./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95b20088216028e3d05e3cb41d4ed5c20af6a751 ............................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 12:40:15,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:40:15,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:40:15,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:40:15,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:40:15,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:40:15,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:40:15,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:40:15,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:40:15,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:40:15,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:40:15,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:40:15,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:40:15,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:40:15,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:40:15,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:40:15,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:40:15,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:40:15,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:40:15,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:40:15,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:40:15,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:40:15,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:40:15,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:40:15,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:40:15,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:40:15,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:40:15,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:40:15,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:40:15,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:40:15,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:40:15,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:40:15,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:40:15,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:40:15,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:40:15,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:40:15,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:40:15,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:40:15,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:40:15,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:40:15,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:40:15,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:40:15,442 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:40:15,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:40:15,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:40:15,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:40:15,444 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:40:15,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:40:15,444 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:40:15,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:40:15,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:40:15,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:40:15,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:40:15,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:40:15,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:40:15,445 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:40:15,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:40:15,445 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:40:15,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:40:15,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:40:15,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:40:15,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:40:15,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:40:15,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:40:15,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:40:15,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer 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(__VERIFIER_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 -> 95b20088216028e3d05e3cb41d4ed5c20af6a751 [2019-12-07 12:40:15,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:40:15,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:40:15,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:40:15,589 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:40:15,589 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:40:15,590 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2019-12-07 12:40:15,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/data/27067860b/12bfc7d8484a42879788a91f3e53afa2/FLAGc937d765b [2019-12-07 12:40:16,011 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:40:16,012 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/sv-benchmarks/c/forester-heap/dll-circular-1.i [2019-12-07 12:40:16,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/data/27067860b/12bfc7d8484a42879788a91f3e53afa2/FLAGc937d765b [2019-12-07 12:40:16,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/data/27067860b/12bfc7d8484a42879788a91f3e53afa2 [2019-12-07 12:40:16,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:40:16,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:40:16,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:40:16,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:40:16,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:40:16,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542f2740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16, skipping insertion in model container [2019-12-07 12:40:16,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:40:16,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:40:16,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:40:16,289 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:40:16,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:40:16,346 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:40:16,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16 WrapperNode [2019-12-07 12:40:16,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:40:16,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:40:16,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:40:16,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:40:16,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:40:16,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:40:16,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:40:16,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:40:16,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... [2019-12-07 12:40:16,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:40:16,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:40:16,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:40:16,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:40:16,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:40:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:40:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:40:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 12:40:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 12:40:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 12:40:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:40:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:40:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:40:16,650 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:40:16,651 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 12:40:16,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:40:16 BoogieIcfgContainer [2019-12-07 12:40:16,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:40:16,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:40:16,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:40:16,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:40:16,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:40:16" (1/3) ... [2019-12-07 12:40:16,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8318cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:40:16, skipping insertion in model container [2019-12-07 12:40:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:40:16" (2/3) ... [2019-12-07 12:40:16,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8318cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:40:16, skipping insertion in model container [2019-12-07 12:40:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:40:16" (3/3) ... [2019-12-07 12:40:16,656 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2019-12-07 12:40:16,663 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:40:16,667 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 12:40:16,674 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 12:40:16,688 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:40:16,688 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:40:16,688 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:40:16,689 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:40:16,689 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:40:16,689 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:40:16,689 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:40:16,689 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:40:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-12-07 12:40:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:40:16,702 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:40:16,702 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:40:16,703 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:40:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:40:16,706 INFO L82 PathProgramCache]: Analyzing trace with hash 890892102, now seen corresponding path program 1 times [2019-12-07 12:40:16,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:40:16,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936472406] [2019-12-07 12:40:16,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:40:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:40:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:40:16,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936472406] [2019-12-07 12:40:16,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:40:16,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:40:16,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577500043] [2019-12-07 12:40:16,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:40:16,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:40:16,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:40:16,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:40:16,815 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-12-07 12:40:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:40:16,828 INFO L93 Difference]: Finished difference Result 64 states and 100 transitions. [2019-12-07 12:40:16,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:40:16,829 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 12:40:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:40:16,835 INFO L225 Difference]: With dead ends: 64 [2019-12-07 12:40:16,835 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 12:40:16,837 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:40:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 12:40:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 12:40:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 12:40:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-12-07 12:40:16,858 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 6 [2019-12-07 12:40:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:40:16,859 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-12-07 12:40:16,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:40:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-12-07 12:40:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:40:16,859 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:40:16,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:40:16,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:40:16,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:40:16,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1806883023, now seen corresponding path program 1 times [2019-12-07 12:40:16,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:40:16,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113026515] [2019-12-07 12:40:16,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:40:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:40:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:40:16,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113026515] [2019-12-07 12:40:16,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:40:16,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:40:16,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374087508] [2019-12-07 12:40:16,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:40:16,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:40:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:40:16,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:40:16,942 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2019-12-07 12:40:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:40:17,007 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2019-12-07 12:40:17,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:40:17,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 12:40:17,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:40:17,008 INFO L225 Difference]: With dead ends: 42 [2019-12-07 12:40:17,008 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 12:40:17,009 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:40:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 12:40:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-12-07 12:40:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 12:40:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-12-07 12:40:17,014 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2019-12-07 12:40:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:40:17,015 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-12-07 12:40:17,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:40:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-12-07 12:40:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:40:17,015 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:40:17,016 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:40:17,016 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:40:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:40:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash 706691337, now seen corresponding path program 1 times [2019-12-07 12:40:17,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:40:17,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64673572] [2019-12-07 12:40:17,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:40:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:40:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:40:17,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64673572] [2019-12-07 12:40:17,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:40:17,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:40:17,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946964653] [2019-12-07 12:40:17,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:40:17,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:40:17,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:40:17,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:40:17,057 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 3 states. [2019-12-07 12:40:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:40:17,074 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2019-12-07 12:40:17,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:40:17,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 12:40:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:40:17,076 INFO L225 Difference]: With dead ends: 71 [2019-12-07 12:40:17,076 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 12:40:17,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:40:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 12:40:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2019-12-07 12:40:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 12:40:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-12-07 12:40:17,081 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 10 [2019-12-07 12:40:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:40:17,081 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-12-07 12:40:17,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:40:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2019-12-07 12:40:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 12:40:17,081 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:40:17,081 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:40:17,082 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:40:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:40:17,082 INFO L82 PathProgramCache]: Analyzing trace with hash -84804677, now seen corresponding path program 1 times [2019-12-07 12:40:17,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:40:17,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333143832] [2019-12-07 12:40:17,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:40:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:40:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:40:17,132 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:40:17,132 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:40:17,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:40:17 BoogieIcfgContainer [2019-12-07 12:40:17,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:40:17,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:40:17,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:40:17,150 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:40:17,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:40:16" (3/4) ... [2019-12-07 12:40:17,152 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 12:40:17,180 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_adeca9df-4bd2-4201-bcc7-58353fea5979/bin/uautomizer/witness.graphml [2019-12-07 12:40:17,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:40:17,182 INFO L168 Benchmark]: Toolchain (without parser) took 1149.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 935.3 MB in the beginning and 982.0 MB in the end (delta: -46.7 MB). Peak memory consumption was 40.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:17,182 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:40:17,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -136.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:17,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:40:17,183 INFO L168 Benchmark]: Boogie Preprocessor took 21.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:17,184 INFO L168 Benchmark]: RCFGBuilder took 252.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:17,184 INFO L168 Benchmark]: TraceAbstraction took 497.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 982.0 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:17,185 INFO L168 Benchmark]: Witness Printer took 30.30 ms. Allocated memory is still 1.1 GB. Free memory is still 982.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:40:17,187 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 314.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -136.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 252.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 497.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 982.0 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. * Witness Printer took 30.30 ms. Allocated memory is still 1.1 GB. Free memory is still 982.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) [L1021] EXPR x->data [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 44 SDslu, 49 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, 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, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...