/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:31:41,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:31:41,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:31:41,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:31:41,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:31:41,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:31:41,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:31:41,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:31:41,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:31:41,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:31:41,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:31:41,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:31:41,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:31:41,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:31:41,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:31:41,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:31:41,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:31:41,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:31:41,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:31:41,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:31:41,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:31:41,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:31:41,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:31:41,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:31:41,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:31:41,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:31:41,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:31:41,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:31:41,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:31:41,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:31:41,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:31:41,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:31:41,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:31:41,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:31:41,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:31:41,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:31:41,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:31:41,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:31:41,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:31:41,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:31:41,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:31:41,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:31:41,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:31:41,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:31:41,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:31:41,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:31:41,181 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:31:41,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:31:41,182 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:31:41,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:31:41,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:31:41,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:31:41,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:31:41,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:31:41,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:31:41,183 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:31:41,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:31:41,183 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:31:41,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:31:41,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:31:41,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:31:41,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:31:41,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:31:41,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:31:41,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:31:41,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:31:41,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:31:41,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:31:41,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:31:41,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:31:41,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:31:41,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:31:41,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:31:41,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:31:41,490 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:31:41,491 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:31:41,491 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-11-07 00:31:41,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b13eaf3/a63f6c1a7dcb47389a62de40f98f3526/FLAGe35993154 [2019-11-07 00:31:42,144 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:31:42,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-11-07 00:31:42,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b13eaf3/a63f6c1a7dcb47389a62de40f98f3526/FLAGe35993154 [2019-11-07 00:31:42,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b13eaf3/a63f6c1a7dcb47389a62de40f98f3526 [2019-11-07 00:31:42,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:31:42,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:31:42,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:42,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:31:42,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:31:42,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:42" (1/1) ... [2019-11-07 00:31:42,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40852bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:42, skipping insertion in model container [2019-11-07 00:31:42,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:42" (1/1) ... [2019-11-07 00:31:42,486 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:31:42,534 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:31:43,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:43,026 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:31:43,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:43,135 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:31:43,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43 WrapperNode [2019-11-07 00:31:43,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:43,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:31:43,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:31:43,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:31:43,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... [2019-11-07 00:31:43,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:31:43,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:31:43,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:31:43,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:31:43,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:31:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:31:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:31:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:31:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:31:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:31:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:31:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-07 00:31:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2019-11-07 00:31:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:31:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:31:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:31:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:31:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:31:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:31:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:31:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:31:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:31:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:31:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:31:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:31:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:31:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:31:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:31:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:31:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:31:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:31:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:31:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:31:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:31:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:31:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:31:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:31:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:31:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:31:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:31:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:31:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:31:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:31:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:31:43,286 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:31:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:31:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:31:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:31:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:31:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:31:43,287 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:31:43,288 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:31:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:31:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:31:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:31:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:31:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:31:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:31:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:31:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:31:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:31:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:31:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:31:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:31:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:31:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:31:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:31:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:31:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:31:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:31:43,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:31:43,293 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:31:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:31:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:31:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:31:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:31:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:31:43,294 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:31:43,295 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2019-11-07 00:31:43,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:31:43,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:31:43,636 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:31:43,831 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:31:43,831 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 00:31:43,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:43 BoogieIcfgContainer [2019-11-07 00:31:43,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:31:43,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:31:43,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:31:43,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:31:43,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:31:42" (1/3) ... [2019-11-07 00:31:43,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2d9697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:43, skipping insertion in model container [2019-11-07 00:31:43,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:43" (2/3) ... [2019-11-07 00:31:43,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2d9697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:43, skipping insertion in model container [2019-11-07 00:31:43,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:43" (3/3) ... [2019-11-07 00:31:43,841 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2019-11-07 00:31:43,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:31:43,859 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:31:43,871 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:31:43,893 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:31:43,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:31:43,894 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:31:43,894 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:31:43,894 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:31:43,894 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:31:43,894 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:31:43,895 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:31:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-07 00:31:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 00:31:43,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:43,921 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:43,923 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1664510762, now seen corresponding path program 1 times [2019-11-07 00:31:43,937 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:43,937 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514738756] [2019-11-07 00:31:43,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:31:44,132 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514738756] [2019-11-07 00:31:44,134 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:44,134 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:31:44,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983375858] [2019-11-07 00:31:44,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:44,145 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:44,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:31:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:44,164 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-11-07 00:31:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:44,192 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-11-07 00:31:44,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:44,193 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-11-07 00:31:44,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:44,201 INFO L225 Difference]: With dead ends: 56 [2019-11-07 00:31:44,201 INFO L226 Difference]: Without dead ends: 29 [2019-11-07 00:31:44,204 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-07 00:31:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-07 00:31:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-07 00:31:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-11-07 00:31:44,242 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2019-11-07 00:31:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:44,243 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-11-07 00:31:44,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-11-07 00:31:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 00:31:44,244 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:44,244 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:44,245 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:44,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1646407191, now seen corresponding path program 1 times [2019-11-07 00:31:44,245 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:44,246 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957226581] [2019-11-07 00:31:44,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:31:44,330 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957226581] [2019-11-07 00:31:44,334 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:44,334 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:31:44,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260872634] [2019-11-07 00:31:44,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:31:44,336 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:44,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:31:44,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:31:44,338 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2019-11-07 00:31:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:44,407 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-11-07 00:31:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:31:44,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-07 00:31:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:44,410 INFO L225 Difference]: With dead ends: 36 [2019-11-07 00:31:44,410 INFO L226 Difference]: Without dead ends: 32 [2019-11-07 00:31:44,411 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:31:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-07 00:31:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-07 00:31:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-07 00:31:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-07 00:31:44,423 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2019-11-07 00:31:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:44,424 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-07 00:31:44,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:31:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-07 00:31:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 00:31:44,425 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:44,425 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:44,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1145985085, now seen corresponding path program 1 times [2019-11-07 00:31:44,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:44,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882375725] [2019-11-07 00:31:44,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:31:44,594 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882375725] [2019-11-07 00:31:44,595 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619941575] [2019-11-07 00:31:44,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:44,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 00:31:44,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:44,779 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:44,871 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:31:44,871 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 10 [2019-11-07 00:31:44,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97000867] [2019-11-07 00:31:44,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:31:44,872 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:44,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:31:44,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:31:44,873 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 7 states. [2019-11-07 00:31:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:44,925 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2019-11-07 00:31:44,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:31:44,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-07 00:31:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:44,927 INFO L225 Difference]: With dead ends: 52 [2019-11-07 00:31:44,927 INFO L226 Difference]: Without dead ends: 35 [2019-11-07 00:31:44,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:31:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-07 00:31:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-07 00:31:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-07 00:31:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-07 00:31:44,933 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 25 [2019-11-07 00:31:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:44,934 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-07 00:31:44,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:31:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-07 00:31:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 00:31:44,935 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:44,935 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:45,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:45,140 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:45,141 INFO L82 PathProgramCache]: Analyzing trace with hash -63799292, now seen corresponding path program 1 times [2019-11-07 00:31:45,141 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:45,141 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001986583] [2019-11-07 00:31:45,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:45,248 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001986583] [2019-11-07 00:31:45,249 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:45,250 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:31:45,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378328555] [2019-11-07 00:31:45,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:31:45,251 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:45,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:31:45,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:31:45,251 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-11-07 00:31:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:45,281 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2019-11-07 00:31:45,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:31:45,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-07 00:31:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:45,283 INFO L225 Difference]: With dead ends: 57 [2019-11-07 00:31:45,283 INFO L226 Difference]: Without dead ends: 35 [2019-11-07 00:31:45,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:31:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-07 00:31:45,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-07 00:31:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 00:31:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-11-07 00:31:45,297 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2019-11-07 00:31:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:45,299 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-11-07 00:31:45,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:31:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-11-07 00:31:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 00:31:45,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:45,300 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:45,300 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:45,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1752743034, now seen corresponding path program 1 times [2019-11-07 00:31:45,302 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:45,302 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392647276] [2019-11-07 00:31:45,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:31:45,408 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392647276] [2019-11-07 00:31:45,409 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867881551] [2019-11-07 00:31:45,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:45,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 00:31:45,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:45,545 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:45,667 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [152792900] [2019-11-07 00:31:45,673 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 31 [2019-11-07 00:31:45,722 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:31:45,722 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:31:45,807 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:31:45,810 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-11-07 00:31:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:45,815 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:31:45,866 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-07 00:31:45,866 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:31:45,868 INFO L553 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-11-07 00:31:45,868 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:31:45,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:31:45,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9, 6, 6] total 11 [2019-11-07 00:31:45,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975190894] [2019-11-07 00:31:45,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:45,871 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:31:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:31:45,872 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 2 states. [2019-11-07 00:31:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:45,874 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2019-11-07 00:31:45,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:45,876 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-11-07 00:31:45,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:45,876 INFO L225 Difference]: With dead ends: 34 [2019-11-07 00:31:45,876 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:31:45,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:31:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:31:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:31:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:31:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:31:45,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-11-07 00:31:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:45,879 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:31:45,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:31:45,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:31:46,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:46,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:31:46,118 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:31:46,119 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:31:46,119 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:31:46,119 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2019-11-07 00:31:46,119 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2019-11-07 00:31:46,119 INFO L446 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2019-11-07 00:31:46,119 INFO L443 ceAbstractionStarter]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2019-11-07 00:31:46,119 INFO L446 ceAbstractionStarter]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: true [2019-11-07 00:31:46,119 INFO L446 ceAbstractionStarter]: At program point L576-2(lines 576 589) the Hoare annotation is: true [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point dll_createFINAL(lines 574 591) no Hoare annotation was computed. [2019-11-07 00:31:46,120 INFO L446 ceAbstractionStarter]: At program point L579(line 579) the Hoare annotation is: true [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point dll_createEXIT(lines 574 591) no Hoare annotation was computed. [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point L584(lines 584 586) no Hoare annotation was computed. [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point L578(lines 578 580) no Hoare annotation was computed. [2019-11-07 00:31:46,120 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:31:46,121 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:31:46,121 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:31:46,122 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:31:46,122 INFO L439 ceAbstractionStarter]: At program point L609(lines 600 614) the Hoare annotation is: false [2019-11-07 00:31:46,126 INFO L443 ceAbstractionStarter]: For program point L608(lines 608 610) no Hoare annotation was computed. [2019-11-07 00:31:46,126 INFO L439 ceAbstractionStarter]: At program point L606(line 606) the Hoare annotation is: false [2019-11-07 00:31:46,126 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 600 614) the Hoare annotation is: true [2019-11-07 00:31:46,126 INFO L443 ceAbstractionStarter]: For program point L606-1(lines 605 607) no Hoare annotation was computed. [2019-11-07 00:31:46,126 INFO L439 ceAbstractionStarter]: At program point L603(line 603) the Hoare annotation is: false [2019-11-07 00:31:46,126 INFO L439 ceAbstractionStarter]: At program point L605-2(lines 605 607) the Hoare annotation is: false [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point L603-1(line 603) no Hoare annotation was computed. [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point L605-3(lines 605 607) no Hoare annotation was computed. [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 600 614) no Hoare annotation was computed. [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 600 614) no Hoare annotation was computed. [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 612) no Hoare annotation was computed. [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point node_createENTRY(lines 564 573) no Hoare annotation was computed. [2019-11-07 00:31:46,127 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point L567(line 567) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point L566(lines 566 568) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point L594-2(lines 594 596) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point dll_remove_firstFINAL(lines 592 599) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L443 ceAbstractionStarter]: For program point dll_remove_firstEXIT(lines 592 599) no Hoare annotation was computed. [2019-11-07 00:31:46,128 INFO L446 ceAbstractionStarter]: At program point dll_remove_firstENTRY(lines 592 599) the Hoare annotation is: true [2019-11-07 00:31:46,129 INFO L443 ceAbstractionStarter]: For program point L594(lines 594 596) no Hoare annotation was computed. [2019-11-07 00:31:46,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:31:46 BoogieIcfgContainer [2019-11-07 00:31:46,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:31:46,139 INFO L168 Benchmark]: Toolchain (without parser) took 3670.91 ms. Allocated memory was 146.3 MB in the beginning and 244.3 MB in the end (delta: 98.0 MB). Free memory was 101.6 MB in the beginning and 183.5 MB in the end (delta: -81.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:46,139 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:31:46,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.03 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 169.1 MB in the end (delta: -67.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:46,141 INFO L168 Benchmark]: Boogie Preprocessor took 75.65 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 166.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:46,142 INFO L168 Benchmark]: RCFGBuilder took 620.14 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 120.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:46,143 INFO L168 Benchmark]: TraceAbstraction took 2302.94 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 120.0 MB in the beginning and 183.5 MB in the end (delta: -63.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 00:31:46,147 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.03 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 169.1 MB in the end (delta: -67.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.65 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 166.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 620.14 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 120.6 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2302.94 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 120.0 MB in the beginning and 183.5 MB in the end (delta: -63.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 612]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 36 SDslu, 170 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 14 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 10294 SizeOfPredicates, 4 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 6/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 142, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9655172413793104, AVG_VARS_REMOVED_DURING_WEAKENING: 1.3448275862068966, AVG_WEAKENED_CONJUNCTS: 0.20689655172413793, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...