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 0.1.24-13a467a-m [2019-10-14 23:11:56,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:11:56,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:11:56,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:11:56,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:11:56,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:11:56,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:11:56,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:11:56,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:11:56,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:11:56,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:11:56,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:11:56,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:11:56,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:11:56,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:11:56,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:11:56,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:11:56,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:11:56,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:11:56,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:11:56,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:11:56,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:11:56,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:11:56,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:11:56,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:11:56,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:11:56,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:11:56,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:11:56,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:11:56,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:11:56,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:11:56,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:11:56,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:11:56,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:11:56,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:11:56,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:11:56,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:11:56,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:11:56,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:11:56,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:11:56,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:11:56,189 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 23:11:56,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:11:56,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:11:56,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:11:56,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:11:56,213 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:11:56,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:11:56,214 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:11:56,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:11:56,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:11:56,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:11:56,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:11:56,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:11:56,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:11:56,217 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:11:56,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:11:56,217 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:11:56,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:11:56,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:11:56,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:11:56,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:11:56,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:11:56,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:11:56,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:11:56,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:11:56,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:11:56,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:11:56,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:11:56,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:11:56,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:11:56,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:11:56,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:11:56,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:11:56,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:11:56,543 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:11:56,544 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-10-14 23:11:56,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e380e76/80d0181a31bc46c5800e2849af0db235/FLAGb0ae7b9b4 [2019-10-14 23:11:57,162 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:11:57,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-10-14 23:11:57,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e380e76/80d0181a31bc46c5800e2849af0db235/FLAGb0ae7b9b4 [2019-10-14 23:11:57,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e380e76/80d0181a31bc46c5800e2849af0db235 [2019-10-14 23:11:57,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:11:57,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:11:57,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:11:57,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:11:57,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:11:57,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:11:57" (1/1) ... [2019-10-14 23:11:57,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5611840f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:57, skipping insertion in model container [2019-10-14 23:11:57,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:11:57" (1/1) ... [2019-10-14 23:11:57,490 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:11:57,528 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:11:57,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:11:58,014 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:11:58,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:11:58,145 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:11:58,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58 WrapperNode [2019-10-14 23:11:58,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:11:58,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:11:58,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:11:58,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:11:58,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (1/1) ... [2019-10-14 23:11:58,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:11:58,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:11:58,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:11:58,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:11:58,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (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 23:11:58,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:11:58,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:11:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:11:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:11:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:11:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:11:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-14 23:11:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-10-14 23:11:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-10-14 23:11:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:11:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:11:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:11:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:11:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:11:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:11:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:11:58,300 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:11:58,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:11:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:11:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:11:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:11:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:11:58,302 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:11:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:11:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:11:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:11:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:11:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:11:58,303 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:11:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:11:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:11:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:11:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:11:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:11:58,304 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:11:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:11:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:11:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:11:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:11:58,305 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:11:58,306 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:11:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:11:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:11:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:11:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:11:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:11:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:11:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:11:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:11:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:11:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:11:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:11:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:11:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:11:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:11:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:11:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:11:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:11:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:11:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:11:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:11:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:11:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:11:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:11:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:11:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:11:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:11:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:11:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:11:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:11:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:11:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:11:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:11:58,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:11:58,318 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:11:58,319 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:11:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:11:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:11:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:11:58,320 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:11:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:11:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:11:58,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:11:58,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:11:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:11:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:11:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:11:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:11:58,745 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:11:58,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:11:58,946 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:11:58,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:11:58 BoogieIcfgContainer [2019-10-14 23:11:58,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:11:58,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:11:58,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:11:58,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:11:58,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:11:57" (1/3) ... [2019-10-14 23:11:58,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23caba56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:11:58, skipping insertion in model container [2019-10-14 23:11:58,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:58" (2/3) ... [2019-10-14 23:11:58,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23caba56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:11:58, skipping insertion in model container [2019-10-14 23:11:58,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:11:58" (3/3) ... [2019-10-14 23:11:58,961 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2019-10-14 23:11:58,973 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:11:58,982 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:11:58,995 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:11:59,030 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:11:59,030 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:11:59,031 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:11:59,032 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:11:59,032 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:11:59,032 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:11:59,033 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:11:59,033 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:11:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-10-14 23:11:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:11:59,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:59,060 INFO L380 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] [2019-10-14 23:11:59,065 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:59,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1154315247, now seen corresponding path program 1 times [2019-10-14 23:11:59,082 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:59,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545600447] [2019-10-14 23:11:59,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:59,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:59,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:59,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545600447] [2019-10-14 23:11:59,448 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:11:59,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:11:59,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993943650] [2019-10-14 23:11:59,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:11:59,454 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:59,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:11:59,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:11:59,471 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2019-10-14 23:11:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:59,690 INFO L93 Difference]: Finished difference Result 105 states and 138 transitions. [2019-10-14 23:11:59,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:11:59,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-14 23:11:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:59,705 INFO L225 Difference]: With dead ends: 105 [2019-10-14 23:11:59,705 INFO L226 Difference]: Without dead ends: 47 [2019-10-14 23:11:59,709 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 23:11:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-14 23:11:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2019-10-14 23:11:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:11:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2019-10-14 23:11:59,764 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2019-10-14 23:11:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:59,764 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2019-10-14 23:11:59,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:11:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2019-10-14 23:11:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:11:59,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:59,767 INFO L380 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] [2019-10-14 23:11:59,768 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1593246622, now seen corresponding path program 1 times [2019-10-14 23:11:59,768 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:59,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133820487] [2019-10-14 23:11:59,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:59,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:59,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:00,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133820487] [2019-10-14 23:12:00,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:00,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:00,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463078556] [2019-10-14 23:12:00,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:00,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:00,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:00,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:00,025 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 7 states. [2019-10-14 23:12:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:00,257 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2019-10-14 23:12:00,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:00,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-14 23:12:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:00,259 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:12:00,259 INFO L226 Difference]: Without dead ends: 47 [2019-10-14 23:12:00,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-14 23:12:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-10-14 23:12:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:12:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-10-14 23:12:00,270 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 29 [2019-10-14 23:12:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:00,270 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-10-14 23:12:00,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-10-14 23:12:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:12:00,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:00,272 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, 1, 1, 1, 1] [2019-10-14 23:12:00,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:00,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash 751546294, now seen corresponding path program 1 times [2019-10-14 23:12:00,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:00,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853888060] [2019-10-14 23:12:00,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:00,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:00,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:00,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853888060] [2019-10-14 23:12:00,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:00,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:12:00,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129279062] [2019-10-14 23:12:00,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:12:00,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:00,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:12:00,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:12:00,448 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 5 states. [2019-10-14 23:12:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:00,617 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2019-10-14 23:12:00,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:12:00,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-10-14 23:12:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:00,621 INFO L225 Difference]: With dead ends: 81 [2019-10-14 23:12:00,621 INFO L226 Difference]: Without dead ends: 47 [2019-10-14 23:12:00,622 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-14 23:12:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-10-14 23:12:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-14 23:12:00,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-10-14 23:12:00,631 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 39 [2019-10-14 23:12:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:00,631 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-10-14 23:12:00,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:12:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-10-14 23:12:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:12:00,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:00,633 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, 1, 1, 1, 1] [2019-10-14 23:12:00,634 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1053892040, now seen corresponding path program 1 times [2019-10-14 23:12:00,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:00,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515257545] [2019-10-14 23:12:00,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:00,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:00,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:00,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515257545] [2019-10-14 23:12:00,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289778419] [2019-10-14 23:12:00,814 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 23:12:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:00,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:12:00,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:01,022 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:01,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-14 23:12:01,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295854866] [2019-10-14 23:12:01,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:12:01,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:01,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:12:01,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:12:01,024 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 9 states. [2019-10-14 23:12:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:01,283 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2019-10-14 23:12:01,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:12:01,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2019-10-14 23:12:01,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:01,285 INFO L225 Difference]: With dead ends: 81 [2019-10-14 23:12:01,285 INFO L226 Difference]: Without dead ends: 52 [2019-10-14 23:12:01,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:12:01,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-14 23:12:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2019-10-14 23:12:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-14 23:12:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-10-14 23:12:01,301 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 39 [2019-10-14 23:12:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:01,302 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-10-14 23:12:01,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:12:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-10-14 23:12:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:12:01,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:01,308 INFO L380 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] [2019-10-14 23:12:01,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:12:01,514 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:01,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:01,515 INFO L82 PathProgramCache]: Analyzing trace with hash 767869452, now seen corresponding path program 1 times [2019-10-14 23:12:01,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:01,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278020933] [2019-10-14 23:12:01,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:01,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:01,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:02,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278020933] [2019-10-14 23:12:02,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850233464] [2019-10-14 23:12:02,058 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 23:12:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:02,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-14 23:12:02,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:02,449 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 23:12:02,450 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:02,460 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:02,461 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 23:12:02,461 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:12:04,589 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