/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:21:13,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:21:13,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:21:13,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:21:13,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:21:13,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:21:13,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:21:13,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:21:13,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:21:13,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:21:13,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:21:13,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:21:13,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:21:13,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:21:13,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:21:13,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:21:13,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:21:13,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:21:13,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:21:13,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:21:13,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:21:13,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:21:13,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:21:13,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:21:13,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:21:13,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:21:13,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:21:13,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:21:13,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:21:13,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:21:13,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:21:13,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:21:13,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:21:13,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:21:13,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:21:13,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:21:13,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:21:13,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:21:13,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:21:13,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:21:13,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:21:13,483 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 05:21:13,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:21:13,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:21:13,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:21:13,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:21:13,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:21:13,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:21:13,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:21:13,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:21:13,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:21:13,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:21:13,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:21:13,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:21:13,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:21:13,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:21:13,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:21:13,516 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:21:13,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:21:13,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:21:13,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:21:13,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:21:13,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:21:13,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:21:13,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:21:13,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:21:13,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:21:13,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:21:13,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:21:13,957 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:21:13,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-11-07 05:21:14,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c7bb22e/92a7854b8afa4893bad694df5425624b/FLAG707c295df [2020-11-07 05:21:14,917 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:21:14,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-11-07 05:21:14,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c7bb22e/92a7854b8afa4893bad694df5425624b/FLAG707c295df [2020-11-07 05:21:15,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c7bb22e/92a7854b8afa4893bad694df5425624b [2020-11-07 05:21:15,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:21:15,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:21:15,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:15,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:21:15,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:21:15,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4356a99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15, skipping insertion in model container [2020-11-07 05:21:15,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:21:15,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:21:15,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:15,589 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:21:15,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:21:15,704 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:21:15,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15 WrapperNode [2020-11-07 05:21:15,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:21:15,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:21:15,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:21:15,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:21:15,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (1/1) ... [2020-11-07 05:21:15,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:21:15,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:21:15,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:21:15,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:21:15,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (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 05:21:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:21:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:21:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:21:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 05:21:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 05:21:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-07 05:21:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-07 05:21:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-07 05:21:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-07 05:21:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:21:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:21:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:21:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:21:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:21:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:21:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:21:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:21:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:21:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:21:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:21:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:21:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:21:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:21:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:21:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:21:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:21:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:21:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:21:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:21:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:21:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:21:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:21:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:21:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 05:21:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 05:21:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-07 05:21:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-07 05:21:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-07 05:21:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:21:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:21:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:21:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:21:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:21:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:21:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:21:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:21:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:21:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:21:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:21:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:21:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:21:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:21:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:21:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:21:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:21:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:21:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:21:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:21:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:21:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:21:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:21:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:21:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:21:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:21:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:21:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:21:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:21:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:21:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:21:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:21:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:21:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:21:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:21:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:21:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:21:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:21:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:21:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:21:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:21:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:21:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:21:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:21:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:21:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:21:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:21:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:21:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:21:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:21:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:21:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:21:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:21:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:21:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:21:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:21:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:21:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:21:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:21:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:21:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:21:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:21:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:21:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:21:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:21:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:21:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:21:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:21:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:21:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:21:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:21:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:21:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:21:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:21:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:21:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:21:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:21:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:21:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:21:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:21:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:21:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:21:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:21:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:21:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:21:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-07 05:21:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:21:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:21:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:21:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:21:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:21:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:21:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:21:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:21:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:21:15,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:21:16,389 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-07 05:21:16,724 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:21:16,725 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 05:21:16,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:16 BoogieIcfgContainer [2020-11-07 05:21:16,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:21:16,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:21:16,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:21:16,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:21:16,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:21:15" (1/3) ... [2020-11-07 05:21:16,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d04761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:16, skipping insertion in model container [2020-11-07 05:21:16,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:21:15" (2/3) ... [2020-11-07 05:21:16,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d04761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:21:16, skipping insertion in model container [2020-11-07 05:21:16,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:21:16" (3/3) ... [2020-11-07 05:21:16,738 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-11-07 05:21:16,757 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:21:16,762 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:21:16,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:21:16,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:21:16,805 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:21:16,806 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:21:16,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:21:16,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:21:16,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:21:16,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:21:16,807 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:21:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-07 05:21:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 05:21:16,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:16,844 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] [2020-11-07 05:21:16,845 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash -656857694, now seen corresponding path program 1 times [2020-11-07 05:21:16,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:16,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076099446] [2020-11-07 05:21:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:17,208 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 05:21:17,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076099446] [2020-11-07 05:21:17,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:17,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:21:17,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13805558] [2020-11-07 05:21:17,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:21:17,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:17,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:21:17,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:21:17,246 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-11-07 05:21:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:17,550 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2020-11-07 05:21:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:21:17,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-07 05:21:17,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:17,562 INFO L225 Difference]: With dead ends: 188 [2020-11-07 05:21:17,562 INFO L226 Difference]: Without dead ends: 90 [2020-11-07 05:21:17,566 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 05:21:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-07 05:21:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-11-07 05:21:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-07 05:21:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2020-11-07 05:21:17,621 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 33 [2020-11-07 05:21:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:17,622 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2020-11-07 05:21:17,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:21:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2020-11-07 05:21:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 05:21:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:17,625 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, 1, 1] [2020-11-07 05:21:17,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:21:17,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash -892671550, now seen corresponding path program 1 times [2020-11-07 05:21:17,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936277101] [2020-11-07 05:21:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:17,745 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 05:21:17,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936277101] [2020-11-07 05:21:17,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:17,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:21:17,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021460846] [2020-11-07 05:21:17,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:21:17,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:17,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:21:17,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:21:17,750 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 5 states. [2020-11-07 05:21:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:18,039 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2020-11-07 05:21:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:21:18,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-11-07 05:21:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:18,043 INFO L225 Difference]: With dead ends: 216 [2020-11-07 05:21:18,043 INFO L226 Difference]: Without dead ends: 144 [2020-11-07 05:21:18,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:21:18,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-07 05:21:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2020-11-07 05:21:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-07 05:21:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-11-07 05:21:18,062 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 45 [2020-11-07 05:21:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:18,062 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-11-07 05:21:18,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:21:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-11-07 05:21:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 05:21:18,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:18,065 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, 1, 1, 1, 1] [2020-11-07 05:21:18,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:21:18,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash 653950565, now seen corresponding path program 1 times [2020-11-07 05:21:18,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:18,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995677389] [2020-11-07 05:21:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:21:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:21:18,228 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 05:21:18,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995677389] [2020-11-07 05:21:18,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:21:18,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:21:18,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488576645] [2020-11-07 05:21:18,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:21:18,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:21:18,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:21:18,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:21:18,231 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 5 states. [2020-11-07 05:21:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:21:18,462 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2020-11-07 05:21:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:21:18,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-07 05:21:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:21:18,465 INFO L225 Difference]: With dead ends: 169 [2020-11-07 05:21:18,465 INFO L226 Difference]: Without dead ends: 117 [2020-11-07 05:21:18,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 05:21:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-07 05:21:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2020-11-07 05:21:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-07 05:21:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-11-07 05:21:18,479 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 47 [2020-11-07 05:21:18,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:21:18,480 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-11-07 05:21:18,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:21:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-11-07 05:21:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 05:21:18,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:21:18,482 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, 1, 1, 1, 1, 1, 1] [2020-11-07 05:21:18,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:21:18,482 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:21:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:21:18,483 INFO L82 PathProgramCache]: Analyzing trace with hash 678995586, now seen corresponding path program 1 times [2020-11-07 05:21:18,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:21:18,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522416399] [2020-11-07 05:21:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:21:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:21:18,534 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:21:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:21:18,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:21:18,607 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:21:18,608 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:21:18,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:21:18,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:21:18 BoogieIcfgContainer [2020-11-07 05:21:18,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:21:18,672 INFO L168 Benchmark]: Toolchain (without parser) took 3517.55 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 63.0 MB in the end (delta: 38.3 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:18,673 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:21:18,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.85 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 78.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:18,678 INFO L168 Benchmark]: Boogie Preprocessor took 113.58 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 78.5 MB in the beginning and 140.1 MB in the end (delta: -61.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:18,679 INFO L168 Benchmark]: RCFGBuilder took 907.05 ms. Allocated memory is still 156.2 MB. Free memory was 140.1 MB in the beginning and 132.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:18,680 INFO L168 Benchmark]: TraceAbstraction took 1936.42 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 63.0 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:18,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 87.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 540.85 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 78.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.58 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 78.5 MB in the beginning and 140.1 MB in the end (delta: -61.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 907.05 ms. Allocated memory is still 156.2 MB. Free memory was 140.1 MB in the beginning and 132.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1936.42 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 63.0 MB in the end (delta: 68.8 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int i = 0; VAL [i=0] [L533] int y = 0; VAL [i=0, y=0] [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] List t; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L537] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() VAL [a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L546] y < 10 && __VERIFIER_nondet_int() VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=1] [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L554] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] i = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L557] y = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L558] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 131 SDslu, 287 SDs, 0 SdLazy, 332 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 75 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 9816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...