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/sll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:12:43,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:12:43,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:12:43,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:12:43,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:12:43,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:12:43,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:12:43,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:12:43,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:12:43,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:12:43,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:12:43,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:12:43,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:12:43,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:12:43,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:12:43,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:12:43,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:12:43,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:12:43,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:12:43,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:12:43,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:12:43,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:12:43,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:12:43,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:12:43,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:12:43,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:12:43,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:12:43,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:12:43,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:12:43,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:12:43,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:12:43,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:12:43,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:12:43,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:12:43,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:12:43,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:12:43,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:12:43,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:12:43,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:12:43,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:12:43,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:12:43,257 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 [2019-10-14 23:12:43,279 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:12:43,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:12:43,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:12:43,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:12:43,282 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:12:43,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:12:43,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:12:43,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:12:43,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:12:43,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:12:43,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:12:43,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:12:43,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:12:43,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:12:43,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:12:43,287 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:12:43,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:12:43,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:12:43,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:12:43,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:12:43,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:12:43,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:43,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:12:43,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:12:43,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:12:43,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:12:43,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:12:43,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:12:43,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:12:43,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:12:43,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:12:43,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:12:43,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:12:43,598 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:12:43,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2019-10-14 23:12:43,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e26ff33/2f352efcfbb34f4da973bfbceb229126/FLAG4ddbf1c3f [2019-10-14 23:12:44,157 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:12:44,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2019-10-14 23:12:44,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e26ff33/2f352efcfbb34f4da973bfbceb229126/FLAG4ddbf1c3f [2019-10-14 23:12:44,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e26ff33/2f352efcfbb34f4da973bfbceb229126 [2019-10-14 23:12:44,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:12:44,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:12:44,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:44,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:12:44,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:12:44,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:44" (1/1) ... [2019-10-14 23:12:44,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:44, skipping insertion in model container [2019-10-14 23:12:44,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:44" (1/1) ... [2019-10-14 23:12:44,547 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:12:44,605 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:12:45,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:45,159 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:12:45,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:45,258 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:12:45,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45 WrapperNode [2019-10-14 23:12:45,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:45,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:12:45,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:12:45,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:12:45,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (1/1) ... [2019-10-14 23:12:45,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:12:45,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:12:45,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:12:45,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:12:45,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (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 [2019-10-14 23:12:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:12:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:12:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:12:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:12:45,399 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:12:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:12:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-14 23:12:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-14 23:12:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-10-14 23:12:45,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:12:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:12:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:12:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:12:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:12:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:12:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:12:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:12:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:12:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:12:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:12:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:12:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:12:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:12:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:12:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:12:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:12:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:12:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:12:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:12:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:12:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:12:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:12:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:12:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:12:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:12:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:12:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:12:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:12:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:12:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:12:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:12:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:12:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:12:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:12:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:12:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:12:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:12:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:12:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:12:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:12:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:12:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:12:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:12:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:12:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:12:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:12:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:12:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:12:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:12:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:12:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:12:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:12:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:12:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:12:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:12:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:12:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:12:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:12:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:12:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-14 23:12:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-14 23:12:45,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:12:45,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:12:45,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:12:45,848 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:12:46,112 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:12:46,112 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:12:46,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:46 BoogieIcfgContainer [2019-10-14 23:12:46,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:12:46,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:12:46,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:12:46,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:12:46,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:12:44" (1/3) ... [2019-10-14 23:12:46,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57619f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:46, skipping insertion in model container [2019-10-14 23:12:46,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:45" (2/3) ... [2019-10-14 23:12:46,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57619f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:46, skipping insertion in model container [2019-10-14 23:12:46,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:46" (3/3) ... [2019-10-14 23:12:46,123 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_unequal.i [2019-10-14 23:12:46,133 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:12:46,141 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:12:46,153 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:12:46,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:12:46,177 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:12:46,178 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:12:46,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:12:46,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:12:46,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:12:46,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:12:46,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:12:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2019-10-14 23:12:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-14 23:12:46,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:46,207 INFO L380 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] [2019-10-14 23:12:46,209 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash -40176771, now seen corresponding path program 1 times [2019-10-14 23:12:46,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:46,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061183210] [2019-10-14 23:12:46,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:46,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:46,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:46,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061183210] [2019-10-14 23:12:46,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:46,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:12:46,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237130815] [2019-10-14 23:12:46,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:12:46,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:46,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:12:46,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:12:46,665 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2019-10-14 23:12:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:46,899 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2019-10-14 23:12:46,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:12:46,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-14 23:12:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:46,909 INFO L225 Difference]: With dead ends: 103 [2019-10-14 23:12:46,909 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 23:12:46,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:12:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 23:12:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-14 23:12:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 23:12:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-10-14 23:12:46,957 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2019-10-14 23:12:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:46,959 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-10-14 23:12:46,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:12:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-10-14 23:12:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-14 23:12:46,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:46,961 INFO L380 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] [2019-10-14 23:12:46,962 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:46,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1882198717, now seen corresponding path program 1 times [2019-10-14 23:12:46,963 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:46,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233379656] [2019-10-14 23:12:46,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:46,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:46,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:47,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233379656] [2019-10-14 23:12:47,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:47,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:47,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436812382] [2019-10-14 23:12:47,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:47,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:47,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:47,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:47,211 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 7 states. [2019-10-14 23:12:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:47,446 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2019-10-14 23:12:47,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:47,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-10-14 23:12:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:47,450 INFO L225 Difference]: With dead ends: 72 [2019-10-14 23:12:47,450 INFO L226 Difference]: Without dead ends: 44 [2019-10-14 23:12:47,452 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-14 23:12:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-10-14 23:12:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:12:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-14 23:12:47,477 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 35 [2019-10-14 23:12:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:47,478 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-14 23:12:47,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-14 23:12:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:12:47,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:47,483 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:47,483 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:47,483 INFO L82 PathProgramCache]: Analyzing trace with hash 473130955, now seen corresponding path program 1 times [2019-10-14 23:12:47,484 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:47,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430982699] [2019-10-14 23:12:47,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:47,485 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:47,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:12:48,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430982699] [2019-10-14 23:12:48,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863282586] [2019-10-14 23:12:48,121 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 [2019-10-14 23:12:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:48,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-14 23:12:48,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:48,514 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 [2019-10-14 23:12:48,515 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:48,532 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:48,533 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:12:48,533 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:12:49,870 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 20 [2019-10-14 23:12:51,025 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 26 [2019-10-14 23:12:51,062 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:12:51,074 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:51,075 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-14 23:12:51,076 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-10-14 23:12:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:12:55,518 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:55,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2019-10-14 23:12:55,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001262466] [2019-10-14 23:12:55,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-14 23:12:55,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-14 23:12:55,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=576, Unknown=2, NotChecked=0, Total=650 [2019-10-14 23:12:55,522 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 26 states. [2019-10-14 23:12:57,878 WARN L191 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 29 [2019-10-14 23:13:04,392 WARN L191 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-10-14 23:13:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:13:07,844 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-10-14 23:13:07,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 23:13:07,845 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2019-10-14 23:13:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:13:07,846 INFO L225 Difference]: With dead ends: 55 [2019-10-14 23:13:07,847 INFO L226 Difference]: Without dead ends: 44 [2019-10-14 23:13:07,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=128, Invalid=1059, Unknown=3, NotChecked=0, Total=1190 [2019-10-14 23:13:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-14 23:13:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-10-14 23:13:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:13:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-14 23:13:07,856 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 43 [2019-10-14 23:13:07,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:13:07,856 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-14 23:13:07,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-14 23:13:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-14 23:13:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:13:07,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:07,858 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:13:08,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:13:08,059 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:08,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1654476681, now seen corresponding path program 1 times [2019-10-14 23:13:08,060 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:08,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642300397] [2019-10-14 23:13:08,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:08,062 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:08,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:09,037 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2019-10-14 23:13:09,207 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-10-14 23:13:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:09,666 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-10-14 23:13:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:13:09,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642300397] [2019-10-14 23:13:09,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562994844] [2019-10-14 23:13:09,697 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 [2019-10-14 23:13:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:09,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 91 conjunts are in the unsatisfiable core [2019-10-14 23:13:09,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:13:09,878 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-14 23:13:09,878 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:09,881 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:09,881 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:09,881 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-14 23:13:10,051 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:10,051 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-14 23:13:10,052 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:10,058 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:10,058 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:10,059 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-10-14 23:13:10,108 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-14 23:13:10,108 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:10,114 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:10,115 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:10,115 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-10-14 23:13:10,176 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:10,177 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-10-14 23:13:10,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:10,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:10,181 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:13:10,201 INFO L567 ElimStorePlain]: treesize reduction 25, result has 49.0 percent of original size [2019-10-14 23:13:10,202 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:10,202 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2019-10-14 23:13:10,408 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-10-14 23:13:10,412 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 7 treesize of output 3 [2019-10-14 23:13:10,412 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:10,425 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:10,452 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:10,452 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 46 [2019-10-14 23:13:10,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:10,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:10,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:10,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:10,457 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:10,489 INFO L567 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2019-10-14 23:13:10,490 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:10,490 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:7 [2019-10-14 23:13:13,117 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) 4)))) (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= (store |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.offset| node_create_~temp~0.base) 4))) |c_#memory_$Pointer$.offset|) (not (= 0 node_create_~temp~0.base)))) is different from true [2019-10-14 23:13:31,922 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-14 23:13:31,937 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:31,960 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:31,961 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:31,961 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:59