./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/recursive_list.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/recursive_list.i -s /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/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 3d5040117e2eabdebb8b19ac037d1eb680a830cf ........................................................................................................................................................................................................................................................ 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 0.1.24-678e011 [2019-11-19 23:22:43,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:22:43,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:22:43,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:22:43,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:22:43,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:22:43,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:22:43,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:22:43,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:22:43,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:22:43,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:22:43,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:22:43,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:22:43,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:22:43,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:22:43,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:22:43,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:22:43,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:22:43,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:22:43,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:22:43,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:22:43,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:22:43,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:22:43,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:22:43,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:22:43,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:22:43,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:22:43,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:22:43,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:22:43,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:22:43,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:22:43,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:22:43,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:22:43,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:22:43,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:22:43,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:22:43,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:22:43,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:22:43,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:22:43,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:22:43,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:22:43,392 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 23:22:43,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:22:43,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:22:43,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:22:43,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:22:43,410 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:22:43,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:22:43,410 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:22:43,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:22:43,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:22:43,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:22:43,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:22:43,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:22:43,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:22:43,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:22:43,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:22:43,413 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:22:43,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:22:43,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:22:43,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:22:43,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:22:43,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:22:43,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:22:43,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:22:43,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:22:43,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:22:43,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:22:43,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:22:43,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:22:43,416 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_99a64e7d-09a3-419e-bf33-c2407f0895e2/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 -> 3d5040117e2eabdebb8b19ac037d1eb680a830cf [2019-11-19 23:22:43,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:22:43,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:22:43,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:22:43,635 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:22:43,635 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:22:43,636 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/recursive_list.i [2019-11-19 23:22:43,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/data/4ba60d9c5/56951d0a050e480d919d6112cd8cf5c7/FLAGd9defc183 [2019-11-19 23:22:44,065 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:22:44,065 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/sv-benchmarks/c/ldv-regression/recursive_list.i [2019-11-19 23:22:44,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/data/4ba60d9c5/56951d0a050e480d919d6112cd8cf5c7/FLAGd9defc183 [2019-11-19 23:22:44,505 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/data/4ba60d9c5/56951d0a050e480d919d6112cd8cf5c7 [2019-11-19 23:22:44,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:22:44,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:22:44,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:22:44,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:22:44,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:22:44,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b3a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44, skipping insertion in model container [2019-11-19 23:22:44,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,526 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:22:44,543 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:22:44,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:22:44,874 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:22:44,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:22:44,907 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:22:44,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44 WrapperNode [2019-11-19 23:22:44,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:22:44,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:22:44,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:22:44,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:22:44,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:22:44,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:22:44,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:22:44,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:22:44,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... [2019-11-19 23:22:44,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:22:44,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:22:44,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:22:44,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:22:44,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/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 [2019-11-19 23:22:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 23:22:45,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 23:22:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 23:22:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 23:22:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 23:22:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:22:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:22:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 23:22:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:22:45,349 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:22:45,349 INFO L285 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-19 23:22:45,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:22:45 BoogieIcfgContainer [2019-11-19 23:22:45,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:22:45,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:22:45,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:22:45,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:22:45,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:22:44" (1/3) ... [2019-11-19 23:22:45,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc4f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:22:45, skipping insertion in model container [2019-11-19 23:22:45,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:22:44" (2/3) ... [2019-11-19 23:22:45,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc4f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:22:45, skipping insertion in model container [2019-11-19 23:22:45,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:22:45" (3/3) ... [2019-11-19 23:22:45,359 INFO L109 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2019-11-19 23:22:45,370 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:22:45,377 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 23:22:45,390 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 23:22:45,417 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:22:45,418 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:22:45,418 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:22:45,419 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:22:45,419 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:22:45,419 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:22:45,419 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:22:45,419 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:22:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-19 23:22:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 23:22:45,441 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:22:45,442 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:22:45,443 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:22:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:22:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash 87858985, now seen corresponding path program 1 times [2019-11-19 23:22:45,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:22:45,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562125054] [2019-11-19 23:22:45,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:22:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:22:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:22:45,774 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:22:45,775 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 23:22:45,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:22:45 BoogieIcfgContainer [2019-11-19 23:22:45,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:22:45,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:22:45,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:22:45,809 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:22:45,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:22:45" (3/4) ... [2019-11-19 23:22:45,812 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 23:22:45,867 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99a64e7d-09a3-419e-bf33-c2407f0895e2/bin/uautomizer/witness.graphml [2019-11-19 23:22:45,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:22:45,869 INFO L168 Benchmark]: Toolchain (without parser) took 1360.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -118.9 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:22:45,870 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:22:45,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:22:45,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:22:45,871 INFO L168 Benchmark]: Boogie Preprocessor took 24.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:22:45,872 INFO L168 Benchmark]: RCFGBuilder took 378.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:22:45,872 INFO L168 Benchmark]: TraceAbstraction took 456.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:22:45,873 INFO L168 Benchmark]: Witness Printer took 59.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:22:45,875 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 396.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 378.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 456.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Witness Printer took 59.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i = 1; VAL [i=1] [L37] struct list *l,m; [L38] l = &m [L39] l->next = 0 [L40] l->n = 0 [L25] struct list *new_el; [L20] return malloc(8U); VAL [i=1] [L27] new_el = allocate_memory() [L29] new_el->n = n [L30] new_el->next = l [L32] return new_el; VAL [i=1] [L42] l = append(l, 1) [L25] struct list *new_el; [L20] return malloc(8U); VAL [i=1] [L27] new_el = allocate_memory() [L29] new_el->n = n [L30] new_el->next = l [L32] return new_el; VAL [i=1] [L43] l = append(l, 2) [L48] EXPR l->next [L48] EXPR l->next->next [L48] EXPR l->next->next->n VAL [i=1] [L48] COND TRUE l->next->next->n == 0 [L8] __VERIFIER_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...