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_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:59:25,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:59:25,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:59:25,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:59:25,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:59:25,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:59:25,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:59:25,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:59:25,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:59:25,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:59:25,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:59:25,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:59:25,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:59:25,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:59:25,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:59:25,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:59:25,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:59:25,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:59:25,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:59:25,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:59:25,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:59:25,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:59:25,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:59:25,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:59:25,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:59:25,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:59:25,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:59:25,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:59:25,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:59:25,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:59:25,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:59:25,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:59:25,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:59:25,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:59:25,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:59:25,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:59:25,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:59:25,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:59:25,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:59:25,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:59:25,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:59:25,426 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 [2019-09-08 01:59:25,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:59:25,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:59:25,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:59:25,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:59:25,452 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:59:25,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:59:25,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:59:25,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:59:25,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:59:25,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:59:25,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:59:25,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:59:25,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:59:25,455 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:59:25,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:59:25,455 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:59:25,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:59:25,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:59:25,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:59:25,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:59:25,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:59:25,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:59:25,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:59:25,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:59:25,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:59:25,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:59:25,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:59:25,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:59:25,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:59:25,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:59:25,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:59:25,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:59:25,520 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:59:25,520 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:59:25,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-09-08 01:59:25,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2336d1ad/80f7ebf7559c45d088920911ff41b918/FLAG87ebf5ad4 [2019-09-08 01:59:26,112 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:59:26,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-09-08 01:59:26,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2336d1ad/80f7ebf7559c45d088920911ff41b918/FLAG87ebf5ad4 [2019-09-08 01:59:26,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2336d1ad/80f7ebf7559c45d088920911ff41b918 [2019-09-08 01:59:26,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:59:26,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:59:26,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:59:26,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:59:26,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:59:26,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:59:26" (1/1) ... [2019-09-08 01:59:26,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bcc3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:26, skipping insertion in model container [2019-09-08 01:59:26,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:59:26" (1/1) ... [2019-09-08 01:59:26,444 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:59:26,504 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:59:26,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:59:26,974 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:59:27,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:59:27,102 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:59:27,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27 WrapperNode [2019-09-08 01:59:27,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:59:27,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:59:27,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:59:27,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:59:27,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (1/1) ... [2019-09-08 01:59:27,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:59:27,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:59:27,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:59:27,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:59:27,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (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 [2019-09-08 01:59:27,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:59:27,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:59:27,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-08 01:59:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-08 01:59:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-08 01:59:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-08 01:59:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-09-08 01:59:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-09-08 01:59:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-09-08 01:59:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:59:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:59:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-08 01:59:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-08 01:59:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 01:59:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 01:59:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 01:59:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 01:59:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 01:59:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 01:59:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 01:59:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 01:59:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 01:59:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 01:59:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 01:59:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 01:59:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 01:59:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 01:59:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 01:59:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 01:59:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 01:59:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 01:59:27,249 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 01:59:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 01:59:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 01:59:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 01:59:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 01:59:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 01:59:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 01:59:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 01:59:27,254 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 01:59:27,255 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 01:59:27,255 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 01:59:27,255 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 01:59:27,256 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-08 01:59:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 01:59:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 01:59:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 01:59:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-08 01:59:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 01:59:27,257 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 01:59:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-08 01:59:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 01:59:27,258 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 01:59:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-08 01:59:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 01:59:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 01:59:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 01:59:27,259 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 01:59:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 01:59:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 01:59:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 01:59:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 01:59:27,260 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 01:59:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 01:59:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 01:59:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 01:59:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 01:59:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 01:59:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 01:59:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-08 01:59:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:59:27,266 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-09-08 01:59:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:59:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:59:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-08 01:59:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:59:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:59:27,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:59:27,726 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-08 01:59:27,922 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:59:27,923 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 01:59:27,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:59:27 BoogieIcfgContainer [2019-09-08 01:59:27,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:59:27,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:59:27,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:59:27,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:59:27,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:59:26" (1/3) ... [2019-09-08 01:59:27,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3def0cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:59:27, skipping insertion in model container [2019-09-08 01:59:27,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:59:27" (2/3) ... [2019-09-08 01:59:27,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3def0cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:59:27, skipping insertion in model container [2019-09-08 01:59:27,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:59:27" (3/3) ... [2019-09-08 01:59:27,932 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2019-09-08 01:59:27,942 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:59:27,951 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:59:27,965 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:59:27,989 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:59:27,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:59:27,990 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:59:27,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:59:27,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:59:27,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:59:27,990 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:59:27,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:59:27,991 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:59:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-08 01:59:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-08 01:59:28,013 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:59:28,015 INFO L399 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] [2019-09-08 01:59:28,017 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:59:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:59:28,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1154315247, now seen corresponding path program 1 times [2019-09-08 01:59:28,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:59:28,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:59:28,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:59:28,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:59:28,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:59:28,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:59:28,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:59:28,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:59:28,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:59:28,225 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-08 01:59:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:59:28,250 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2019-09-08 01:59:28,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:59:28,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-09-08 01:59:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:59:28,262 INFO L225 Difference]: With dead ends: 97 [2019-09-08 01:59:28,262 INFO L226 Difference]: Without dead ends: 42 [2019-09-08 01:59:28,266 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:59:28,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-08 01:59:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-09-08 01:59:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-09-08 01:59:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2019-09-08 01:59:28,313 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2019-09-08 01:59:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:59:28,313 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2019-09-08 01:59:28,313 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:59:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2019-09-08 01:59:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-08 01:59:28,316 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:59:28,316 INFO L399 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] [2019-09-08 01:59:28,317 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:59:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:59:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1593246622, now seen corresponding path program 1 times [2019-09-08 01:59:28,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:59:28,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:59:28,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:59:28,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:59:28,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:59:28,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 01:59:28,467 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 01:59:28,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 01:59:28,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:59:28,468 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2019-09-08 01:59:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:59:28,541 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2019-09-08 01:59:28,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:59:28,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-09-08 01:59:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:59:28,543 INFO L225 Difference]: With dead ends: 76 [2019-09-08 01:59:28,543 INFO L226 Difference]: Without dead ends: 47 [2019-09-08 01:59:28,545 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 01:59:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-08 01:59:28,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-09-08 01:59:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-08 01:59:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-09-08 01:59:28,555 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 29 [2019-09-08 01:59:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:59:28,555 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-09-08 01:59:28,556 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 01:59:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-09-08 01:59:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-08 01:59:28,557 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:59:28,557 INFO L399 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] [2019-09-08 01:59:28,558 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:59:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:59:28,558 INFO L82 PathProgramCache]: Analyzing trace with hash 751546294, now seen corresponding path program 1 times [2019-09-08 01:59:28,558 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:59:28,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:59:28,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:59:28,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 01:59:28,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:59:28,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:59:28,636 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:59:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:59:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:59:28,637 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 3 states. [2019-09-08 01:59:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:59:28,666 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2019-09-08 01:59:28,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:59:28,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-09-08 01:59:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:59:28,669 INFO L225 Difference]: With dead ends: 81 [2019-09-08 01:59:28,669 INFO L226 Difference]: Without dead ends: 47 [2019-09-08 01:59:28,670 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:59:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-08 01:59:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-09-08 01:59:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-09-08 01:59:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-09-08 01:59:28,678 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 39 [2019-09-08 01:59:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:59:28,679 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-09-08 01:59:28,679 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:59:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-09-08 01:59:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-09-08 01:59:28,680 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:59:28,681 INFO L399 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] [2019-09-08 01:59:28,681 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:59:28,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:59:28,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1053892040, now seen corresponding path program 1 times [2019-09-08 01:59:28,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:59:28,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:59:28,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:59:28,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 01:59:28,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:59:28,824 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:59:28,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:59:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:28,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 01:59:28,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:59:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:59:28,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:59:28,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-08 01:59:28,961 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 01:59:28,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 01:59:28,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 01:59:28,962 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 6 states. [2019-09-08 01:59:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:59:29,038 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2019-09-08 01:59:29,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 01:59:29,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-09-08 01:59:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:59:29,040 INFO L225 Difference]: With dead ends: 81 [2019-09-08 01:59:29,040 INFO L226 Difference]: Without dead ends: 52 [2019-09-08 01:59:29,041 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-08 01:59:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-08 01:59:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2019-09-08 01:59:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-08 01:59:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-09-08 01:59:29,050 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 39 [2019-09-08 01:59:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:59:29,050 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-09-08 01:59:29,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 01:59:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-09-08 01:59:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 01:59:29,052 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:59:29,055 INFO L399 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] [2019-09-08 01:59:29,056 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:59:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:59:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash 767869452, now seen corresponding path program 1 times [2019-09-08 01:59:29,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:59:29,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:59:29,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:29,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:59:29,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:59:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 01:59:29,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:59:29,558 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:59:29,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:59:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:59:29,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-08 01:59:29,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:59:29,871 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 [2019-09-08 01:59:29,872 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:59:29,878 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:59:29,879 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:59:29,879 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-08 01:59:31,939 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