/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:08:59,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:08:59,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:08:59,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 11:08:59,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 11:08:59,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 11:08:59,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 11:08:59,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 11:08:59,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 11:08:59,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 11:08:59,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 11:08:59,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 11:08:59,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:08:59,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:08:59,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:08:59,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:08:59,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:08:59,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:08:59,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:08:59,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:08:59,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:08:59,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:08:59,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:08:59,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:08:59,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 11:08:59,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 11:08:59,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 11:08:59,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 11:08:59,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 11:08:59,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 11:08:59,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 11:08:59,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 11:08:59,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 11:08:59,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 11:08:59,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 11:08:59,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 11:08:59,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 11:08:59,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 11:08:59,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:08:59,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:08:59,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:08:59,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:08:59,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:08:59,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:08:59,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:08:59,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:08:59,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:08:59,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:08:59,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:08:59,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:08:59,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:08:59,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:08:59,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:08:59,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:08:59,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:08:59,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:08:59,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:08:59,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:08:59,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:08:59,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:08:59,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:08:59,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:08:59,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:08:59,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:08:59,415 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:08:59,415 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:08:59,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:08:59,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:08:59,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:08:59,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:08:59,734 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:08:59,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2021-05-06 11:08:59,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8068c0675/fa01065a043d47ccbe3b81deac651ab9/FLAG6016d6cf1 [2021-05-06 11:09:00,336 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:09:00,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2021-05-06 11:09:00,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8068c0675/fa01065a043d47ccbe3b81deac651ab9/FLAG6016d6cf1 [2021-05-06 11:09:00,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8068c0675/fa01065a043d47ccbe3b81deac651ab9 [2021-05-06 11:09:00,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:09:00,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:09:00,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:09:00,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:09:00,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:09:00,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:09:00" (1/1) ... [2021-05-06 11:09:00,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63997d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:00, skipping insertion in model container [2021-05-06 11:09:00,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:09:00" (1/1) ... [2021-05-06 11:09:00,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:09:00,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:09:00,902 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i[1830,1843] [2021-05-06 11:09:01,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:09:01,037 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:09:01,054 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i[1830,1843] [2021-05-06 11:09:01,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:09:01,156 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:09:01,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01 WrapperNode [2021-05-06 11:09:01,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:09:01,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:09:01,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:09:01,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:09:01,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (1/1) ... [2021-05-06 11:09:01,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:09:01,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:09:01,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:09:01,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:09:01,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (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 [2021-05-06 11:09:01,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:09:01,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:09:01,344 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:09:01,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-05-06 11:09:01,344 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2021-05-06 11:09:01,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-05-06 11:09:01,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-05-06 11:09:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-05-06 11:09:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-05-06 11:09:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-05-06 11:09:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-05-06 11:09:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-05-06 11:09:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-05-06 11:09:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2021-05-06 11:09:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-05-06 11:09:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:09:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:09:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:09:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:09:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:09:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:09:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:09:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-06 11:09:01,349 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-06 11:09:01,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-05-06 11:09:01,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:09:01,956 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2021-05-06 11:09:02,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:09:02,256 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-05-06 11:09:02,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:09:02 BoogieIcfgContainer [2021-05-06 11:09:02,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:09:02,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:09:02,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:09:02,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:09:02,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:09:00" (1/3) ... [2021-05-06 11:09:02,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6123d9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:09:02, skipping insertion in model container [2021-05-06 11:09:02,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:09:01" (2/3) ... [2021-05-06 11:09:02,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6123d9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:09:02, skipping insertion in model container [2021-05-06 11:09:02,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:09:02" (3/3) ... [2021-05-06 11:09:02,273 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2021-05-06 11:09:02,278 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:09:02,281 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:09:02,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:09:02,308 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:09:02,308 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:09:02,308 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:09:02,309 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:09:02,309 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:09:02,309 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:09:02,309 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:09:02,309 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:09:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-06 11:09:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-06 11:09:02,329 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:02,329 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:02,330 INFO L428 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:02,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 1 times [2021-05-06 11:09:02,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:02,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203566634] [2021-05-06 11:09:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:02,391 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 11:09:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:09:02,589 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:02,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203566634] [2021-05-06 11:09:02,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [203566634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:02,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:02,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:09:02,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949130325] [2021-05-06 11:09:02,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:09:02,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:09:02,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:09:02,610 INFO L87 Difference]: Start difference. First operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 11:09:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:03,322 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2021-05-06 11:09:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:09:03,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-06 11:09:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:03,332 INFO L225 Difference]: With dead ends: 331 [2021-05-06 11:09:03,332 INFO L226 Difference]: Without dead ends: 164 [2021-05-06 11:09:03,337 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:09:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-05-06 11:09:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2021-05-06 11:09:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 117 states have internal predecessors, (121), 32 states have call successors, (32), 13 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:09:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2021-05-06 11:09:03,417 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2021-05-06 11:09:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:03,418 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2021-05-06 11:09:03,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 11:09:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2021-05-06 11:09:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-06 11:09:03,420 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:03,421 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:03,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:09:03,421 INFO L428 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 1 times [2021-05-06 11:09:03,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:03,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616644018] [2021-05-06 11:09:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:03,428 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:09:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 11:09:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-05-06 11:09:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-05-06 11:09:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-05-06 11:09:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:09:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:09:03,751 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:09:03,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616644018] [2021-05-06 11:09:03,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [616644018] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:09:03,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:09:03,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 11:09:03,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637429286] [2021-05-06 11:09:03,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 11:09:03,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:09:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 11:09:03,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:09:03,754 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 11:09:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:09:05,063 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2021-05-06 11:09:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 11:09:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-05-06 11:09:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:09:05,066 INFO L225 Difference]: With dead ends: 241 [2021-05-06 11:09:05,067 INFO L226 Difference]: Without dead ends: 236 [2021-05-06 11:09:05,068 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 336.5ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:09:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-05-06 11:09:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2021-05-06 11:09:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 172 states have internal predecessors, (193), 32 states have call successors, (32), 14 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 11:09:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2021-05-06 11:09:05,107 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2021-05-06 11:09:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:09:05,107 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2021-05-06 11:09:05,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 11:09:05,108 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2021-05-06 11:09:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-06 11:09:05,108 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:09:05,109 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:09:05,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:09:05,109 INFO L428 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:09:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:09:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 1 times [2021-05-06 11:09:05,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:09:05,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408912173] [2021-05-06 11:09:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:09:05,112 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:09:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 11:09:05,265 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 11:09:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 11:09:05,396 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 11:09:05,427 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-06 11:09:05,427 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 11:09:05,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:09:05,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:09:05 BoogieIcfgContainer [2021-05-06 11:09:05,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:09:05,457 INFO L168 Benchmark]: Toolchain (without parser) took 4778.41 ms. Allocated memory was 194.0 MB in the beginning and 251.7 MB in the end (delta: 57.7 MB). Free memory was 157.6 MB in the beginning and 159.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:05,457 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 194.0 MB. Free memory is still 175.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:09:05,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.40 ms. Allocated memory is still 194.0 MB. Free memory was 157.4 MB in the beginning and 167.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:05,459 INFO L168 Benchmark]: Boogie Preprocessor took 107.90 ms. Allocated memory is still 194.0 MB. Free memory was 167.7 MB in the beginning and 163.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:05,463 INFO L168 Benchmark]: RCFGBuilder took 990.62 ms. Allocated memory is still 194.0 MB. Free memory was 163.6 MB in the beginning and 153.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 46.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:05,463 INFO L168 Benchmark]: TraceAbstraction took 3196.41 ms. Allocated memory was 194.0 MB in the beginning and 251.7 MB in the end (delta: 57.7 MB). Free memory was 152.7 MB in the beginning and 159.0 MB in the end (delta: -6.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:09:05,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 194.0 MB. Free memory is still 175.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 464.40 ms. Allocated memory is still 194.0 MB. Free memory was 157.4 MB in the beginning and 167.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 107.90 ms. Allocated memory is still 194.0 MB. Free memory was 167.7 MB in the beginning and 163.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 990.62 ms. Allocated memory is still 194.0 MB. Free memory was 163.6 MB in the beginning and 153.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 46.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3196.41 ms. Allocated memory was 194.0 MB in the beginning and 251.7 MB in the end (delta: 57.7 MB). Free memory was 152.7 MB in the beginning and 159.0 MB in the end (delta: -6.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] struct list_head gl_list = {& gl_list, & gl_list}; [L835] struct list_head const *__cil_tmp1 ; [L836] struct list_head const *__cil_tmp2 ; [L839] CALL gl_read() [L676] int tmp ; [L677] int tmp___0 ; [L680] COND TRUE 1 [L683] tmp = __VERIFIER_nondet_int() [L684] CALL gl_insert(tmp) [L622] struct node *node ; [L623] void *tmp ; [L624] unsigned int __cil_tmp4 ; [L625] unsigned int __cil_tmp5 ; [L626] unsigned int __cil_tmp6 ; [L627] struct list_head *__cil_tmp7 ; [L628] unsigned int __cil_tmp8 ; [L629] unsigned int __cil_tmp9 ; [L630] unsigned int __cil_tmp10 ; [L631] unsigned int __cil_tmp11 ; [L632] unsigned int __cil_tmp12 ; [L633] unsigned int __cil_tmp13 ; [L634] unsigned int __cil_tmp14 ; [L635] unsigned int __cil_tmp15 ; [L638] __cil_tmp4 = (unsigned int )20UL [L639] tmp = malloc(__cil_tmp4) [L640] node = (struct node *)tmp [L642] COND FALSE !(! node) [L649] *((int *)node) = value [L650] __cil_tmp5 = (unsigned int )node [L651] __cil_tmp6 = __cil_tmp5 + 4 [L652] __cil_tmp7 = (struct list_head *)__cil_tmp6 [L653] CALL list_add(__cil_tmp7, & gl_list) [L595] struct list_head *__cil_tmp3 ; [L598] EXPR \read(*head) [L598] __cil_tmp3 = *((struct list_head **)head) [L599] CALL __list_add(new, head, __cil_tmp3) [L567] unsigned int __cil_tmp4 ; [L568] unsigned int __cil_tmp5 ; [L569] unsigned int __cil_tmp6 ; [L570] unsigned int __cil_tmp7 ; [L572] __cil_tmp4 = (unsigned int )next [L573] __cil_tmp5 = __cil_tmp4 + 4 [L574] *((struct list_head **)__cil_tmp5) = new [L575] *((struct list_head **)new) = next [L576] __cil_tmp6 = (unsigned int )new [L577] __cil_tmp7 = __cil_tmp6 + 4 [L578] *((struct list_head **)__cil_tmp7) = prev [L579] *((struct list_head **)prev) = new [L599] RET __list_add(new, head, __cil_tmp3) [L653] RET list_add(__cil_tmp7, & gl_list) [L656] COND TRUE 1 [L658] __cil_tmp8 = (unsigned int )node [L659] __cil_tmp9 = __cil_tmp8 + 12 [L660] __cil_tmp10 = (unsigned int )node [L661] __cil_tmp11 = __cil_tmp10 + 12 [L662] *((struct list_head **)__cil_tmp9) = (struct list_head *)__cil_tmp11 [L663] __cil_tmp12 = (unsigned int )node [L664] __cil_tmp13 = __cil_tmp12 + 12 [L665] __cil_tmp14 = (unsigned int )node [L666] __cil_tmp15 = __cil_tmp14 + 12 [L667] *((struct list_head **)__cil_tmp13) = (struct list_head *)__cil_tmp15 [L684] RET gl_insert(tmp) [L685] tmp___0 = __VERIFIER_nondet_int() [L687] COND FALSE !(\read(tmp___0)) [L839] RET gl_read() [L840] __cil_tmp1 = (struct list_head const *)(& gl_list) [L841] CALL inspect(__cil_tmp1) [L55] struct node const *node ; [L56] unsigned int __cil_tmp3 ; [L57] struct list_head *__cil_tmp4 ; [L58] unsigned int __cil_tmp5 ; [L59] int __cil_tmp6 ; [L60] unsigned int __cil_tmp7 ; [L61] unsigned int __cil_tmp8 ; [L62] unsigned int __cil_tmp9 ; [L63] struct list_head *__cil_tmp10 ; [L64] unsigned int __cil_tmp11 ; [L65] int __cil_tmp12 ; [L66] unsigned int __cil_tmp13 ; [L67] unsigned int __cil_tmp14 ; [L68] struct list_head *__cil_tmp15 ; [L69] unsigned int __cil_tmp16 ; [L70] struct list_head *__cil_tmp17 ; [L71] unsigned int __cil_tmp18 ; [L72] int __cil_tmp19 ; [L73] unsigned int __cil_tmp20 ; [L74] unsigned int __cil_tmp21 ; [L75] unsigned int __cil_tmp22 ; [L76] struct list_head *__cil_tmp23 ; [L77] unsigned int __cil_tmp24 ; [L78] int __cil_tmp25 ; [L79] struct node *__cil_tmp26 ; [L80] unsigned int __cil_tmp27 ; [L81] unsigned int __cil_tmp28 ; [L82] struct list_head *__cil_tmp29 ; [L83] unsigned long __cil_tmp30 ; [L84] char *__cil_tmp31 ; [L85] char *__cil_tmp32 ; [L86] struct node *__cil_tmp33 ; [L87] unsigned int __cil_tmp34 ; [L88] unsigned int __cil_tmp35 ; [L89] struct list_head const *__cil_tmp36 ; [L90] unsigned int __cil_tmp37 ; [L91] unsigned int __cil_tmp38 ; [L92] unsigned int __cil_tmp39 ; [L93] struct list_head *__cil_tmp40 ; [L94] unsigned int __cil_tmp41 ; [L95] int __cil_tmp42 ; [L96] unsigned int __cil_tmp43 ; [L97] unsigned int __cil_tmp44 ; [L98] struct list_head const *__cil_tmp45 ; [L99] unsigned int __cil_tmp46 ; [L100] unsigned int __cil_tmp47 ; [L101] unsigned int __cil_tmp48 ; [L102] unsigned int __cil_tmp49 ; [L103] struct list_head *__cil_tmp50 ; [L104] unsigned int __cil_tmp51 ; [L105] int __cil_tmp52 ; [L106] unsigned int __cil_tmp53 ; [L107] unsigned int __cil_tmp54 ; [L108] struct list_head const *__cil_tmp55 ; [L109] unsigned int __cil_tmp56 ; [L110] unsigned int __cil_tmp57 ; [L111] unsigned int __cil_tmp58 ; [L112] struct list_head *__cil_tmp59 ; [L113] unsigned int __cil_tmp60 ; [L114] int __cil_tmp61 ; [L115] unsigned int __cil_tmp62 ; [L116] unsigned int __cil_tmp63 ; [L117] struct list_head const *__cil_tmp64 ; [L118] unsigned int __cil_tmp65 ; [L119] unsigned int __cil_tmp66 ; [L120] unsigned int __cil_tmp67 ; [L121] unsigned int __cil_tmp68 ; [L122] struct list_head *__cil_tmp69 ; [L123] unsigned int __cil_tmp70 ; [L124] int __cil_tmp71 ; [L125] struct node const *__cil_tmp72 ; [L126] unsigned int __cil_tmp73 ; [L127] unsigned int __cil_tmp74 ; [L128] int __cil_tmp75 ; [L129] unsigned int __cil_tmp76 ; [L130] unsigned int __cil_tmp77 ; [L131] struct list_head const *__cil_tmp78 ; [L132] struct node const *__cil_tmp79 ; [L133] unsigned int __cil_tmp80 ; [L134] unsigned int __cil_tmp81 ; [L135] int __cil_tmp82 ; [L136] int const *__cil_tmp83 ; [L137] struct node const *__cil_tmp84 ; [L138] unsigned int __cil_tmp85 ; [L139] unsigned int __cil_tmp86 ; [L140] int __cil_tmp87 ; [L141] unsigned int __cil_tmp88 ; [L142] unsigned int __cil_tmp89 ; [L143] struct list_head *__cil_tmp90 ; [L144] unsigned int __cil_tmp91 ; [L145] unsigned int __cil_tmp92 ; [L146] struct list_head *__cil_tmp93 ; [L147] unsigned int __cil_tmp94 ; [L148] unsigned int __cil_tmp95 ; [L149] int __cil_tmp96 ; [L150] unsigned int __cil_tmp97 ; [L151] unsigned int __cil_tmp98 ; [L152] unsigned int __cil_tmp99 ; [L153] struct list_head *__cil_tmp100 ; [L154] struct list_head *__cil_tmp101 ; [L155] unsigned int __cil_tmp102 ; [L156] unsigned int __cil_tmp103 ; [L157] int __cil_tmp104 ; [L158] struct list_head *__cil_tmp105 ; [L159] unsigned int __cil_tmp106 ; [L160] unsigned int __cil_tmp107 ; [L161] unsigned int __cil_tmp108 ; [L162] struct list_head const *__cil_tmp109 ; [L163] unsigned int __cil_tmp110 ; [L164] struct list_head *__cil_tmp111 ; [L165] unsigned int __cil_tmp112 ; [L166] struct node *__cil_tmp113 ; [L167] unsigned int __cil_tmp114 ; [L168] unsigned int __cil_tmp115 ; [L169] struct list_head *__cil_tmp116 ; [L170] unsigned long __cil_tmp117 ; [L171] char *__cil_tmp118 ; [L172] char *__cil_tmp119 ; [L173] struct node *__cil_tmp120 ; [L174] unsigned int __cil_tmp121 ; [L175] int __cil_tmp122 ; [L179] COND TRUE 1 [L181] COND FALSE !(! head) [L192] COND TRUE 1 [L195] __cil_tmp3 = (unsigned int )head [L196] EXPR \read(*head) [L196] __cil_tmp4 = *((struct list_head * const *)head) [L197] __cil_tmp5 = (unsigned int )__cil_tmp4 [L198] __cil_tmp6 = __cil_tmp5 != __cil_tmp3 [L199] COND TRUE ! __cil_tmp6 [L201] CALL fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3121.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 2055.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 278 SDtfs, 893 SDslu, 166 SDs, 0 SdLazy, 646 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1181.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 443.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 106.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...