/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:47:36,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:47:36,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:47:36,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:47:36,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:47:36,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:47:36,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:47:36,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:47:36,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:47:36,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:47:36,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:47:36,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:47:36,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:47:36,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:47:36,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:47:36,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:47:36,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:47:36,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:47:36,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:47:36,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:47:36,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:47:36,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:47:36,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:47:36,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:47:36,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:47:36,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:47:36,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:47:36,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:47:36,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:47:36,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:47:36,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:47:36,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:47:36,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:47:36,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:47:36,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:47:36,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:47:36,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:47:36,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:47:36,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:47:36,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:47:36,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:47:36,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:47:36,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:47:36,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:47:36,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:47:36,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:47:36,177 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:47:36,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:47:36,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:47:36,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:47:36,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:47:36,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:47:36,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:47:36,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:47:36,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:47:36,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:47:36,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:47:36,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:47:36,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:47:36,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:47:36,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:47:36,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:47:36,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:47:36,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:47:36,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:47:36,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:47:36,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:47:36,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:47:36,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:47:36,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:47:36,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:47:36,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:47:36,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:47:36,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:47:36,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:47:36,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:47:36,534 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:47:36,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-08-22 16:47:36,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67e1dae9/b112827f7406486ca5b110cce86126ee/FLAGb25a1515b [2020-08-22 16:47:37,138 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:47:37,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-08-22 16:47:37,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67e1dae9/b112827f7406486ca5b110cce86126ee/FLAGb25a1515b [2020-08-22 16:47:37,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f67e1dae9/b112827f7406486ca5b110cce86126ee [2020-08-22 16:47:37,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:47:37,478 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:47:37,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:37,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:47:37,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:47:37,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:37" (1/1) ... [2020-08-22 16:47:37,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef49352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:37, skipping insertion in model container [2020-08-22 16:47:37,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:37" (1/1) ... [2020-08-22 16:47:37,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:47:37,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:47:37,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:37,994 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:47:38,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:38,144 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:47:38,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38 WrapperNode [2020-08-22 16:47:38,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:38,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:47:38,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:47:38,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:47:38,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (1/1) ... [2020-08-22 16:47:38,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:47:38,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:47:38,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:47:38,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:47:38,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (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 [2020-08-22 16:47:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:47:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:47:38,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:47:38,307 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 16:47:38,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 16:47:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 16:47:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 16:47:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 16:47:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 16:47:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 16:47:38,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 16:47:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 16:47:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 16:47:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 16:47:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 16:47:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 16:47:38,310 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 16:47:38,311 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 16:47:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 16:47:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 16:47:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 16:47:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 16:47:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 16:47:38,312 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 16:47:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 16:47:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 16:47:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 16:47:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 16:47:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 16:47:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 16:47:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 16:47:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 16:47:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 16:47:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 16:47:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 16:47:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:47:38,315 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 16:47:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 16:47:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 16:47:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 16:47:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 16:47:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 16:47:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 16:47:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 16:47:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:47:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 16:47:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 16:47:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 16:47:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 16:47:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 16:47:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 16:47:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 16:47:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 16:47:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 16:47:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 16:47:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 16:47:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 16:47:38,321 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 16:47:38,322 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:47:38,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:47:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:47:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:47:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:47:38,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:47:38,898 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-08-22 16:47:38,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:38 BoogieIcfgContainer [2020-08-22 16:47:38,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:47:38,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:47:38,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:47:38,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:47:38,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:47:37" (1/3) ... [2020-08-22 16:47:38,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dfc5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:38, skipping insertion in model container [2020-08-22 16:47:38,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:38" (2/3) ... [2020-08-22 16:47:38,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50dfc5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:38, skipping insertion in model container [2020-08-22 16:47:38,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:38" (3/3) ... [2020-08-22 16:47:38,910 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-08-22 16:47:38,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:47:38,928 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-22 16:47:38,942 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-22 16:47:38,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:47:38,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:47:38,965 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:47:38,965 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:47:38,966 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:47:38,966 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:47:38,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:47:38,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:47:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 16:47:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:47:38,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:38,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:38,992 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-08-22 16:47:39,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:39,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150184896] [2020-08-22 16:47:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:39,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150184896] [2020-08-22 16:47:39,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:39,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:47:39,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875119942] [2020-08-22 16:47:39,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:47:39,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:39,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:47:39,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:47:39,208 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 16:47:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:39,355 INFO L93 Difference]: Finished difference Result 59 states and 90 transitions. [2020-08-22 16:47:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:47:39,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-22 16:47:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:39,368 INFO L225 Difference]: With dead ends: 59 [2020-08-22 16:47:39,368 INFO L226 Difference]: Without dead ends: 27 [2020-08-22 16:47:39,372 INFO L675 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 [2020-08-22 16:47:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-22 16:47:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-22 16:47:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 16:47:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-08-22 16:47:39,432 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2020-08-22 16:47:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:39,432 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-08-22 16:47:39,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:47:39,433 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-08-22 16:47:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:47:39,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:39,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:39,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:47:39,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:39,435 INFO L82 PathProgramCache]: Analyzing trace with hash 622671912, now seen corresponding path program 1 times [2020-08-22 16:47:39,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:39,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322958600] [2020-08-22 16:47:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:39,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322958600] [2020-08-22 16:47:39,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:39,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:39,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339015130] [2020-08-22 16:47:39,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:39,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:39,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:39,566 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-08-22 16:47:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:39,709 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-22 16:47:39,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:39,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-22 16:47:39,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:39,711 INFO L225 Difference]: With dead ends: 35 [2020-08-22 16:47:39,711 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 16:47:39,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 16:47:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-08-22 16:47:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 16:47:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-08-22 16:47:39,718 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2020-08-22 16:47:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:39,719 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-08-22 16:47:39,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-08-22 16:47:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:39,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:39,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:39,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:47:39,720 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-08-22 16:47:39,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:39,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057304124] [2020-08-22 16:47:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:39,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057304124] [2020-08-22 16:47:39,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:39,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:39,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530891095] [2020-08-22 16:47:39,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:39,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:39,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:39,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:39,895 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-08-22 16:47:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:40,132 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-22 16:47:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:47:40,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-22 16:47:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:40,137 INFO L225 Difference]: With dead ends: 51 [2020-08-22 16:47:40,138 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 16:47:40,138 INFO L675 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 [2020-08-22 16:47:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 16:47:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-08-22 16:47:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:47:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-22 16:47:40,155 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-08-22 16:47:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:40,156 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-22 16:47:40,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-22 16:47:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:47:40,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:40,158 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:40,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:47:40,158 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:40,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-08-22 16:47:40,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:40,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679832188] [2020-08-22 16:47:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:40,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:40,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679832188] [2020-08-22 16:47:40,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160025660] [2020-08-22 16:47:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 36 conjunts are in the unsatisfiable core [2020-08-22 16:47:40,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:47:40,694 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-08-22 16:47:40,695 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:40,716 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:40,722 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-08-22 16:47:40,723 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:40,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:40,736 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:40,737 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-08-22 16:47:41,161 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,161 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-08-22 16:47:41,163 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:41,270 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-08-22 16:47:41,271 INFO L625 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-08-22 16:47:41,303 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:41,355 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,361 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:41,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:41,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:41,412 INFO L173 IndexEqualityManager]: detected equality via solver [2020-08-22 16:47:41,429 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2020-08-22 16:47:41,431 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:41,485 INFO L625 ElimStorePlain]: treesize reduction 20, result has 81.0 percent of original size [2020-08-22 16:47:41,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:41,491 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:41,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,524 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:41,524 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-08-22 16:47:41,685 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,685 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-08-22 16:47:41,686 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:41,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,770 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_32|, |v_#memory_int_33|, |v_#memory_int_34|, |v_#memory_$Pointer$.base_25|], 4=[|v_#memory_int_36|]} [2020-08-22 16:47:41,774 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:41,839 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,842 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:41,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,888 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:41,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:41,927 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:41,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:41,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:42,007 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-08-22 16:47:42,008 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-08-22 16:47:42,009 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:42,068 INFO L625 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2020-08-22 16:47:42,086 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:42,087 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:43 [2020-08-22 16:47:42,235 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2020-08-22 16:47:42,236 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:42,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:42,245 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:42,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-08-22 16:47:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:42,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:47:42,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-08-22 16:47:42,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441498671] [2020-08-22 16:47:42,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 16:47:42,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:42,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 16:47:42,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:47:42,252 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 12 states. [2020-08-22 16:47:42,678 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-08-22 16:47:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:43,122 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-08-22 16:47:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:47:43,129 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-08-22 16:47:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:43,132 INFO L225 Difference]: With dead ends: 64 [2020-08-22 16:47:43,132 INFO L226 Difference]: Without dead ends: 62 [2020-08-22 16:47:43,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:47:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-22 16:47:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 23. [2020-08-22 16:47:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-22 16:47:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-08-22 16:47:43,143 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-08-22 16:47:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:43,143 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-08-22 16:47:43,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 16:47:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-08-22 16:47:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:47:43,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:43,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:43,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:43,358 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -506610811, now seen corresponding path program 1 times [2020-08-22 16:47:43,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:43,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821204920] [2020-08-22 16:47:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:43,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821204920] [2020-08-22 16:47:43,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:43,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:43,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431020082] [2020-08-22 16:47:43,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:43,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:43,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:43,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:43,454 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-08-22 16:47:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:43,613 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-08-22 16:47:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:47:43,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 16:47:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:43,615 INFO L225 Difference]: With dead ends: 39 [2020-08-22 16:47:43,615 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 16:47:43,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:47:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 16:47:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-08-22 16:47:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-22 16:47:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-08-22 16:47:43,621 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2020-08-22 16:47:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:43,622 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-08-22 16:47:43,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-08-22 16:47:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:47:43,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:43,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:43,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:47:43,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash -506551229, now seen corresponding path program 1 times [2020-08-22 16:47:43,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:43,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825465902] [2020-08-22 16:47:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:47:43,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:47:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:47:43,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:47:43,663 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:47:43,664 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:47:43,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 16:47:43,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:47:43 BoogieIcfgContainer [2020-08-22 16:47:43,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:47:43,695 INFO L168 Benchmark]: Toolchain (without parser) took 6217.30 ms. Allocated memory was 146.8 MB in the beginning and 248.0 MB in the end (delta: 101.2 MB). Free memory was 101.5 MB in the beginning and 93.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 109.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:43,696 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:47:43,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.76 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 171.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:43,698 INFO L168 Benchmark]: Boogie Preprocessor took 106.18 ms. Allocated memory is still 203.9 MB. Free memory was 171.0 MB in the beginning and 167.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:43,698 INFO L168 Benchmark]: RCFGBuilder took 648.35 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 120.6 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:43,699 INFO L168 Benchmark]: TraceAbstraction took 4790.47 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 120.6 MB in the beginning and 93.5 MB in the end (delta: 27.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:43,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.76 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 171.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.18 ms. Allocated memory is still 203.9 MB. Free memory was 171.0 MB in the beginning and 167.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 648.35 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 120.6 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4790.47 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 120.6 MB in the beginning and 93.5 MB in the end (delta: 27.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 148 SDslu, 286 SDs, 0 SdLazy, 417 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 6 QuantifiedInterpolants, 10742 SizeOfPredicates, 15 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 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...