/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_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:31:33,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:31:33,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:31:33,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:31:33,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:31:33,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:31:33,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:31:33,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:31:33,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:31:33,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:31:33,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:31:33,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:31:33,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:31:33,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:31:33,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:31:33,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:31:33,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:31:33,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:31:33,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:31:33,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:31:33,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:31:33,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:31:33,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:31:33,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:31:33,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:31:33,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:31:33,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:31:33,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:31:33,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:31:33,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:31:33,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:31:33,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:31:33,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:31:33,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:31:33,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:31:33,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:31:33,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:31:33,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:31:33,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:31:33,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:31:33,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:31:33,377 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 00:31:33,398 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:31:33,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:31:33,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:31:33,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:31:33,400 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:31:33,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:31:33,401 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:31:33,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:31:33,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:31:33,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:31:33,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:31:33,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:31:33,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:31:33,404 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:31:33,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:31:33,404 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:31:33,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:31:33,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:31:33,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:31:33,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:31:33,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:31:33,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:31:33,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:31:33,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:31:33,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:31:33,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:31:33,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:31:33,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:31:33,407 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 00:31:33,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:31:33,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:31:33,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:31:33,737 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:31:33,738 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:31:33,738 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-11-07 00:31:33,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f427954/9ca077362eb74aa789e64ab35614f200/FLAGf1b072c02 [2019-11-07 00:31:34,363 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:31:34,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2019-11-07 00:31:34,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f427954/9ca077362eb74aa789e64ab35614f200/FLAGf1b072c02 [2019-11-07 00:31:34,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f427954/9ca077362eb74aa789e64ab35614f200 [2019-11-07 00:31:34,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:31:34,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:31:34,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:34,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:31:34,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:31:34,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:34" (1/1) ... [2019-11-07 00:31:34,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269d0f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:34, skipping insertion in model container [2019-11-07 00:31:34,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:34" (1/1) ... [2019-11-07 00:31:34,665 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:31:34,722 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:31:35,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:35,168 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:31:35,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:35,282 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:31:35,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35 WrapperNode [2019-11-07 00:31:35,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:35,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:31:35,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:31:35,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:31:35,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (1/1) ... [2019-11-07 00:31:35,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:31:35,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:31:35,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:31:35,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:31:35,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (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 00:31:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:31:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:31:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:31:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:31:35,431 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:31:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:31:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-07 00:31:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-11-07 00:31:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2019-11-07 00:31:35,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:31:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:31:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:31:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:31:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:31:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:31:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:31:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:31:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:31:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:31:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:31:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:31:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:31:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:31:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:31:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:31:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:31:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:31:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:31:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:31:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:31:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:31:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:31:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:31:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:31:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:31:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:31:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:31:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:31:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:31:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:31:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:31:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:31:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:31:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:31:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:31:35,442 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:31:35,443 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:31:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:31:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:31:35,444 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:31:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:31:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:31:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:31:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:31:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:31:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:31:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:31:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:31:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:31:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:31:35,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:31:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:31:35,448 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:31:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:31:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:31:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:31:35,449 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:31:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:31:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:31:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:31:35,450 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:31:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:31:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:31:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:31:35,452 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:31:35,453 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:31:35,454 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:31:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:31:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:31:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:31:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:31:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:31:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:31:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:31:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:31:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-07 00:31:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:31:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:31:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:31:35,881 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:31:36,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:31:36,124 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:31:36,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:36 BoogieIcfgContainer [2019-11-07 00:31:36,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:31:36,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:31:36,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:31:36,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:31:36,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:31:34" (1/3) ... [2019-11-07 00:31:36,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1fc556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:36, skipping insertion in model container [2019-11-07 00:31:36,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:35" (2/3) ... [2019-11-07 00:31:36,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1fc556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:36, skipping insertion in model container [2019-11-07 00:31:36,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:36" (3/3) ... [2019-11-07 00:31:36,143 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2019-11-07 00:31:36,154 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:31:36,162 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:31:36,173 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:31:36,201 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:31:36,202 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:31:36,202 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:31:36,202 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:31:36,202 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:31:36,202 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:31:36,202 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:31:36,202 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:31:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-11-07 00:31:36,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 00:31:36,228 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:36,229 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:36,231 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1154315247, now seen corresponding path program 1 times [2019-11-07 00:31:36,247 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:36,248 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525795187] [2019-11-07 00:31:36,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:36,447 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 00:31:36,448 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525795187] [2019-11-07 00:31:36,449 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:36,449 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:31:36,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336017168] [2019-11-07 00:31:36,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:36,460 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:36,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:31:36,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:36,481 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-11-07 00:31:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:36,528 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2019-11-07 00:31:36,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:36,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-07 00:31:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:36,544 INFO L225 Difference]: With dead ends: 97 [2019-11-07 00:31:36,544 INFO L226 Difference]: Without dead ends: 42 [2019-11-07 00:31:36,555 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 00:31:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-07 00:31:36,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-11-07 00:31:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-07 00:31:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2019-11-07 00:31:36,618 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 29 [2019-11-07 00:31:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:36,618 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2019-11-07 00:31:36,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2019-11-07 00:31:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-07 00:31:36,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:36,623 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:36,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:36,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1593246622, now seen corresponding path program 1 times [2019-11-07 00:31:36,625 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:36,625 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281373657] [2019-11-07 00:31:36,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:36,864 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 00:31:36,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281373657] [2019-11-07 00:31:36,865 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:36,865 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:31:36,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486697360] [2019-11-07 00:31:36,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:31:36,870 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:36,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:31:36,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:31:36,871 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2019-11-07 00:31:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:36,942 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2019-11-07 00:31:36,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:31:36,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-07 00:31:36,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:36,944 INFO L225 Difference]: With dead ends: 76 [2019-11-07 00:31:36,945 INFO L226 Difference]: Without dead ends: 47 [2019-11-07 00:31:36,946 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:31:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-07 00:31:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-11-07 00:31:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-07 00:31:36,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-11-07 00:31:36,957 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 29 [2019-11-07 00:31:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:36,957 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-11-07 00:31:36,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:31:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-11-07 00:31:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-07 00:31:36,959 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:36,960 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:36,960 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash 751546294, now seen corresponding path program 1 times [2019-11-07 00:31:36,960 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:36,961 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745359397] [2019-11-07 00:31:36,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:37,076 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745359397] [2019-11-07 00:31:37,077 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:37,077 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:31:37,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756330664] [2019-11-07 00:31:37,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:31:37,078 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:37,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:31:37,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:31:37,079 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 3 states. [2019-11-07 00:31:37,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:37,106 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2019-11-07 00:31:37,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:31:37,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-07 00:31:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:37,109 INFO L225 Difference]: With dead ends: 81 [2019-11-07 00:31:37,110 INFO L226 Difference]: Without dead ends: 47 [2019-11-07 00:31:37,110 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 00:31:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-07 00:31:37,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-07 00:31:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-07 00:31:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-11-07 00:31:37,118 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 39 [2019-11-07 00:31:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:37,119 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-11-07 00:31:37,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:31:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-11-07 00:31:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-07 00:31:37,120 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:37,121 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:37,121 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:37,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1053892040, now seen corresponding path program 1 times [2019-11-07 00:31:37,121 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:37,122 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206161236] [2019-11-07 00:31:37,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:37,241 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206161236] [2019-11-07 00:31:37,241 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794424976] [2019-11-07 00:31:37,241 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 00:31:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:37,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 00:31:37,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:31:37,436 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:37,568 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [389226731] [2019-11-07 00:31:37,574 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 40 [2019-11-07 00:31:37,620 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:31:37,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:31:37,685 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:31:37,686 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 30 variables. [2019-11-07 00:31:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:37,691 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:31:37,733 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-07 00:31:37,734 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:31:37,736 INFO L553 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2019-11-07 00:31:37,736 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:31:37,737 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:31:37,737 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6, 6] total 8 [2019-11-07 00:31:37,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234442305] [2019-11-07 00:31:37,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:37,739 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:31:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:31:37,739 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 2 states. [2019-11-07 00:31:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:37,742 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-11-07 00:31:37,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:37,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-11-07 00:31:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:37,743 INFO L225 Difference]: With dead ends: 46 [2019-11-07 00:31:37,744 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:31:37,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:31:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:31:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:31:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:31:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:31:37,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-07 00:31:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:37,746 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:31:37,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:31:37,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:31:37,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:37,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:31:38,004 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:31:38,004 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:31:38,004 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:31:38,005 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2019-11-07 00:31:38,005 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2019-11-07 00:31:38,005 INFO L446 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2019-11-07 00:31:38,005 INFO L446 ceAbstractionStarter]: At program point L577(line 577) the Hoare annotation is: true [2019-11-07 00:31:38,005 INFO L443 ceAbstractionStarter]: For program point L577-1(line 577) no Hoare annotation was computed. [2019-11-07 00:31:38,006 INFO L446 ceAbstractionStarter]: At program point dll_createENTRY(lines 574 587) the Hoare annotation is: true [2019-11-07 00:31:38,006 INFO L446 ceAbstractionStarter]: At program point L576-2(lines 576 585) the Hoare annotation is: true [2019-11-07 00:31:38,006 INFO L443 ceAbstractionStarter]: For program point L576-3(lines 576 585) no Hoare annotation was computed. [2019-11-07 00:31:38,006 INFO L443 ceAbstractionStarter]: For program point dll_createEXIT(lines 574 587) no Hoare annotation was computed. [2019-11-07 00:31:38,006 INFO L443 ceAbstractionStarter]: For program point dll_createFINAL(lines 574 587) no Hoare annotation was computed. [2019-11-07 00:31:38,006 INFO L443 ceAbstractionStarter]: For program point L580(lines 580 582) no Hoare annotation was computed. [2019-11-07 00:31:38,007 INFO L443 ceAbstractionStarter]: For program point L580-2(lines 580 582) no Hoare annotation was computed. [2019-11-07 00:31:38,008 INFO L443 ceAbstractionStarter]: For program point L601-1(lines 601 603) no Hoare annotation was computed. [2019-11-07 00:31:38,008 INFO L446 ceAbstractionStarter]: At program point L601-3(lines 601 603) the Hoare annotation is: true [2019-11-07 00:31:38,009 INFO L443 ceAbstractionStarter]: For program point L597(lines 597 606) no Hoare annotation was computed. [2019-11-07 00:31:38,009 INFO L443 ceAbstractionStarter]: For program point L601-4(lines 601 603) no Hoare annotation was computed. [2019-11-07 00:31:38,009 INFO L446 ceAbstractionStarter]: At program point L596(line 596) the Hoare annotation is: true [2019-11-07 00:31:38,009 INFO L443 ceAbstractionStarter]: For program point L596-1(line 596) no Hoare annotation was computed. [2019-11-07 00:31:38,009 INFO L443 ceAbstractionStarter]: For program point L597-2(lines 595 607) no Hoare annotation was computed. [2019-11-07 00:31:38,009 INFO L446 ceAbstractionStarter]: At program point dll_appendENTRY(lines 595 607) the Hoare annotation is: true [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point dll_appendEXIT(lines 595 607) no Hoare annotation was computed. [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:31:38,010 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-11-07 00:31:38,011 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:31:38,011 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:31:38,011 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:31:38,011 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:31:38,011 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 608 636) no Hoare annotation was computed. [2019-11-07 00:31:38,011 INFO L446 ceAbstractionStarter]: At program point L632(line 632) the Hoare annotation is: true [2019-11-07 00:31:38,011 INFO L443 ceAbstractionStarter]: For program point L632-1(line 632) no Hoare annotation was computed. [2019-11-07 00:31:38,012 INFO L439 ceAbstractionStarter]: At program point L630(lines 608 636) the Hoare annotation is: false [2019-11-07 00:31:38,012 INFO L443 ceAbstractionStarter]: For program point L624(lines 624 626) no Hoare annotation was computed. [2019-11-07 00:31:38,012 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 608 636) no Hoare annotation was computed. [2019-11-07 00:31:38,012 INFO L443 ceAbstractionStarter]: For program point L618(lines 618 620) no Hoare annotation was computed. [2019-11-07 00:31:38,012 INFO L443 ceAbstractionStarter]: For program point L616(lines 616 628) no Hoare annotation was computed. [2019-11-07 00:31:38,012 INFO L443 ceAbstractionStarter]: For program point L616-2(lines 608 636) no Hoare annotation was computed. [2019-11-07 00:31:38,013 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 608 636) the Hoare annotation is: true [2019-11-07 00:31:38,013 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 634) no Hoare annotation was computed. [2019-11-07 00:31:38,014 INFO L443 ceAbstractionStarter]: For program point L617-1(lines 617 623) no Hoare annotation was computed. [2019-11-07 00:31:38,014 INFO L439 ceAbstractionStarter]: At program point L617-3(lines 617 623) the Hoare annotation is: false [2019-11-07 00:31:38,015 INFO L439 ceAbstractionStarter]: At program point L613(line 613) the Hoare annotation is: false [2019-11-07 00:31:38,016 INFO L443 ceAbstractionStarter]: For program point L617-4(lines 617 623) no Hoare annotation was computed. [2019-11-07 00:31:38,016 INFO L443 ceAbstractionStarter]: For program point L613-1(line 613) no Hoare annotation was computed. [2019-11-07 00:31:38,016 INFO L439 ceAbstractionStarter]: At program point L611(line 611) the Hoare annotation is: false [2019-11-07 00:31:38,016 INFO L443 ceAbstractionStarter]: For program point L611-1(line 611) no Hoare annotation was computed. [2019-11-07 00:31:38,016 INFO L443 ceAbstractionStarter]: For program point dll_destroyEXIT(lines 588 594) no Hoare annotation was computed. [2019-11-07 00:31:38,017 INFO L446 ceAbstractionStarter]: At program point dll_destroyENTRY(lines 588 594) the Hoare annotation is: true [2019-11-07 00:31:38,017 INFO L446 ceAbstractionStarter]: At program point L589-2(lines 589 593) the Hoare annotation is: true [2019-11-07 00:31:38,017 INFO L443 ceAbstractionStarter]: For program point L589-3(lines 588 594) no Hoare annotation was computed. [2019-11-07 00:31:38,017 INFO L446 ceAbstractionStarter]: At program point node_createENTRY(lines 564 573) the Hoare annotation is: true [2019-11-07 00:31:38,017 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2019-11-07 00:31:38,017 INFO L446 ceAbstractionStarter]: At program point L567(line 567) the Hoare annotation is: true [2019-11-07 00:31:38,018 INFO L443 ceAbstractionStarter]: For program point L566(lines 566 568) no Hoare annotation was computed. [2019-11-07 00:31:38,018 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2019-11-07 00:31:38,022 INFO L443 ceAbstractionStarter]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2019-11-07 00:31:38,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:31:38 BoogieIcfgContainer [2019-11-07 00:31:38,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:31:38,040 INFO L168 Benchmark]: Toolchain (without parser) took 3388.81 ms. Allocated memory was 136.8 MB in the beginning and 231.7 MB in the end (delta: 94.9 MB). Free memory was 100.4 MB in the beginning and 89.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:38,042 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 00:31:38,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.77 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 166.3 MB in the end (delta: -66.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:38,046 INFO L168 Benchmark]: Boogie Preprocessor took 79.24 ms. Allocated memory is still 201.9 MB. Free memory was 166.3 MB in the beginning and 163.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:38,052 INFO L168 Benchmark]: RCFGBuilder took 762.44 ms. Allocated memory is still 201.9 MB. Free memory was 163.5 MB in the beginning and 113.2 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:38,053 INFO L168 Benchmark]: TraceAbstraction took 1908.64 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 112.5 MB in the beginning and 89.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:38,064 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.77 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 166.3 MB in the end (delta: -66.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.24 ms. Allocated memory is still 201.9 MB. Free memory was 166.3 MB in the beginning and 163.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 762.44 ms. Allocated memory is still 201.9 MB. Free memory was 163.5 MB in the beginning and 113.2 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1908.64 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 112.5 MB in the beginning and 89.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 634]: 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: 601]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 608]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 589]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 62 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 166 SDtfs, 22 SDslu, 164 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 46 PreInvPairs, 47 NumberOfFragments, 21 HoareAnnotationTreeSize, 46 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 11880 SizeOfPredicates, 2 NumberOfNonLiveVariables, 238 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 21/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 117, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9736842105263158, AVG_VARS_REMOVED_DURING_WEAKENING: 1.5526315789473684, AVG_WEAKENED_CONJUNCTS: 0.15789473684210525, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...