/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/list-simple/dll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:16:42,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:16:42,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:16:42,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:16:42,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:16:42,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:16:42,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:16:42,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:16:42,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:16:42,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:16:42,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:16:42,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:16:42,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:16:42,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:16:42,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:16:42,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:16:42,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:16:42,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:16:42,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:16:42,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:16:42,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:16:42,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:16:42,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:16:42,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:16:42,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:16:42,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:16:42,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:16:42,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:16:42,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:16:42,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:16:42,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:16:42,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:16:42,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:16:42,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:16:42,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:16:42,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:16:42,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:16:42,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:16:42,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:16:42,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:16:42,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:16:42,272 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 [2019-11-06 21:16:42,296 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:16:42,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:16:42,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:16:42,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:16:42,298 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:16:42,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:16:42,299 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:16:42,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:16:42,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:16:42,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:16:42,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:16:42,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:16:42,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:16:42,302 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:16:42,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:16:42,302 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:16:42,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:16:42,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:16:42,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:16:42,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:16:42,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:16:42,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:16:42,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:16:42,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:16:42,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:16:42,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:16:42,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:16:42,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:16:42,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:16:42,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:16:42,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:16:42,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:16:42,593 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:16:42,594 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:16:42,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2019-11-06 21:16:42,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9556efd0/010656f9706b4d4bba63fef6cf446cc3/FLAGeeb21cd6b [2019-11-06 21:16:43,182 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:16:43,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2019-11-06 21:16:43,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9556efd0/010656f9706b4d4bba63fef6cf446cc3/FLAGeeb21cd6b [2019-11-06 21:16:43,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9556efd0/010656f9706b4d4bba63fef6cf446cc3 [2019-11-06 21:16:43,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:16:43,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:16:43,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:16:43,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:16:43,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:16:43,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:43" (1/1) ... [2019-11-06 21:16:43,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf7ac05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:43, skipping insertion in model container [2019-11-06 21:16:43,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:43" (1/1) ... [2019-11-06 21:16:43,478 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:16:43,530 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:16:43,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:16:43,958 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:16:44,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:16:44,068 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:16:44,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44 WrapperNode [2019-11-06 21:16:44,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:16:44,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:16:44,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:16:44,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:16:44,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (1/1) ... [2019-11-06 21:16:44,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:16:44,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:16:44,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:16:44,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:16:44,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (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 [2019-11-06 21:16:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:16:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:16:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:16:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:16:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:16:44,194 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:16:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-06 21:16:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-11-06 21:16:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-11-06 21:16:44,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:16:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:16:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:16:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:16:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:16:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:16:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:16:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:16:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:16:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:16:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:16:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:16:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:16:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:16:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:16:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:16:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:16:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:16:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:16:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:16:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:16:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:16:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:16:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:16:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:16:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:16:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:16:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:16:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:16:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:16:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:16:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:16:44,688 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:16:44,837 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:16:44,837 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 21:16:44,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:44 BoogieIcfgContainer [2019-11-06 21:16:44,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:16:44,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:16:44,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:16:44,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:16:44,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:43" (1/3) ... [2019-11-06 21:16:44,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4cd1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:44, skipping insertion in model container [2019-11-06 21:16:44,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:44" (2/3) ... [2019-11-06 21:16:44,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4cd1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:44, skipping insertion in model container [2019-11-06 21:16:44,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:44" (3/3) ... [2019-11-06 21:16:44,848 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2019-11-06 21:16:44,858 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:16:44,866 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:16:44,878 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:16:44,904 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:16:44,904 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:16:44,904 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:16:44,904 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:16:44,905 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:16:44,905 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:16:44,905 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:16:44,905 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:16:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-11-06 21:16:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 21:16:44,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:44,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:16:44,942 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash -683309345, now seen corresponding path program 1 times [2019-11-06 21:16:44,957 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:44,958 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733107298] [2019-11-06 21:16:44,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:16:45,567 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733107298] [2019-11-06 21:16:45,568 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:45,569 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:16:45,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941926175] [2019-11-06 21:16:45,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:16:45,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:45,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:16:45,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:16:45,594 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 12 states. [2019-11-06 21:16:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:46,203 INFO L93 Difference]: Finished difference Result 108 states and 147 transitions. [2019-11-06 21:16:46,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 21:16:46,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2019-11-06 21:16:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:46,233 INFO L225 Difference]: With dead ends: 108 [2019-11-06 21:16:46,233 INFO L226 Difference]: Without dead ends: 55 [2019-11-06 21:16:46,241 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:16:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-06 21:16:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2019-11-06 21:16:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:16:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-11-06 21:16:46,312 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 29 [2019-11-06 21:16:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:46,314 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-11-06 21:16:46,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:16:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-11-06 21:16:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 21:16:46,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:46,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:16:46,319 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:46,320 INFO L82 PathProgramCache]: Analyzing trace with hash -683307671, now seen corresponding path program 1 times [2019-11-06 21:16:46,321 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:46,321 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114289304] [2019-11-06 21:16:46,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:16:46,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114289304] [2019-11-06 21:16:46,491 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:46,491 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:16:46,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529754186] [2019-11-06 21:16:46,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:16:46,494 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:46,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:16:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:16:46,495 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2019-11-06 21:16:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:46,736 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2019-11-06 21:16:46,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:16:46,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-11-06 21:16:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:46,739 INFO L225 Difference]: With dead ends: 76 [2019-11-06 21:16:46,739 INFO L226 Difference]: Without dead ends: 47 [2019-11-06 21:16:46,740 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:16:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-06 21:16:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-11-06 21:16:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 21:16:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-11-06 21:16:46,749 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 29 [2019-11-06 21:16:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:46,750 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-11-06 21:16:46,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:16:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-11-06 21:16:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 21:16:46,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:46,752 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:16:46,753 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:46,753 INFO L82 PathProgramCache]: Analyzing trace with hash 197721565, now seen corresponding path program 1 times [2019-11-06 21:16:46,753 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:46,754 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970995273] [2019-11-06 21:16:46,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:16:46,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970995273] [2019-11-06 21:16:46,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:46,905 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:16:46,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479062189] [2019-11-06 21:16:46,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:16:46,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:46,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:16:46,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:16:46,907 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 5 states. [2019-11-06 21:16:47,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:47,093 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2019-11-06 21:16:47,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:16:47,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-11-06 21:16:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:47,095 INFO L225 Difference]: With dead ends: 81 [2019-11-06 21:16:47,095 INFO L226 Difference]: Without dead ends: 47 [2019-11-06 21:16:47,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:16:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-06 21:16:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-06 21:16:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-06 21:16:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-11-06 21:16:47,106 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 39 [2019-11-06 21:16:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:47,106 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-11-06 21:16:47,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:16:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-11-06 21:16:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-06 21:16:47,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:47,108 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:16:47,108 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:47,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1607716769, now seen corresponding path program 1 times [2019-11-06 21:16:47,109 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:47,109 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532159652] [2019-11-06 21:16:47,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:16:47,277 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532159652] [2019-11-06 21:16:47,277 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253311395] [2019-11-06 21:16:47,277 INFO L94 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 [2019-11-06 21:16:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:47,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:16:47,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:16:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:16:47,504 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:16:47,504 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-11-06 21:16:47,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794517580] [2019-11-06 21:16:47,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:16:47,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:16:47,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:16:47,507 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 9 states. [2019-11-06 21:16:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:47,709 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2019-11-06 21:16:47,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:16:47,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2019-11-06 21:16:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:47,711 INFO L225 Difference]: With dead ends: 81 [2019-11-06 21:16:47,711 INFO L226 Difference]: Without dead ends: 52 [2019-11-06 21:16:47,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:16:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-06 21:16:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2019-11-06 21:16:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-06 21:16:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-11-06 21:16:47,722 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 39 [2019-11-06 21:16:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:47,722 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-11-06 21:16:47,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:16:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-11-06 21:16:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-06 21:16:47,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:47,725 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:16:47,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:16:47,931 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:47,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:47,932 INFO L82 PathProgramCache]: Analyzing trace with hash 974185811, now seen corresponding path program 1 times [2019-11-06 21:16:47,932 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:47,932 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365928685] [2019-11-06 21:16:47,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:16:48,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365928685] [2019-11-06 21:16:48,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:48,335 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-06 21:16:48,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198651409] [2019-11-06 21:16:48,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 21:16:48,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:48,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 21:16:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:16:48,337 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 14 states. [2019-11-06 21:16:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:49,015 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2019-11-06 21:16:49,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 21:16:49,015 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2019-11-06 21:16:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:49,017 INFO L225 Difference]: With dead ends: 56 [2019-11-06 21:16:49,017 INFO L226 Difference]: Without dead ends: 54 [2019-11-06 21:16:49,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:16:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-06 21:16:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2019-11-06 21:16:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-06 21:16:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2019-11-06 21:16:49,036 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 49 [2019-11-06 21:16:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:49,036 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2019-11-06 21:16:49,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-06 21:16:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2019-11-06 21:16:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:16:49,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:49,043 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:16:49,043 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:49,044 INFO L82 PathProgramCache]: Analyzing trace with hash -110261276, now seen corresponding path program 1 times [2019-11-06 21:16:49,044 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:49,044 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289531759] [2019-11-06 21:16:49,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 21:16:49,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289531759] [2019-11-06 21:16:49,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656769912] [2019-11-06 21:16:49,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:16:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:49,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-06 21:16:49,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:16:49,978 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-06 21:16:49,979 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:16:49,985 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:16:49,989 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:16:49,989 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-06 21:16:52,077 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) (+ node_create_~temp~0.offset 8) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))) (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base))) is different from true