/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-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:02:50,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:02:50,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:02:50,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:02:50,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:02:50,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:02:50,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:02:50,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:02:50,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:02:50,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:02:50,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:02:50,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:02:50,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:02:50,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:02:50,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:02:50,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:02:50,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:02:50,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:02:50,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:02:50,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:02:50,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:02:50,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:02:50,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:02:50,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:02:50,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 01:02:50,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 01:02:50,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 01:02:50,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 01:02:50,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 01:02:50,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 01:02:50,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 01:02:50,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 01:02:50,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 01:02:50,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 01:02:50,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 01:02:50,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 01:02:50,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 01:02:50,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 01:02:50,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:02:50,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:02:50,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:02:50,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:02:50,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:02:50,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:02:50,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:02:50,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:02:50,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:02:50,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:02:50,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:02:50,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:02:50,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:02:50,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:02:50,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:02:50,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:02:50,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:02:50,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:02:50,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:02:50,695 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:02:50,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:02:50,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:02:50,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:02:50,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:02:50,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:02:50,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:02:50,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:02:51,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:02:51,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:02:51,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:02:51,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:02:51,181 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:02:51,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-24 01:02:51,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdbaa0fe/b6e9db39474844e2bc7633e48377b5a3/FLAG88d9578f9 [2020-10-24 01:02:51,963 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:02:51,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-24 01:02:51,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdbaa0fe/b6e9db39474844e2bc7633e48377b5a3/FLAG88d9578f9 [2020-10-24 01:02:52,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdbaa0fe/b6e9db39474844e2bc7633e48377b5a3 [2020-10-24 01:02:52,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:02:52,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:02:52,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:02:52,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:02:52,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:02:52,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:52,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2da4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52, skipping insertion in model container [2020-10-24 01:02:52,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:52,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:02:52,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:02:52,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:02:52,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:02:52,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:02:52,923 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:02:52,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52 WrapperNode [2020-10-24 01:02:52,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:02:52,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:02:52,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:02:52,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:02:52,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:52,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:53,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:53,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:53,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:53,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:53,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... [2020-10-24 01:02:53,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:02:53,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:02:53,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:02:53,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:02:53,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:02:53,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:02:53,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:02:53,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:02:53,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-24 01:02:53,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-24 01:02:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-24 01:02:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-24 01:02:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-24 01:02:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-24 01:02:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:02:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:02:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:02:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 01:02:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 01:02:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:02:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:02:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:02:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-24 01:02:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-24 01:02:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-24 01:02:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-24 01:02:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-24 01:02:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-24 01:02:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-24 01:02:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-24 01:02:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-24 01:02:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-24 01:02:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-24 01:02:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-24 01:02:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-24 01:02:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-24 01:02:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-24 01:02:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-24 01:02:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-24 01:02:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-24 01:02:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-24 01:02:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-24 01:02:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-24 01:02:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-24 01:02:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-24 01:02:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-24 01:02:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-24 01:02:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-24 01:02:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-24 01:02:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-24 01:02:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-24 01:02:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-24 01:02:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-24 01:02:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-24 01:02:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-24 01:02:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-24 01:02:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-24 01:02:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-24 01:02:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-24 01:02:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-24 01:02:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-24 01:02:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-24 01:02:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-24 01:02:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-24 01:02:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-24 01:02:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-24 01:02:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-24 01:02:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-24 01:02:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-24 01:02:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-24 01:02:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-24 01:02:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-24 01:02:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-24 01:02:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-24 01:02:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-24 01:02:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-24 01:02:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-24 01:02:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 01:02:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-24 01:02:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-24 01:02:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-24 01:02:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-24 01:02:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-24 01:02:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-24 01:02:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-24 01:02:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-24 01:02:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-24 01:02:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-24 01:02:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:02:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-24 01:02:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-24 01:02:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-24 01:02:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-24 01:02:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-24 01:02:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-24 01:02:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-24 01:02:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-24 01:02:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-24 01:02:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-24 01:02:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-24 01:02:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-24 01:02:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-24 01:02:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-24 01:02:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-24 01:02:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-24 01:02:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-24 01:02:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-24 01:02:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-24 01:02:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-24 01:02:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-24 01:02:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-24 01:02:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-24 01:02:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-24 01:02:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-24 01:02:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-24 01:02:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-24 01:02:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-24 01:02:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-24 01:02:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-24 01:02:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-24 01:02:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-24 01:02:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-24 01:02:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-24 01:02:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-24 01:02:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-24 01:02:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-24 01:02:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-24 01:02:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-24 01:02:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-24 01:02:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:02:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 01:02:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:02:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-24 01:02:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-24 01:02:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:02:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:02:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:02:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:02:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:02:53,800 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-24 01:02:54,010 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:02:54,011 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-24 01:02:54,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:02:54 BoogieIcfgContainer [2020-10-24 01:02:54,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:02:54,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:02:54,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:02:54,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:02:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:02:52" (1/3) ... [2020-10-24 01:02:54,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b34e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:02:54, skipping insertion in model container [2020-10-24 01:02:54,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:02:52" (2/3) ... [2020-10-24 01:02:54,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b34e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:02:54, skipping insertion in model container [2020-10-24 01:02:54,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:02:54" (3/3) ... [2020-10-24 01:02:54,023 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-24 01:02:54,035 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:02:54,042 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:02:54,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:02:54,081 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:02:54,082 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:02:54,082 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:02:54,082 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:02:54,082 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:02:54,082 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:02:54,083 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:02:54,083 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:02:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-24 01:02:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 01:02:54,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:54,111 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] [2020-10-24 01:02:54,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:54,118 INFO L82 PathProgramCache]: Analyzing trace with hash 193386265, now seen corresponding path program 1 times [2020-10-24 01:02:54,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:54,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195762673] [2020-10-24 01:02:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:02:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195762673] [2020-10-24 01:02:54,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:02:54,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 01:02:54,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259115926] [2020-10-24 01:02:54,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 01:02:54,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:54,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 01:02:54,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:02:54,395 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-10-24 01:02:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:54,563 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2020-10-24 01:02:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 01:02:54,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-24 01:02:54,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:54,574 INFO L225 Difference]: With dead ends: 101 [2020-10-24 01:02:54,574 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 01:02:54,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:02:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 01:02:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-24 01:02:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-24 01:02:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-24 01:02:54,628 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 32 [2020-10-24 01:02:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:54,629 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-24 01:02:54,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 01:02:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-24 01:02:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-24 01:02:54,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:54,631 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] [2020-10-24 01:02:54,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:02:54,631 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:54,632 INFO L82 PathProgramCache]: Analyzing trace with hash 116865489, now seen corresponding path program 1 times [2020-10-24 01:02:54,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:54,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448652213] [2020-10-24 01:02:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:02:54,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448652213] [2020-10-24 01:02:54,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:02:54,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:02:54,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236617980] [2020-10-24 01:02:54,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:02:54,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:02:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:02:54,833 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 7 states. [2020-10-24 01:02:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:55,263 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2020-10-24 01:02:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 01:02:55,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-24 01:02:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:55,268 INFO L225 Difference]: With dead ends: 128 [2020-10-24 01:02:55,268 INFO L226 Difference]: Without dead ends: 119 [2020-10-24 01:02:55,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:02:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-24 01:02:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 69. [2020-10-24 01:02:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-24 01:02:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-24 01:02:55,290 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 36 [2020-10-24 01:02:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:55,291 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-24 01:02:55,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:02:55,291 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-24 01:02:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 01:02:55,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:55,294 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] [2020-10-24 01:02:55,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:02:55,294 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:55,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1324191625, now seen corresponding path program 1 times [2020-10-24 01:02:55,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:55,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632562686] [2020-10-24 01:02:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:02:55,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632562686] [2020-10-24 01:02:55,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:02:55,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:02:55,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454664724] [2020-10-24 01:02:55,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:02:55,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:55,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:02:55,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:02:55,529 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 7 states. [2020-10-24 01:02:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:55,826 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-10-24 01:02:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 01:02:55,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-24 01:02:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:55,829 INFO L225 Difference]: With dead ends: 123 [2020-10-24 01:02:55,829 INFO L226 Difference]: Without dead ends: 107 [2020-10-24 01:02:55,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:02:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-24 01:02:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 67. [2020-10-24 01:02:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-24 01:02:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-24 01:02:55,844 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 42 [2020-10-24 01:02:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:55,845 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-24 01:02:55,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:02:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-24 01:02:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-24 01:02:55,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:55,847 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] [2020-10-24 01:02:55,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:02:55,847 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:55,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1634728969, now seen corresponding path program 1 times [2020-10-24 01:02:55,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:55,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288861078] [2020-10-24 01:02:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:02:56,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288861078] [2020-10-24 01:02:56,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:02:56,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:02:56,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572274253] [2020-10-24 01:02:56,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:02:56,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:56,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:02:56,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:02:56,078 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-10-24 01:02:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:56,375 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-24 01:02:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 01:02:56,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-24 01:02:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:56,377 INFO L225 Difference]: With dead ends: 107 [2020-10-24 01:02:56,378 INFO L226 Difference]: Without dead ends: 87 [2020-10-24 01:02:56,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:02:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-24 01:02:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 61. [2020-10-24 01:02:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-24 01:02:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-24 01:02:56,389 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 42 [2020-10-24 01:02:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:56,389 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-24 01:02:56,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:02:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-24 01:02:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-24 01:02:56,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:56,392 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:02:56,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:02:56,392 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash 537702587, now seen corresponding path program 1 times [2020-10-24 01:02:56,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:56,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667157467] [2020-10-24 01:02:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:02:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:02:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:02:56,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667157467] [2020-10-24 01:02:56,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:02:56,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:02:56,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75364808] [2020-10-24 01:02:56,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:02:56,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:02:56,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:02:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:02:56,519 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 4 states. [2020-10-24 01:02:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:02:56,659 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-10-24 01:02:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 01:02:56,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-24 01:02:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:02:56,661 INFO L225 Difference]: With dead ends: 118 [2020-10-24 01:02:56,661 INFO L226 Difference]: Without dead ends: 80 [2020-10-24 01:02:56,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:02:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-24 01:02:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-24 01:02:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-24 01:02:56,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-10-24 01:02:56,674 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 48 [2020-10-24 01:02:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:02:56,674 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-10-24 01:02:56,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:02:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-10-24 01:02:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-24 01:02:56,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:02:56,677 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:02:56,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:02:56,677 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:02:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:02:56,678 INFO L82 PathProgramCache]: Analyzing trace with hash 179721659, now seen corresponding path program 1 times [2020-10-24 01:02:56,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:02:56,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069817658] [2020-10-24 01:02:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:02:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:02:56,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:02:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:02:56,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:02:56,818 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 01:02:56,819 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 01:02:56,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:02:56,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:02:56 BoogieIcfgContainer [2020-10-24 01:02:56,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:02:56,878 INFO L168 Benchmark]: Toolchain (without parser) took 4584.68 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 140.4 MB in the beginning and 92.9 MB in the end (delta: 47.4 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. [2020-10-24 01:02:56,879 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:02:56,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.93 ms. Allocated memory is still 164.6 MB. Free memory was 139.7 MB in the beginning and 118.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:02:56,881 INFO L168 Benchmark]: Boogie Preprocessor took 174.43 ms. Allocated memory is still 164.6 MB. Free memory was 118.1 MB in the beginning and 146.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:02:56,882 INFO L168 Benchmark]: RCFGBuilder took 909.18 ms. Allocated memory is still 164.6 MB. Free memory was 146.0 MB in the beginning and 144.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 46.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:02:56,883 INFO L168 Benchmark]: TraceAbstraction took 2860.55 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 143.9 MB in the beginning and 92.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2020-10-24 01:02:56,887 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 96.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 616.93 ms. Allocated memory is still 164.6 MB. Free memory was 139.7 MB in the beginning and 118.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 174.43 ms. Allocated memory is still 164.6 MB. Free memory was 118.1 MB in the beginning and 146.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 909.18 ms. Allocated memory is still 164.6 MB. Free memory was 146.0 MB in the beginning and 144.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 46.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2860.55 ms. Allocated memory was 164.6 MB in the beginning and 198.2 MB in the end (delta: 33.6 MB). Free memory was 143.9 MB in the beginning and 92.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 83.9 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 = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, flag=0] [L533] List p, a, t; VAL [flag=0] [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L536] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] p->h = 2 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L543] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L544] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L545] p->n = t VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L546] EXPR p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->n={-2:0}, t={-2:0}] [L546] p = p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, p->n={-2:0}, t={-2:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L548] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-2:0}] [L549] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=2, t={-2:0}] [L554] COND FALSE !(p->h == 1) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=2, t={-2:0}] [L556] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=2, t={-2:0}] [L556] COND TRUE p->h != 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=2, t={-2:0}] [L557] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_flag-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 242 SDslu, 531 SDs, 0 SdLazy, 621 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 120 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 19531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...