/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/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:15:14,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:15:14,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:15:15,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:15:15,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:15:15,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:15:15,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:15:15,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:15:15,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:15:15,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:15:15,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:15:15,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:15:15,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:15:15,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:15:15,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:15:15,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:15:15,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:15:15,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:15:15,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:15:15,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:15:15,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:15:15,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:15:15,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:15:15,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:15:15,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:15:15,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:15:15,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:15:15,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:15:15,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:15:15,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:15:15,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:15:15,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:15:15,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:15:15,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:15:15,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:15:15,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:15:15,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:15:15,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:15:15,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:15:15,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:15:15,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:15:15,164 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 05:15:15,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:15:15,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:15:15,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:15:15,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:15:15,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:15:15,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:15:15,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:15:15,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:15:15,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:15:15,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:15:15,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:15:15,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:15:15,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:15:15,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:15:15,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:15:15,208 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:15:15,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:15:15,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:15:15,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:15:15,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:15:15,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:15:15,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:15:15,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:15:15,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:15:15,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:15:15,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:15:15,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:15:15,812 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:15:15,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-11-07 05:15:15,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf5b513f/b3db0324c03d469bb565e790ab8188fa/FLAG4085e8af5 [2020-11-07 05:15:16,850 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:15:16,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2020-11-07 05:15:16,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf5b513f/b3db0324c03d469bb565e790ab8188fa/FLAG4085e8af5 [2020-11-07 05:15:17,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf5b513f/b3db0324c03d469bb565e790ab8188fa [2020-11-07 05:15:17,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:15:17,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:15:17,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:15:17,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:15:17,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:15:17,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:17,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c02bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17, skipping insertion in model container [2020-11-07 05:15:17,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:17,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:15:17,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:15:17,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:15:17,686 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:15:17,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:15:17,887 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:15:17,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17 WrapperNode [2020-11-07 05:15:17,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:15:17,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:15:17,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:15:17,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:15:17,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:17,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:17,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:17,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:18,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:18,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:18,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (1/1) ... [2020-11-07 05:15:18,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:15:18,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:15:18,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:15:18,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:15:18,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (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 05:15:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:15:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:15:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:15:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-07 05:15:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-07 05:15:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-07 05:15:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-07 05:15:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-07 05:15:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-07 05:15:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:15:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:15:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:15:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:15:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:15:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:15:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:15:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:15:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:15:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:15:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:15:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:15:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:15:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:15:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:15:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:15:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:15:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:15:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:15:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:15:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:15:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:15:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-07 05:15:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:15:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:15:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:15:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:15:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:15:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:15:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:15:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:15:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:15:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:15:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:15:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:15:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:15:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:15:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:15:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:15:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:15:18,196 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:15:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:15:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:15:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:15:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:15:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:15:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:15:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:15:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:15:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:15:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:15:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:15:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:15:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:15:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:15:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:15:18,201 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:15:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:15:18,202 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:15:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:15:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:15:18,203 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:15:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:15:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:15:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:15:18,206 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:15:18,207 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:15:18,207 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:15:18,207 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:15:18,208 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:15:18,209 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:15:18,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:15:18,209 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:15:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:15:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:15:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:15:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:15:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:15:18,210 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:15:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:15:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:15:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:15:18,214 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:15:18,214 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-07 05:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:15:18,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:15:18,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:15:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:15:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:15:18,749 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-07 05:15:19,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:15:19,042 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 05:15:19,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:15:19 BoogieIcfgContainer [2020-11-07 05:15:19,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:15:19,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:15:19,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:15:19,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:15:19,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:15:17" (1/3) ... [2020-11-07 05:15:19,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd3dc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:15:19, skipping insertion in model container [2020-11-07 05:15:19,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:15:17" (2/3) ... [2020-11-07 05:15:19,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd3dc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:15:19, skipping insertion in model container [2020-11-07 05:15:19,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:15:19" (3/3) ... [2020-11-07 05:15:19,063 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-11-07 05:15:19,097 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:15:19,106 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:15:19,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:15:19,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:15:19,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:15:19,170 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:15:19,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:15:19,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:15:19,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:15:19,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:15:19,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:15:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-11-07 05:15:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 05:15:19,208 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:19,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:19,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash 325205440, now seen corresponding path program 1 times [2020-11-07 05:15:19,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:19,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154604802] [2020-11-07 05:15:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:19,582 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 05:15:19,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154604802] [2020-11-07 05:15:19,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:19,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:15:19,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259061496] [2020-11-07 05:15:19,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:15:19,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:19,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:15:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:15:19,624 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-11-07 05:15:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:20,173 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2020-11-07 05:15:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:15:20,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 05:15:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:20,205 INFO L225 Difference]: With dead ends: 150 [2020-11-07 05:15:20,211 INFO L226 Difference]: Without dead ends: 82 [2020-11-07 05:15:20,216 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 05:15:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-07 05:15:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-11-07 05:15:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-07 05:15:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-11-07 05:15:20,277 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 39 [2020-11-07 05:15:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:20,278 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-11-07 05:15:20,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:15:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-11-07 05:15:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 05:15:20,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:20,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:20,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:15:20,283 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:20,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash -322632441, now seen corresponding path program 1 times [2020-11-07 05:15:20,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:20,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502769250] [2020-11-07 05:15:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:20,520 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 05:15:20,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502769250] [2020-11-07 05:15:20,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:20,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:15:20,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207208393] [2020-11-07 05:15:20,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:15:20,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:20,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:15:20,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:15:20,526 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 6 states. [2020-11-07 05:15:20,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:20,883 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2020-11-07 05:15:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:15:20,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-11-07 05:15:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:20,887 INFO L225 Difference]: With dead ends: 150 [2020-11-07 05:15:20,887 INFO L226 Difference]: Without dead ends: 104 [2020-11-07 05:15:20,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:15:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-07 05:15:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2020-11-07 05:15:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-07 05:15:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-11-07 05:15:20,906 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 43 [2020-11-07 05:15:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:20,907 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-11-07 05:15:20,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:15:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-11-07 05:15:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-07 05:15:20,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:20,910 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:20,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:15:20,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:20,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:20,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1699669116, now seen corresponding path program 1 times [2020-11-07 05:15:20,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:20,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549511198] [2020-11-07 05:15:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:15:21,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549511198] [2020-11-07 05:15:21,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:21,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 05:15:21,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308516995] [2020-11-07 05:15:21,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 05:15:21,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:21,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 05:15:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 05:15:21,113 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 4 states. [2020-11-07 05:15:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:21,456 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2020-11-07 05:15:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:15:21,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-11-07 05:15:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:21,461 INFO L225 Difference]: With dead ends: 195 [2020-11-07 05:15:21,462 INFO L226 Difference]: Without dead ends: 134 [2020-11-07 05:15:21,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:15:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-07 05:15:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2020-11-07 05:15:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-07 05:15:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-11-07 05:15:21,482 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 56 [2020-11-07 05:15:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:21,482 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-11-07 05:15:21,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 05:15:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-11-07 05:15:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-07 05:15:21,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:21,485 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:21,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:15:21,486 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash -298314368, now seen corresponding path program 1 times [2020-11-07 05:15:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:21,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230497452] [2020-11-07 05:15:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:15:21,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230497452] [2020-11-07 05:15:21,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:21,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:15:21,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810926287] [2020-11-07 05:15:21,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:15:21,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:21,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:15:21,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:15:21,643 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 5 states. [2020-11-07 05:15:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:21,900 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-11-07 05:15:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:15:21,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-11-07 05:15:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:21,903 INFO L225 Difference]: With dead ends: 147 [2020-11-07 05:15:21,904 INFO L226 Difference]: Without dead ends: 126 [2020-11-07 05:15:21,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:15:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-07 05:15:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2020-11-07 05:15:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-07 05:15:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-11-07 05:15:21,921 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 56 [2020-11-07 05:15:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:21,921 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-11-07 05:15:21,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:15:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-11-07 05:15:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 05:15:21,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:21,924 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:21,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:15:21,925 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash 152366671, now seen corresponding path program 1 times [2020-11-07 05:15:21,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:21,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56596329] [2020-11-07 05:15:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:22,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:15:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:15:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-07 05:15:22,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56596329] [2020-11-07 05:15:22,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:15:22,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:15:22,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897381155] [2020-11-07 05:15:22,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:15:22,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:15:22,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:15:22,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:15:22,111 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 5 states. [2020-11-07 05:15:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:15:22,349 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-11-07 05:15:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:15:22,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-11-07 05:15:22,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:15:22,352 INFO L225 Difference]: With dead ends: 152 [2020-11-07 05:15:22,352 INFO L226 Difference]: Without dead ends: 135 [2020-11-07 05:15:22,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:15:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-07 05:15:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2020-11-07 05:15:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-07 05:15:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2020-11-07 05:15:22,369 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 58 [2020-11-07 05:15:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:15:22,370 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2020-11-07 05:15:22,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:15:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2020-11-07 05:15:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 05:15:22,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:15:22,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:15:22,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:15:22,375 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:15:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:15:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1310006761, now seen corresponding path program 1 times [2020-11-07 05:15:22,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:15:22,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935879287] [2020-11-07 05:15:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:15:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:15:22,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:15:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:15:22,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:15:22,593 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:15:22,594 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:15:22,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:15:22,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:15:22 BoogieIcfgContainer [2020-11-07 05:15:22,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:15:22,723 INFO L168 Benchmark]: Toolchain (without parser) took 5703.60 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 126.8 MB in the beginning and 179.4 MB in the end (delta: -52.7 MB). Peak memory consumption was 117.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:22,724 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 72.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:15:22,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:22,726 INFO L168 Benchmark]: Boogie Preprocessor took 160.11 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 101.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:22,727 INFO L168 Benchmark]: RCFGBuilder took 992.25 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 86.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:22,728 INFO L168 Benchmark]: TraceAbstraction took 3668.97 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 86.0 MB in the beginning and 179.4 MB in the end (delta: -93.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:15:22,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 72.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 854.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 104.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 160.11 ms. Allocated memory is still 151.0 MB. Free memory was 104.1 MB in the beginning and 101.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 992.25 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 86.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3668.97 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 86.0 MB in the beginning and 179.4 MB in the end (delta: -93.5 MB). Peak memory consumption was 75.3 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 flag = 1; VAL [flag=1] [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L535] List t; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L536] List l1; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L537] List l2; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L538] List b; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L539] List u; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L540] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L542] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L543] p->h = 1 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L544] flag = 0 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L550] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L551] p->n = t VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L552] EXPR p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={-2:0}, t={-2:0}] [L552] p = p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->n={-2:0}, t={-2:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L554] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L555] COND FALSE !(a->h == 3) VAL [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L556] flag = 1 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L557] l1 = 0 VAL [a={-1:0}, flag=1, l1={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L558] l2 = 0 VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L559] p = a VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L560] EXPR p->h VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L560] COND TRUE p->h != 3 VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L561] t = p VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L562] EXPR p->n VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={-2:0}, t={-1:0}] [L562] p = p->n VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->n={-2:0}, t={-1:0}] [L563] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L564] t->n = l1 VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L565] l1 = t VAL [a={-1:0}, flag=1, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L566] flag = 0 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L560] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->h=3, t={-1:0}] [L560] COND FALSE !(p->h != 3) VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->h=3, t={-1:0}] [L573] p = l1 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L574] COND TRUE p != 0 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L575] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L575] COND TRUE p->h != 2 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L584] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 133 SDslu, 552 SDs, 0 SdLazy, 582 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 73 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 26255 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...