./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e585ced56eb20cb86f32939eb5fca0773c487edc ............................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:06:00,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:06:00,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:06:00,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:06:00,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:06:00,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:06:00,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:06:00,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:06:00,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:06:00,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:06:00,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:06:00,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:06:00,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:06:00,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:06:00,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:06:00,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:06:00,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:06:00,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:06:00,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:06:00,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:06:00,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:06:00,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:06:00,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:06:00,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:06:00,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:06:00,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:06:00,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:06:00,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:06:00,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:06:00,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:06:00,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:06:00,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:06:00,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:06:00,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:06:00,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:06:00,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:06:00,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:06:00,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:06:00,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:06:00,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:06:00,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:06:00,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:06:00,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:06:00,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:06:00,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:06:00,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:06:00,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:06:00,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:06:00,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:06:00,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:06:00,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:06:00,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:06:00,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:06:00,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:06:00,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:06:00,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:06:00,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:06:00,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:06:00,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:06:00,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:06:00,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:06:00,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:06:00,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:06:00,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:06:00,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:06:00,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:06:00,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:06:00,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:06:00,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:06:00,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:06:00,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:06:00,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e585ced56eb20cb86f32939eb5fca0773c487edc [2020-10-25 22:06:00,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:06:00,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:06:00,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:06:00,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:06:00,995 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:06:00,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-circular-1.i [2020-10-25 22:06:01,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec31a031/290ca0c2c9cc4e689921c5565f65d938/FLAGfca35acea [2020-10-25 22:06:01,784 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:06:01,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-circular-1.i [2020-10-25 22:06:01,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec31a031/290ca0c2c9cc4e689921c5565f65d938/FLAGfca35acea [2020-10-25 22:06:02,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec31a031/290ca0c2c9cc4e689921c5565f65d938 [2020-10-25 22:06:02,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:06:02,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:06:02,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:06:02,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:06:02,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:06:02,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffa035f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02, skipping insertion in model container [2020-10-25 22:06:02,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:06:02,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:06:02,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:06:02,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:06:02,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:06:02,727 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:06:02,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02 WrapperNode [2020-10-25 22:06:02,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:06:02,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:06:02,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:06:02,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:06:02,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:06:02,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:06:02,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:06:02,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:06:02,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (1/1) ... [2020-10-25 22:06:02,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:06:02,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:06:02,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:06:02,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:06:02,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (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 [2020-10-25 22:06:02,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:06:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:06:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:06:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:06:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:06:02,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:06:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:06:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:06:02,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:06:02,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:06:03,481 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:06:03,481 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-25 22:06:03,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:03 BoogieIcfgContainer [2020-10-25 22:06:03,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:06:03,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:06:03,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:06:03,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:06:03,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:06:02" (1/3) ... [2020-10-25 22:06:03,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c01934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:06:03, skipping insertion in model container [2020-10-25 22:06:03,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:06:02" (2/3) ... [2020-10-25 22:06:03,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c01934b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:06:03, skipping insertion in model container [2020-10-25 22:06:03,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:03" (3/3) ... [2020-10-25 22:06:03,492 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-10-25 22:06:03,505 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:06:03,510 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 22:06:03,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 22:06:03,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:06:03,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:06:03,562 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:06:03,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:06:03,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:06:03,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:06:03,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:06:03,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:06:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-25 22:06:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:06:03,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:03,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:03,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1854531709, now seen corresponding path program 1 times [2020-10-25 22:06:03,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:03,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142599429] [2020-10-25 22:06:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:03,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142599429] [2020-10-25 22:06:03,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:03,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:06:03,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014645234] [2020-10-25 22:06:03,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:06:03,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:06:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:06:03,799 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-10-25 22:06:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:03,822 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2020-10-25 22:06:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:06:03,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-25 22:06:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:03,835 INFO L225 Difference]: With dead ends: 73 [2020-10-25 22:06:03,835 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 22:06:03,839 INFO L677 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 [2020-10-25 22:06:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 22:06:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-25 22:06:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-25 22:06:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-25 22:06:03,881 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2020-10-25 22:06:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:03,881 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-25 22:06:03,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:06:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-25 22:06:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:06:03,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:03,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:03,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:06:03,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:03,884 INFO L82 PathProgramCache]: Analyzing trace with hash 179014541, now seen corresponding path program 1 times [2020-10-25 22:06:03,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:03,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087499533] [2020-10-25 22:06:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:04,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087499533] [2020-10-25 22:06:04,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:04,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:06:04,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923243274] [2020-10-25 22:06:04,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:06:04,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:04,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:06:04,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:06:04,068 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-25 22:06:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:04,171 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-25 22:06:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:06:04,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-25 22:06:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:04,173 INFO L225 Difference]: With dead ends: 47 [2020-10-25 22:06:04,173 INFO L226 Difference]: Without dead ends: 41 [2020-10-25 22:06:04,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:06:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-25 22:06:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2020-10-25 22:06:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-25 22:06:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-25 22:06:04,181 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 8 [2020-10-25 22:06:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:04,182 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-25 22:06:04,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:06:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-25 22:06:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:06:04,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:04,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:04,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:06:04,184 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash 432810643, now seen corresponding path program 1 times [2020-10-25 22:06:04,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:04,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987555014] [2020-10-25 22:06:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:06:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:06:04,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987555014] [2020-10-25 22:06:04,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:06:04,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:06:04,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038563420] [2020-10-25 22:06:04,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:06:04,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:06:04,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:06:04,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:06:04,238 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-10-25 22:06:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:06:04,267 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-10-25 22:06:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:06:04,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-25 22:06:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:06:04,270 INFO L225 Difference]: With dead ends: 77 [2020-10-25 22:06:04,270 INFO L226 Difference]: Without dead ends: 53 [2020-10-25 22:06:04,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:06:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-25 22:06:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2020-10-25 22:06:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-25 22:06:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-25 22:06:04,287 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 11 [2020-10-25 22:06:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:06:04,287 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-25 22:06:04,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:06:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-25 22:06:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 22:06:04,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:06:04,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:06:04,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:06:04,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:06:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:06:04,290 INFO L82 PathProgramCache]: Analyzing trace with hash -660271766, now seen corresponding path program 1 times [2020-10-25 22:06:04,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:06:04,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959174619] [2020-10-25 22:06:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:06:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:06:04,333 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:06:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:06:04,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:06:04,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:06:04,393 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:06:04,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:06:04,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:06:04 BoogieIcfgContainer [2020-10-25 22:06:04,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:06:04,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:06:04,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:06:04,431 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:06:04,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:06:03" (3/4) ... [2020-10-25 22:06:04,434 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:06:04,486 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:06:04,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:06:04,489 INFO L168 Benchmark]: Toolchain (without parser) took 2418.66 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 33.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:04,489 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 39.8 MB. Free memory is still 20.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:06:04,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.98 ms. Allocated memory is still 50.3 MB. Free memory was 26.1 MB in the beginning and 29.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:04,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 50.3 MB. Free memory was 29.7 MB in the beginning and 27.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:06:04,491 INFO L168 Benchmark]: Boogie Preprocessor took 75.72 ms. Allocated memory is still 50.3 MB. Free memory was 27.9 MB in the beginning and 26.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:04,492 INFO L168 Benchmark]: RCFGBuilder took 624.72 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.1 MB in the beginning and 28.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:04,493 INFO L168 Benchmark]: TraceAbstraction took 945.54 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 35.2 MB in the end (delta: -7.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:06:04,494 INFO L168 Benchmark]: Witness Printer took 55.58 ms. Allocated memory is still 60.8 MB. Free memory was 35.2 MB in the beginning and 33.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:06:04,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 39.8 MB. Free memory is still 20.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 651.98 ms. Allocated memory is still 50.3 MB. Free memory was 26.1 MB in the beginning and 29.9 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 50.3 MB. Free memory was 29.7 MB in the beginning and 27.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.72 ms. Allocated memory is still 50.3 MB. Free memory was 27.9 MB in the beginning and 26.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 624.72 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.1 MB in the beginning and 28.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 945.54 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 35.2 MB in the end (delta: -7.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.58 ms. Allocated memory is still 60.8 MB. Free memory was 35.2 MB in the beginning and 33.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) [L1032] EXPR x->data [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-circular-1.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 47 SDslu, 55 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...