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/sll2c_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:04:52,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:04:52,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:04:52,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:04:52,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:04:52,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:04:52,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:04:52,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:04:52,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:04:52,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:04:52,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:04:52,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:04:52,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:04:52,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:04:52,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:04:52,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:04:52,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:04:52,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:04:52,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:04:52,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:04:52,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:04:52,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:04:52,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:04:52,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:04:52,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:04:52,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:04:52,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:04:52,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:04:52,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:04:52,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:04:52,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:04:52,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:04:52,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:04:52,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:04:52,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:04:52,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:04:52,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:04:52,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:04:52,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:04:52,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:04:52,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:04:52,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:04:52,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:04:52,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:04:52,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:04:52,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:04:52,370 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:04:52,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:04:52,370 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:04:52,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:04:52,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:04:52,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:04:52,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:04:52,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:04:52,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:04:52,374 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:04:52,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:04:52,374 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:04:52,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:04:52,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:04:52,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:04:52,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:04:52,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:04:52,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:04:52,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:04:52,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:04:52,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:04:52,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:04:52,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:04:52,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:04:52,379 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 [2019-10-13 21:04:52,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:04:52,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:04:52,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:04:52,760 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:04:52,761 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:04:52,762 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-10-13 21:04:52,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30061c83/2dbc6503ff7f4f488dc07cddc2b60427/FLAG1ec7cc477 [2019-10-13 21:04:53,350 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:04:53,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-10-13 21:04:53,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30061c83/2dbc6503ff7f4f488dc07cddc2b60427/FLAG1ec7cc477 [2019-10-13 21:04:53,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30061c83/2dbc6503ff7f4f488dc07cddc2b60427 [2019-10-13 21:04:53,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:04:53,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:04:53,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:04:53,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:04:53,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:04:53,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:53" (1/1) ... [2019-10-13 21:04:53,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667357e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:53, skipping insertion in model container [2019-10-13 21:04:53,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:53" (1/1) ... [2019-10-13 21:04:53,666 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:04:53,719 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:04:54,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:04:54,233 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:04:54,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:04:54,357 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:04:54,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54 WrapperNode [2019-10-13 21:04:54,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:04:54,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:04:54,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:04:54,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:04:54,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... [2019-10-13 21:04:54,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:04:54,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:04:54,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:04:54,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:04:54,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:04:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:04:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:04:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:04:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:04:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 21:04:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 21:04:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-13 21:04:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_first [2019-10-13 21:04:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:04:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:04:54,492 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:04:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:04:54,493 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:04:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:04:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:04:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:04:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:04:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:04:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:04:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:04:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:04:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:04:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:04:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:04:54,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:04:54,499 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:04:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:04:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:04:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:04:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:04:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:04:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:04:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:04:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:04:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:04:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:04:54,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:04:54,502 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:04:54,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:04:54,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:04:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:04:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:04:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:04:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:04:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:04:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:04:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:04:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:04:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:04:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:04:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:04:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:04:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:04:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:04:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:04:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:04:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:04:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:04:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:04:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:04:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:04:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:04:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:04:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:04:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:04:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:04:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:04:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:04:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:04:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:04:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:04:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:04:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:04:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:04:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:04:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:04:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:04:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:04:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:04:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 21:04:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 21:04:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:04:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:04:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:04:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-13 21:04:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_first [2019-10-13 21:04:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:04:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:04:54,902 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 21:04:55,113 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:04:55,114 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:04:55,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:55 BoogieIcfgContainer [2019-10-13 21:04:55,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:04:55,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:04:55,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:04:55,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:04:55,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:04:53" (1/3) ... [2019-10-13 21:04:55,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ef130e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:55, skipping insertion in model container [2019-10-13 21:04:55,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:54" (2/3) ... [2019-10-13 21:04:55,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ef130e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:55, skipping insertion in model container [2019-10-13 21:04:55,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:55" (3/3) ... [2019-10-13 21:04:55,124 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all.i [2019-10-13 21:04:55,132 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:04:55,140 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:04:55,151 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:04:55,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:04:55,177 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:04:55,177 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:04:55,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:04:55,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:04:55,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:04:55,178 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:04:55,178 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:04:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-10-13 21:04:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:04:55,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:55,209 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:55,210 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:55,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:55,215 INFO L82 PathProgramCache]: Analyzing trace with hash 430323869, now seen corresponding path program 1 times [2019-10-13 21:04:55,223 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:55,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759606345] [2019-10-13 21:04:55,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:55,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:55,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:55,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759606345] [2019-10-13 21:04:55,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:55,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:04:55,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845556635] [2019-10-13 21:04:55,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:04:55,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:55,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:04:55,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:55,514 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2019-10-13 21:04:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:55,558 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2019-10-13 21:04:55,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:04:55,560 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-10-13 21:04:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:55,576 INFO L225 Difference]: With dead ends: 65 [2019-10-13 21:04:55,576 INFO L226 Difference]: Without dead ends: 36 [2019-10-13 21:04:55,583 INFO L600 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 [2019-10-13 21:04:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-13 21:04:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-13 21:04:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 21:04:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-13 21:04:55,673 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2019-10-13 21:04:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:55,676 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-13 21:04:55,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:04:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-13 21:04:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 21:04:55,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:55,680 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:55,680 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash 430145123, now seen corresponding path program 1 times [2019-10-13 21:04:55,682 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:55,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740762201] [2019-10-13 21:04:55,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:55,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:55,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:55,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740762201] [2019-10-13 21:04:55,860 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:55,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:55,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077052534] [2019-10-13 21:04:55,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:55,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:55,863 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-10-13 21:04:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:55,931 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2019-10-13 21:04:55,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:04:55,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-13 21:04:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:55,933 INFO L225 Difference]: With dead ends: 57 [2019-10-13 21:04:55,933 INFO L226 Difference]: Without dead ends: 39 [2019-10-13 21:04:55,935 INFO L600 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 [2019-10-13 21:04:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-13 21:04:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-10-13 21:04:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 21:04:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-10-13 21:04:55,943 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2019-10-13 21:04:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:55,944 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-10-13 21:04:55,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:04:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-10-13 21:04:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:04:55,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:55,945 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:55,946 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash -452541733, now seen corresponding path program 1 times [2019-10-13 21:04:55,946 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:55,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398651111] [2019-10-13 21:04:55,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:55,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:55,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:04:56,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398651111] [2019-10-13 21:04:56,036 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:56,036 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:04:56,036 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493188313] [2019-10-13 21:04:56,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:04:56,037 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:56,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:04:56,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:04:56,037 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2019-10-13 21:04:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:56,082 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2019-10-13 21:04:56,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:04:56,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-13 21:04:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:56,087 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:04:56,088 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 21:04:56,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:04:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 21:04:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-10-13 21:04:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-13 21:04:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-10-13 21:04:56,101 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 32 [2019-10-13 21:04:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:56,102 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-10-13 21:04:56,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:04:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-10-13 21:04:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-13 21:04:56,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:56,105 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:56,106 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1201021362, now seen corresponding path program 1 times [2019-10-13 21:04:56,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:56,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650530910] [2019-10-13 21:04:56,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:56,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:56,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:04:56,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650530910] [2019-10-13 21:04:56,257 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:56,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:04:56,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257320759] [2019-10-13 21:04:56,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:04:56,258 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:56,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:04:56,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:04:56,259 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2019-10-13 21:04:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:56,433 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2019-10-13 21:04:56,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:04:56,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-13 21:04:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:56,437 INFO L225 Difference]: With dead ends: 52 [2019-10-13 21:04:56,437 INFO L226 Difference]: Without dead ends: 48 [2019-10-13 21:04:56,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:04:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-13 21:04:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2019-10-13 21:04:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 21:04:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-10-13 21:04:56,449 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 39 [2019-10-13 21:04:56,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:56,450 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-10-13 21:04:56,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:04:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-10-13 21:04:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 21:04:56,453 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:56,453 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:56,453 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:56,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:56,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1388528326, now seen corresponding path program 1 times [2019-10-13 21:04:56,454 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:56,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950091444] [2019-10-13 21:04:56,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:56,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:56,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:04:56,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950091444] [2019-10-13 21:04:56,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:56,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:56,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850094390] [2019-10-13 21:04:56,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:56,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:56,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:56,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:56,752 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2019-10-13 21:04:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:56,882 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-10-13 21:04:56,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:04:56,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2019-10-13 21:04:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:56,884 INFO L225 Difference]: With dead ends: 61 [2019-10-13 21:04:56,884 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 21:04:56,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:04:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 21:04:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-13 21:04:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-13 21:04:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-10-13 21:04:56,905 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 42 [2019-10-13 21:04:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:56,905 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-10-13 21:04:56,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:04:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-10-13 21:04:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 21:04:56,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:56,907 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:56,907 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:56,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:56,908 INFO L82 PathProgramCache]: Analyzing trace with hash -89881461, now seen corresponding path program 1 times [2019-10-13 21:04:56,908 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:56,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126799351] [2019-10-13 21:04:56,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:56,909 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:56,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:04:56,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126799351] [2019-10-13 21:04:56,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612166609] [2019-10-13 21:04:56,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:57,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:04:57,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:04:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:04:57,192 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:04:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 21:04:57,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1806187675] [2019-10-13 21:04:57,251 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 45 [2019-10-13 21:04:57,321 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:04:57,322 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:04:57,410 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:04:57,412 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. [2019-10-13 21:04:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:57,416 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:04:57,483 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:04:57,483 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:04:57,487 INFO L553 sIntCurrentIteration]: We unified 43 AI predicates to 43 [2019-10-13 21:04:57,487 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:04:57,488 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:04:57,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5, 5] total 8 [2019-10-13 21:04:57,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077336747] [2019-10-13 21:04:57,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:04:57,490 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:57,495 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:04:57,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:04:57,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:57,496 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 2 states. [2019-10-13 21:04:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:57,502 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-10-13 21:04:57,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:04:57,502 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 44 [2019-10-13 21:04:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:57,502 INFO L225 Difference]: With dead ends: 43 [2019-10-13 21:04:57,509 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:04:57,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:04:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:04:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:04:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:04:57,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2019-10-13 21:04:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:57,513 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:04:57,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:04:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:04:57,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:04:57,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:57,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:04:57,771 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:04:57,772 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:04:57,772 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:04:57,772 INFO L446 ceAbstractionStarter]: At program point L561(line 561) the Hoare annotation is: true [2019-10-13 21:04:57,772 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2019-10-13 21:04:57,772 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2019-10-13 21:04:57,772 INFO L446 ceAbstractionStarter]: At program point sll_circular_remove_firstENTRY(lines 584 598) the Hoare annotation is: true [2019-10-13 21:04:57,772 INFO L443 ceAbstractionStarter]: For program point sll_circular_remove_firstEXIT(lines 584 598) no Hoare annotation was computed. [2019-10-13 21:04:57,773 INFO L443 ceAbstractionStarter]: For program point L591-1(lines 591 593) no Hoare annotation was computed. [2019-10-13 21:04:57,773 INFO L446 ceAbstractionStarter]: At program point L591-3(lines 591 593) the Hoare annotation is: true [2019-10-13 21:04:57,773 INFO L443 ceAbstractionStarter]: For program point L591-4(lines 591 593) no Hoare annotation was computed. [2019-10-13 21:04:57,773 INFO L443 ceAbstractionStarter]: For program point L586(lines 586 597) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point L586-2(lines 584 598) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-10-13 21:04:57,774 INFO L446 ceAbstractionStarter]: At program point L576(line 576) the Hoare annotation is: true [2019-10-13 21:04:57,775 INFO L443 ceAbstractionStarter]: For program point L576-1(line 576) no Hoare annotation was computed. [2019-10-13 21:04:57,775 INFO L446 ceAbstractionStarter]: At program point L573(line 573) the Hoare annotation is: true [2019-10-13 21:04:57,775 INFO L446 ceAbstractionStarter]: At program point L575-2(lines 575 580) the Hoare annotation is: true [2019-10-13 21:04:57,775 INFO L443 ceAbstractionStarter]: For program point L573-1(line 573) no Hoare annotation was computed. [2019-10-13 21:04:57,775 INFO L443 ceAbstractionStarter]: For program point L575-3(lines 575 580) no Hoare annotation was computed. [2019-10-13 21:04:57,776 INFO L446 ceAbstractionStarter]: At program point sll_circular_createENTRY(lines 572 583) the Hoare annotation is: true [2019-10-13 21:04:57,776 INFO L443 ceAbstractionStarter]: For program point sll_circular_createFINAL(lines 572 583) no Hoare annotation was computed. [2019-10-13 21:04:57,776 INFO L443 ceAbstractionStarter]: For program point sll_circular_createEXIT(lines 572 583) no Hoare annotation was computed. [2019-10-13 21:04:57,776 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:04:57,777 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:04:57,777 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:04:57,777 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:04:57,777 INFO L439 ceAbstractionStarter]: At program point L609(lines 599 614) the Hoare annotation is: false [2019-10-13 21:04:57,777 INFO L443 ceAbstractionStarter]: For program point L608(lines 608 610) no Hoare annotation was computed. [2019-10-13 21:04:57,778 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 599 614) the Hoare annotation is: true [2019-10-13 21:04:57,778 INFO L439 ceAbstractionStarter]: At program point L605(line 605) the Hoare annotation is: false [2019-10-13 21:04:57,778 INFO L443 ceAbstractionStarter]: For program point L605-1(line 605) no Hoare annotation was computed. [2019-10-13 21:04:57,778 INFO L439 ceAbstractionStarter]: At program point L602(line 602) the Hoare annotation is: false [2019-10-13 21:04:57,778 INFO L439 ceAbstractionStarter]: At program point L604-2(lines 604 607) the Hoare annotation is: false [2019-10-13 21:04:57,778 INFO L443 ceAbstractionStarter]: For program point L602-1(line 602) no Hoare annotation was computed. [2019-10-13 21:04:57,778 INFO L443 ceAbstractionStarter]: For program point L604-3(lines 604 607) no Hoare annotation was computed. [2019-10-13 21:04:57,778 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 599 614) no Hoare annotation was computed. [2019-10-13 21:04:57,779 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 612) no Hoare annotation was computed. [2019-10-13 21:04:57,779 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 599 614) no Hoare annotation was computed. [2019-10-13 21:04:57,779 INFO L446 ceAbstractionStarter]: At program point node_createENTRY(lines 563 571) the Hoare annotation is: true [2019-10-13 21:04:57,779 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 563 571) no Hoare annotation was computed. [2019-10-13 21:04:57,779 INFO L446 ceAbstractionStarter]: At program point L566(line 566) the Hoare annotation is: true [2019-10-13 21:04:57,780 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 563 571) no Hoare annotation was computed. [2019-10-13 21:04:57,780 INFO L443 ceAbstractionStarter]: For program point L565(lines 565 567) no Hoare annotation was computed. [2019-10-13 21:04:57,780 INFO L443 ceAbstractionStarter]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2019-10-13 21:04:57,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:04:57 BoogieIcfgContainer [2019-10-13 21:04:57,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:04:57,791 INFO L168 Benchmark]: Toolchain (without parser) took 4140.98 ms. Allocated memory was 143.7 MB in the beginning and 244.3 MB in the end (delta: 100.7 MB). Free memory was 104.0 MB in the beginning and 131.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:57,792 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 143.7 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:04:57,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.34 ms. Allocated memory was 143.7 MB in the beginning and 206.6 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 170.1 MB in the end (delta: -66.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:57,796 INFO L168 Benchmark]: Boogie Preprocessor took 70.69 ms. Allocated memory is still 206.6 MB. Free memory was 170.1 MB in the beginning and 166.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:57,796 INFO L168 Benchmark]: RCFGBuilder took 685.58 ms. Allocated memory is still 206.6 MB. Free memory was 166.9 MB in the beginning and 120.0 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:57,798 INFO L168 Benchmark]: TraceAbstraction took 2671.95 ms. Allocated memory was 206.6 MB in the beginning and 244.3 MB in the end (delta: 37.7 MB). Free memory was 119.4 MB in the beginning and 131.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:57,808 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 143.7 MB. Free memory was 124.0 MB in the beginning and 123.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.34 ms. Allocated memory was 143.7 MB in the beginning and 206.6 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 170.1 MB in the end (delta: -66.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.69 ms. Allocated memory is still 206.6 MB. Free memory was 170.1 MB in the beginning and 166.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 685.58 ms. Allocated memory is still 206.6 MB. Free memory was 166.9 MB in the beginning and 120.0 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2671.95 ms. Allocated memory was 206.6 MB in the beginning and 244.3 MB in the end (delta: 37.7 MB). Free memory was 119.4 MB in the beginning and 131.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 26.2 MB. 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: 575]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 604]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 591]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 561]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 50 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 36 SDslu, 333 SDs, 0 SdLazy, 134 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 26 PreInvPairs, 26 NumberOfFragments, 18 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 26477 SizeOfPredicates, 2 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 44/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 165, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9767441860465116, AVG_VARS_REMOVED_DURING_WEAKENING: 1.697674418604651, AVG_WEAKENED_CONJUNCTS: 0.13953488372093023, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...