L226 Difference]: Without dead ends: 135 [2020-11-07 00:50:28,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:50:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-07 00:50:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-11-07 00:50:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-07 00:50:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2020-11-07 00:50:28,756 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 58 [2020-11-07 00:50:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:28,760 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2020-11-07 00:50:28,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 00:50:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2020-11-07 00:50:28,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 00:50:28,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:28,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:28,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:50:28,765 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:28,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1310006761, now seen corresponding path program 1 times [2020-11-07 00:50:28,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:28,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099618656] [2020-11-07 00:50:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:29,025 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-11-07 00:50:29,048 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:29,142 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:29,156 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:29,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:50:29,233 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-07 00:50:29,233 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:149, output treesize:125 [2020-11-07 00:50:29,326 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:50:29,330 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:50:29,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:50:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:50:29,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:50:29,513 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:50:29,513 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:50:29,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:50:29,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:50:29 BoogieIcfgContainer [2020-11-07 00:50:29,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:50:29,552 INFO L168 Benchmark]: Toolchain (without parser) took 6384.01 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.8 MB in the beginning and 104.1 MB in the end (delta: 27.7 MB). Peak memory consumption was 60.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:29,555 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:50:29,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 109.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:29,564 INFO L168 Benchmark]: Boogie Preprocessor took 117.82 ms. Allocated memory is still 156.2 MB. Free memory was 109.0 MB in the beginning and 138.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:29,565 INFO L168 Benchmark]: RCFGBuilder took 696.96 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 134.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:29,566 INFO L168 Benchmark]: TraceAbstraction took 5030.35 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.4 MB in the beginning and 104.1 MB in the end (delta: 29.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:29,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 525.45 ms. Allocated memory is still 156.2 MB. Free memory was 131.1 MB in the beginning and 109.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.82 ms. Allocated memory is still 156.2 MB. Free memory was 109.0 MB in the beginning and 138.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 696.96 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 134.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5030.35 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.4 MB in the beginning and 104.1 MB in the end (delta: 29.4 MB). Peak memory consumption was 60.8 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: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 133 SDslu, 552 SDs, 0 SdLazy, 582 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 73 StatesRemovedByMinimization, 4 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...