/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:55:55,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:55:55,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:55:55,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:55:55,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:55:55,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:55:55,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:55:55,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:55:55,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:55:55,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:55:55,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:55:55,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:55:55,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:55:55,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:55:55,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:55:55,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:55:55,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:55:55,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:55:55,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:55:55,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:55:55,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:55:55,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:55:55,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:55:55,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:55:55,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:55:55,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:55:55,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:55:55,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:55:55,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:55:55,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:55:55,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:55:55,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:55:55,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:55:55,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:55:55,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:55:55,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:55:55,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:55:55,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:55:55,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:55:55,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:55:55,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:55:55,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:55:55,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:55:55,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:55:55,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:55:55,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:55:55,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:55:55,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:55:55,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:55:55,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:55:55,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:55:55,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:55:55,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:55:55,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:55:55,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:55:55,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:55:55,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:55:55,256 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:55:55,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:55:55,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:55:55,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:55:55,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:55:55,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:55:55,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:55:55,257 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:55:55,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:55:55,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:55:55,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:55:55,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:55:55,696 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:55:55,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-11-07 00:55:55,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2416f372e/a0b8c78cddf9495cb807c1d608cf1b19/FLAGdc8682d1f [2020-11-07 00:55:56,606 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:55:56,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-11-07 00:55:56,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2416f372e/a0b8c78cddf9495cb807c1d608cf1b19/FLAGdc8682d1f [2020-11-07 00:55:56,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2416f372e/a0b8c78cddf9495cb807c1d608cf1b19 [2020-11-07 00:55:56,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:55:56,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:55:56,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:55:56,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:55:56,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:55:56,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:56" (1/1) ... [2020-11-07 00:55:56,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5021728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:56, skipping insertion in model container [2020-11-07 00:55:56,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:56" (1/1) ... [2020-11-07 00:55:56,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:55:56,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:55:57,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:55:57,428 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:55:57,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:55:57,562 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:55:57,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57 WrapperNode [2020-11-07 00:55:57,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:55:57,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:55:57,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:55:57,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:55:57,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... [2020-11-07 00:55:57,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:55:57,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:55:57,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:55:57,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:55:57,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:55:57,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:55:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:55:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:55:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:55:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:55:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:55:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:55:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:55:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:55:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:55:57,832 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:55:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:55:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:55:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:55:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:55:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:55:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:55:57,838 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:55:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:55:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:55:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:55:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:55:57,839 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:55:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:55:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:55:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:55:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:55:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:55:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:55:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:55:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:55:57,849 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:55:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:55:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:55:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:55:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:55:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:55:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:55:58,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:55:58,787 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-07 00:55:58,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:58 BoogieIcfgContainer [2020-11-07 00:55:58,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:55:58,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:55:58,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:55:58,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:55:58,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:56" (1/3) ... [2020-11-07 00:55:58,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3364e68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:58, skipping insertion in model container [2020-11-07 00:55:58,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:57" (2/3) ... [2020-11-07 00:55:58,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3364e68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:55:58, skipping insertion in model container [2020-11-07 00:55:58,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:55:58" (3/3) ... [2020-11-07 00:55:58,814 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-11-07 00:55:58,839 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:55:58,843 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:55:58,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:55:58,885 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:55:58,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:55:58,885 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:55:58,886 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:55:58,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:55:58,886 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:55:58,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:55:58,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:55:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-11-07 00:55:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-07 00:55:58,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:55:58,920 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] [2020-11-07 00:55:58,920 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:55:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:55:58,927 INFO L82 PathProgramCache]: Analyzing trace with hash 968780831, now seen corresponding path program 1 times [2020-11-07 00:55:58,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:55:58,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50202512] [2020-11-07 00:55:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:55:59,063 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:55:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:55:59,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:55:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:55:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:55:59,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50202512] [2020-11-07 00:55:59,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:55:59,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:55:59,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155087718] [2020-11-07 00:55:59,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:55:59,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:55:59,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:55:59,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:55:59,368 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-11-07 00:55:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:55:59,912 INFO L93 Difference]: Finished difference Result 284 states and 363 transitions. [2020-11-07 00:55:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:55:59,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-07 00:55:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:55:59,927 INFO L225 Difference]: With dead ends: 284 [2020-11-07 00:55:59,927 INFO L226 Difference]: Without dead ends: 145 [2020-11-07 00:55:59,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:55:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-07 00:55:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-07 00:55:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-07 00:55:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2020-11-07 00:55:59,990 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 24 [2020-11-07 00:55:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:55:59,991 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2020-11-07 00:55:59,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:55:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2020-11-07 00:55:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 00:55:59,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:55:59,992 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] [2020-11-07 00:55:59,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:55:59,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:55:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:55:59,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1721722334, now seen corresponding path program 1 times [2020-11-07 00:55:59,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:55:59,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683609602] [2020-11-07 00:55:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:00,000 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:00,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683609602] [2020-11-07 00:56:00,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:00,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:56:00,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253531074] [2020-11-07 00:56:00,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:56:00,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:00,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:56:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:00,110 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand 4 states. [2020-11-07 00:56:00,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:00,597 INFO L93 Difference]: Finished difference Result 293 states and 326 transitions. [2020-11-07 00:56:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:56:00,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-07 00:56:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:00,602 INFO L225 Difference]: With dead ends: 293 [2020-11-07 00:56:00,602 INFO L226 Difference]: Without dead ends: 166 [2020-11-07 00:56:00,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-07 00:56:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 161. [2020-11-07 00:56:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 00:56:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2020-11-07 00:56:00,632 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 26 [2020-11-07 00:56:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:00,633 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2020-11-07 00:56:00,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:56:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2020-11-07 00:56:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 00:56:00,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:00,635 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] [2020-11-07 00:56:00,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:56:00,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:00,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1434116462, now seen corresponding path program 1 times [2020-11-07 00:56:00,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:00,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717856231] [2020-11-07 00:56:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:02,277 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-11-07 00:56:02,395 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:02,413 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:03,521 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 00:56:03,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:03,545 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:03,565 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:04,677 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 113 [2020-11-07 00:56:04,678 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:04,698 INFO L547 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:04,717 INFO L547 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:05,833 WARN L194 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:05,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:05,838 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-11-07 00:56:05,838 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:662, output treesize:674 [2020-11-07 00:56:07,032 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:07,058 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:56:07,073 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:07,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:07,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717856231] [2020-11-07 00:56:07,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:07,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:56:07,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721497002] [2020-11-07 00:56:07,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:56:07,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:07,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:56:07,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:56:07,343 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand 6 states. [2020-11-07 00:56:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:08,073 INFO L93 Difference]: Finished difference Result 262 states and 288 transitions. [2020-11-07 00:56:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:56:08,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-07 00:56:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:08,082 INFO L225 Difference]: With dead ends: 262 [2020-11-07 00:56:08,083 INFO L226 Difference]: Without dead ends: 258 [2020-11-07 00:56:08,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:56:08,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-11-07 00:56:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 160. [2020-11-07 00:56:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-07 00:56:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2020-11-07 00:56:08,142 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 44 [2020-11-07 00:56:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:08,142 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2020-11-07 00:56:08,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:56:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2020-11-07 00:56:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 00:56:08,147 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:08,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:08,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:56:08,149 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:08,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1540802085, now seen corresponding path program 1 times [2020-11-07 00:56:08,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:08,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633987474] [2020-11-07 00:56:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:09,651 WARN L194 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-11-07 00:56:09,699 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:09,721 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:10,911 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 00:56:10,913 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:10,927 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:10,944 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:12,087 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 113 [2020-11-07 00:56:12,088 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:12,102 INFO L547 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:12,122 INFO L547 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:13,265 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:13,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:13,270 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-11-07 00:56:13,270 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:662, output treesize:674 [2020-11-07 00:56:14,632 WARN L194 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:14,639 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:56:14,643 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:14,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:14,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633987474] [2020-11-07 00:56:14,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:14,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:56:14,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681475026] [2020-11-07 00:56:14,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:56:14,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:14,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:56:14,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:14,799 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand 4 states. [2020-11-07 00:56:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:15,311 INFO L93 Difference]: Finished difference Result 244 states and 269 transitions. [2020-11-07 00:56:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:56:15,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-11-07 00:56:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:15,317 INFO L225 Difference]: With dead ends: 244 [2020-11-07 00:56:15,317 INFO L226 Difference]: Without dead ends: 161 [2020-11-07 00:56:15,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:56:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-07 00:56:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-11-07 00:56:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 00:56:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2020-11-07 00:56:15,347 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 67 [2020-11-07 00:56:15,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:15,348 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2020-11-07 00:56:15,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:56:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2020-11-07 00:56:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 00:56:15,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:15,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:15,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:56:15,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1137007768, now seen corresponding path program 1 times [2020-11-07 00:56:15,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:15,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829678374] [2020-11-07 00:56:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:16,790 WARN L194 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-11-07 00:56:16,824 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:16,837 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:17,980 WARN L194 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 00:56:17,981 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:17,996 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:18,009 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:19,004 WARN L194 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-11-07 00:56:19,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:19,021 INFO L547 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:19,035 INFO L547 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:20,202 WARN L194 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:20,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:20,205 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-11-07 00:56:20,205 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:662, output treesize:674 [2020-11-07 00:56:21,471 WARN L194 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:21,479 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:56:21,483 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:21,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829678374] [2020-11-07 00:56:21,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:21,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:56:21,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680663488] [2020-11-07 00:56:21,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:56:21,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:21,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:56:21,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:56:21,750 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand 8 states. [2020-11-07 00:56:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:22,672 INFO L93 Difference]: Finished difference Result 271 states and 297 transitions. [2020-11-07 00:56:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 00:56:22,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-11-07 00:56:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:22,675 INFO L225 Difference]: With dead ends: 271 [2020-11-07 00:56:22,676 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 00:56:22,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:56:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 00:56:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-11-07 00:56:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-07 00:56:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 185 transitions. [2020-11-07 00:56:22,703 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 185 transitions. Word has length 69 [2020-11-07 00:56:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:22,703 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 185 transitions. [2020-11-07 00:56:22,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:56:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 185 transitions. [2020-11-07 00:56:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-07 00:56:22,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:22,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:22,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 00:56:22,707 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2050167254, now seen corresponding path program 1 times [2020-11-07 00:56:22,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:22,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305054383] [2020-11-07 00:56:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:24,131 WARN L194 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-11-07 00:56:24,169 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:24,183 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:25,294 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 00:56:25,295 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:25,311 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:25,329 INFO L547 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:26,355 WARN L194 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 113 [2020-11-07 00:56:26,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:26,371 INFO L547 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:26,386 INFO L547 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-07 00:56:27,579 WARN L194 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:27,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-07 00:56:27,582 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2020-11-07 00:56:27,582 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:662, output treesize:674 [2020-11-07 00:56:28,786 WARN L194 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 00:56:28,792 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 00:56:28,796 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:56:28,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:56:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:56:28,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:56:28,958 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:56:28,958 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:56:28,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 00:56:28,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:56:28 BoogieIcfgContainer [2020-11-07 00:56:28,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:56:28,983 INFO L168 Benchmark]: Toolchain (without parser) took 32135.51 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 125.6 MB in the beginning and 69.6 MB in the end (delta: 56.1 MB). Peak memory consumption was 96.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:28,984 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 125.8 MB in the end (delta: 88.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:56:28,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 102.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:28,986 INFO L168 Benchmark]: Boogie Preprocessor took 137.98 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 98.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:28,987 INFO L168 Benchmark]: RCFGBuilder took 1085.18 ms. Allocated memory is still 151.0 MB. Free memory was 98.8 MB in the beginning and 78.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:28,987 INFO L168 Benchmark]: TraceAbstraction took 30182.29 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 77.6 MB in the beginning and 69.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:28,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 125.8 MB in the end (delta: 88.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 102.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 137.98 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 98.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1085.18 ms. Allocated memory is still 151.0 MB. Free memory was 98.8 MB in the beginning and 78.2 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 30182.29 ms. Allocated memory was 151.0 MB in the beginning and 189.8 MB in the end (delta: 38.8 MB). Free memory was 77.6 MB in the beginning and 69.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L1038] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 759 SDtfs, 750 SDslu, 853 SDs, 0 SdLazy, 1006 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred 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, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...