/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/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:20:50,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:20:50,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:20:50,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:20:50,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:20:50,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:20:50,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:20:50,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:20:50,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:20:50,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:20:50,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:20:50,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:20:50,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:20:50,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:20:50,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:20:50,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:20:50,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:20:50,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:20:50,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:20:50,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:20:50,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:20:50,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:20:50,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:20:50,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:20:50,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:20:50,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:20:50,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:20:50,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:20:50,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:20:50,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:20:50,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:20:50,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:20:50,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:20:50,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:20:50,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:20:50,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:20:50,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:20:50,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:20:50,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:20:50,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:20:50,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:20:50,232 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 05:20:50,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:20:50,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:20:50,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:20:50,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:20:50,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:20:50,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:20:50,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:20:50,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:20:50,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:20:50,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:20:50,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:20:50,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:20:50,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:20:50,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:20:50,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:20:50,251 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:20:50,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:20:50,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:20:50,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:20:50,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:20:50,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:20:50,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:20:50,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:20:50,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:20:50,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:20:50,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:20:50,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:20:50,712 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:20:50,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-11-07 05:20:50,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2375d1f8e/642cbca7cc4844f1bbb8afa6686b9ba1/FLAG86ef015ae [2020-11-07 05:20:51,695 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:20:51,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-11-07 05:20:51,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2375d1f8e/642cbca7cc4844f1bbb8afa6686b9ba1/FLAG86ef015ae [2020-11-07 05:20:51,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2375d1f8e/642cbca7cc4844f1bbb8afa6686b9ba1 [2020-11-07 05:20:51,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:20:51,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:20:51,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:20:51,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:20:51,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:20:51,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:20:51" (1/1) ... [2020-11-07 05:20:52,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f166a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:51, skipping insertion in model container [2020-11-07 05:20:52,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:20:51" (1/1) ... [2020-11-07 05:20:52,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:20:52,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:20:52,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:20:52,461 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:20:52,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:20:52,634 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:20:52,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52 WrapperNode [2020-11-07 05:20:52,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:20:52,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:20:52,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:20:52,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:20:52,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (1/1) ... [2020-11-07 05:20:52,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:20:52,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:20:52,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:20:52,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:20:52,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (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 [2020-11-07 05:20:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:20:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:20:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:20:52,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:20:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 05:20:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 05:20:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 05:20:52,813 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 05:20:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 05:20:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 05:20:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 05:20:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 05:20:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 05:20:52,814 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 05:20:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 05:20:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 05:20:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 05:20:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 05:20:52,815 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 05:20:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 05:20:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 05:20:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 05:20:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 05:20:52,816 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 05:20:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 05:20:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 05:20:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 05:20:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 05:20:52,817 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 05:20:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 05:20:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 05:20:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 05:20:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 05:20:52,818 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 05:20:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 05:20:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 05:20:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 05:20:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 05:20:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 05:20:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 05:20:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 05:20:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 05:20:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 05:20:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 05:20:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 05:20:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 05:20:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 05:20:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 05:20:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 05:20:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 05:20:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 05:20:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 05:20:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 05:20:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 05:20:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 05:20:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 05:20:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 05:20:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 05:20:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 05:20:52,823 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 05:20:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 05:20:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 05:20:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 05:20:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:20:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 05:20:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 05:20:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 05:20:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 05:20:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 05:20:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 05:20:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 05:20:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 05:20:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 05:20:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 05:20:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 05:20:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 05:20:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 05:20:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 05:20:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 05:20:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 05:20:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 05:20:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 05:20:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 05:20:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 05:20:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 05:20:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 05:20:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 05:20:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 05:20:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 05:20:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 05:20:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 05:20:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 05:20:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 05:20:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 05:20:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 05:20:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 05:20:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 05:20:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 05:20:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 05:20:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 05:20:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 05:20:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 05:20:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 05:20:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 05:20:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 05:20:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 05:20:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 05:20:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:20:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:20:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 05:20:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 05:20:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:20:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:20:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:20:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 05:20:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 05:20:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:20:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 05:20:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:20:52,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:20:52,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:20:52,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:20:52,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:20:53,451 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:20:53,452 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-11-07 05:20:53,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:20:53 BoogieIcfgContainer [2020-11-07 05:20:53,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:20:53,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:20:53,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:20:53,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:20:53,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:20:51" (1/3) ... [2020-11-07 05:20:53,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618619b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:20:53, skipping insertion in model container [2020-11-07 05:20:53,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:20:52" (2/3) ... [2020-11-07 05:20:53,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618619b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:20:53, skipping insertion in model container [2020-11-07 05:20:53,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:20:53" (3/3) ... [2020-11-07 05:20:53,465 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-11-07 05:20:53,483 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:20:53,488 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:20:53,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:20:53,573 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:20:53,573 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:20:53,573 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:20:53,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:20:53,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:20:53,574 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:20:53,574 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:20:53,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:20:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-11-07 05:20:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 05:20:53,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:53,630 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] [2020-11-07 05:20:53,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:53,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:53,644 INFO L82 PathProgramCache]: Analyzing trace with hash 973808868, now seen corresponding path program 1 times [2020-11-07 05:20:53,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:53,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809643204] [2020-11-07 05:20:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:53,979 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 05:20:53,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809643204] [2020-11-07 05:20:53,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:53,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:20:53,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752182212] [2020-11-07 05:20:53,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:20:53,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:20:54,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:20:54,017 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 3 states. [2020-11-07 05:20:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:54,309 INFO L93 Difference]: Finished difference Result 196 states and 255 transitions. [2020-11-07 05:20:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:20:54,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-07 05:20:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:54,324 INFO L225 Difference]: With dead ends: 196 [2020-11-07 05:20:54,324 INFO L226 Difference]: Without dead ends: 91 [2020-11-07 05:20:54,329 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 05:20:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-07 05:20:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-07 05:20:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 05:20:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-11-07 05:20:54,389 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 32 [2020-11-07 05:20:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:54,390 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-11-07 05:20:54,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:20:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-11-07 05:20:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 05:20:54,392 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:54,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:20:54,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:20:54,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1863792175, now seen corresponding path program 1 times [2020-11-07 05:20:54,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:54,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979566341] [2020-11-07 05:20:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:54,779 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 05:20:54,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979566341] [2020-11-07 05:20:54,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:54,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 05:20:54,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451055594] [2020-11-07 05:20:54,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 05:20:54,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 05:20:54,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-11-07 05:20:54,787 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 12 states. [2020-11-07 05:20:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:55,713 INFO L93 Difference]: Finished difference Result 174 states and 187 transitions. [2020-11-07 05:20:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 05:20:55,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-07 05:20:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:55,717 INFO L225 Difference]: With dead ends: 174 [2020-11-07 05:20:55,717 INFO L226 Difference]: Without dead ends: 170 [2020-11-07 05:20:55,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-11-07 05:20:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-07 05:20:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 104. [2020-11-07 05:20:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-07 05:20:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-11-07 05:20:55,740 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 33 [2020-11-07 05:20:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:55,741 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-11-07 05:20:55,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 05:20:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-11-07 05:20:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 05:20:55,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:55,743 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] [2020-11-07 05:20:55,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:20:55,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:55,744 INFO L82 PathProgramCache]: Analyzing trace with hash 858838049, now seen corresponding path program 1 times [2020-11-07 05:20:55,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:55,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274187992] [2020-11-07 05:20:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:55,881 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 05:20:55,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274187992] [2020-11-07 05:20:55,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:20:55,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022292841] [2020-11-07 05:20:55,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:20:55,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:55,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:20:55,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:20:55,885 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 6 states. [2020-11-07 05:20:56,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:56,187 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2020-11-07 05:20:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:20:56,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-07 05:20:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:56,189 INFO L225 Difference]: With dead ends: 160 [2020-11-07 05:20:56,190 INFO L226 Difference]: Without dead ends: 156 [2020-11-07 05:20:56,190 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 05:20:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-07 05:20:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 103. [2020-11-07 05:20:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-07 05:20:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-11-07 05:20:56,212 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 34 [2020-11-07 05:20:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:56,213 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-11-07 05:20:56,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:20:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-11-07 05:20:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 05:20:56,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:56,215 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] [2020-11-07 05:20:56,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:20:56,215 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1737930605, now seen corresponding path program 1 times [2020-11-07 05:20:56,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:56,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230497452] [2020-11-07 05:20:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:56,323 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 05:20:56,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230497452] [2020-11-07 05:20:56,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:56,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:20:56,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879288781] [2020-11-07 05:20:56,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:20:56,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:20:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:20:56,327 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 6 states. [2020-11-07 05:20:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:56,587 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-11-07 05:20:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:20:56,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-11-07 05:20:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:56,589 INFO L225 Difference]: With dead ends: 106 [2020-11-07 05:20:56,589 INFO L226 Difference]: Without dead ends: 101 [2020-11-07 05:20:56,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:20:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-07 05:20:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-11-07 05:20:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-07 05:20:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2020-11-07 05:20:56,608 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 41 [2020-11-07 05:20:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:56,608 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2020-11-07 05:20:56,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:20:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2020-11-07 05:20:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 05:20:56,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:56,610 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] [2020-11-07 05:20:56,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:20:56,611 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1088898187, now seen corresponding path program 1 times [2020-11-07 05:20:56,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:56,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646556452] [2020-11-07 05:20:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:57,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:57,128 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 05:20:57,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646556452] [2020-11-07 05:20:57,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:20:57,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 05:20:57,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50253720] [2020-11-07 05:20:57,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 05:20:57,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:57,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 05:20:57,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:20:57,132 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 14 states. [2020-11-07 05:20:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:58,059 INFO L93 Difference]: Finished difference Result 227 states and 243 transitions. [2020-11-07 05:20:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:20:58,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-11-07 05:20:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:58,063 INFO L225 Difference]: With dead ends: 227 [2020-11-07 05:20:58,063 INFO L226 Difference]: Without dead ends: 184 [2020-11-07 05:20:58,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-11-07 05:20:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-07 05:20:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 116. [2020-11-07 05:20:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-07 05:20:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2020-11-07 05:20:58,104 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 41 [2020-11-07 05:20:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:58,107 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2020-11-07 05:20:58,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 05:20:58,107 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2020-11-07 05:20:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 05:20:58,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:58,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 05:20:58,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 05:20:58,114 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1798744832, now seen corresponding path program 1 times [2020-11-07 05:20:58,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:58,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011541343] [2020-11-07 05:20:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:20:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:20:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 05:20:58,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011541343] [2020-11-07 05:20:58,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:20:58,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 05:20:58,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575366143] [2020-11-07 05:20:58,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 05:20:58,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:20:58,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 05:20:58,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-11-07 05:20:58,528 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand 17 states. [2020-11-07 05:20:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:20:59,851 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-11-07 05:20:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 05:20:59,852 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-11-07 05:20:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:20:59,854 INFO L225 Difference]: With dead ends: 150 [2020-11-07 05:20:59,854 INFO L226 Difference]: Without dead ends: 146 [2020-11-07 05:20:59,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-11-07 05:20:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-07 05:20:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-11-07 05:20:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-07 05:20:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2020-11-07 05:20:59,876 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 47 [2020-11-07 05:20:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:20:59,876 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2020-11-07 05:20:59,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 05:20:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2020-11-07 05:20:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 05:20:59,880 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:20:59,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:20:59,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 05:20:59,880 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:20:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:20:59,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1811215688, now seen corresponding path program 1 times [2020-11-07 05:20:59,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:20:59,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361918507] [2020-11-07 05:20:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:20:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:20:59,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:20:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:20:59,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:21:00,014 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:21:00,014 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:21:00,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 05:21:00,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:21:00 BoogieIcfgContainer [2020-11-07 05:21:00,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:21:00,087 INFO L168 Benchmark]: Toolchain (without parser) took 8108.99 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 126.0 MB in the beginning and 174.4 MB in the end (delta: -48.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:00,088 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:21:00,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.48 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:00,090 INFO L168 Benchmark]: Boogie Preprocessor took 83.61 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 132.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:00,091 INFO L168 Benchmark]: RCFGBuilder took 734.36 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 84.1 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:21:00,092 INFO L168 Benchmark]: TraceAbstraction took 6627.67 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 83.6 MB in the beginning and 174.4 MB in the end (delta: -90.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:21:00,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 642.48 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.61 ms. Allocated memory is still 151.0 MB. Free memory was 103.3 MB in the beginning and 132.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 734.36 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 84.1 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6627.67 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 83.6 MB in the beginning and 174.4 MB in the end (delta: -90.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1009] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1021] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1022] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1023] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1023] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1024] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1024] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1026] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1030] COND FALSE !(1 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1035] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1035] COND FALSE !(!(1 == x->data)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1036] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1036] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->next={-2:0}] [L1037] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->data=2] [L1037] COND TRUE !(2 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->data=2] [L1037] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "dll-token-2.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 1330 SDslu, 1788 SDs, 0 SdLazy, 2069 SolverSat, 185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred 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, 6 MinimizatonAttempts, 229 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 41509 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/13 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...