./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/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 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc ............................................................................................................................................................................................................................................................................................. 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 0.1.23-0cd3be1 [2018-11-28 13:19:17,954 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:19:17,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:19:17,963 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:19:17,963 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:19:17,964 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:19:17,965 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:19:17,966 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:19:17,967 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:19:17,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:19:17,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:19:17,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:19:17,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:19:17,970 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:19:17,971 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:19:17,971 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:19:17,972 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:19:17,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:19:17,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:19:17,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:19:17,976 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:19:17,977 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:19:17,979 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:19:17,979 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:19:17,979 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:19:17,980 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:19:17,980 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:19:17,981 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:19:17,981 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:19:17,982 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:19:17,982 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:19:17,983 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:19:17,983 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:19:17,983 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:19:17,983 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:19:17,984 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:19:17,984 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:19:17,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:19:17,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:19:17,991 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:19:17,991 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:19:17,991 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:19:17,992 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:19:17,992 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:19:17,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:19:17,992 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:19:17,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:19:17,992 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:19:17,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:19:17,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:19:17,994 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:19:17,994 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:19:17,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:19:17,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:19:17,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:19:17,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:19:17,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:19:17,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:19:17,995 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:19:17,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:19:17,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:19:17,995 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/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 -> 9782fe34c3bae6ab09bbe7588de1b0d436c1fccc [2018-11-28 13:19:18,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:19:18,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:19:18,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:19:18,030 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:19:18,030 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:19:18,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i [2018-11-28 13:19:18,067 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/data/16e63659b/0fb58946e4874d53a8dd0f4123952a5e/FLAGb53c67a8a [2018-11-28 13:19:18,506 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:19:18,506 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/sv-benchmarks/c/forester-heap/sll-optional_false-unreach-call_false-valid-memcleanup.i [2018-11-28 13:19:18,515 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/data/16e63659b/0fb58946e4874d53a8dd0f4123952a5e/FLAGb53c67a8a [2018-11-28 13:19:18,525 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/data/16e63659b/0fb58946e4874d53a8dd0f4123952a5e [2018-11-28 13:19:18,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:19:18,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:19:18,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:19:18,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:19:18,531 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:19:18,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceba226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18, skipping insertion in model container [2018-11-28 13:19:18,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:19:18,565 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:19:18,741 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:19:18,791 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:19:18,823 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:19:18,855 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:19:18,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18 WrapperNode [2018-11-28 13:19:18,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:19:18,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:19:18,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:19:18,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:19:18,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:19:18,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:19:18,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:19:18,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:19:18,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... [2018-11-28 13:19:18,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:19:18,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:19:18,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:19:18,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:19:18,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/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 [2018-11-28 13:19:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 13:19:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 13:19:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 13:19:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:19:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:19:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:19:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:19:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 13:19:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 13:19:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 13:19:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:19:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:19:19,216 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:19:19,216 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 13:19:19,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:19:19 BoogieIcfgContainer [2018-11-28 13:19:19,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:19:19,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:19:19,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:19:19,220 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:19:19,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:19:18" (1/3) ... [2018-11-28 13:19:19,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa3a65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:19:19, skipping insertion in model container [2018-11-28 13:19:19,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:19:18" (2/3) ... [2018-11-28 13:19:19,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa3a65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:19:19, skipping insertion in model container [2018-11-28 13:19:19,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:19:19" (3/3) ... [2018-11-28 13:19:19,223 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-optional_false-unreach-call_false-valid-memcleanup.i [2018-11-28 13:19:19,229 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:19:19,233 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:19:19,243 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:19:19,268 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:19:19,268 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:19:19,268 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:19:19,268 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:19:19,269 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:19:19,269 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:19:19,269 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:19:19,269 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:19:19,269 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:19:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-28 13:19:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 13:19:19,288 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:19:19,289 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:19:19,291 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:19:19,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:19:19,295 INFO L82 PathProgramCache]: Analyzing trace with hash 90778063, now seen corresponding path program 1 times [2018-11-28 13:19:19,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:19:19,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:19:19,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:19:19,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:19:19,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:19:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:19:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:19:19,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:19:19,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:19:19,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 13:19:19,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 13:19:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 13:19:19,431 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-28 13:19:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:19:19,445 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2018-11-28 13:19:19,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:19:19,445 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-28 13:19:19,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:19:19,452 INFO L225 Difference]: With dead ends: 49 [2018-11-28 13:19:19,452 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 13:19:19,454 INFO L631 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 [2018-11-28 13:19:19,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 13:19:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-28 13:19:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 13:19:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2018-11-28 13:19:19,477 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2018-11-28 13:19:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:19:19,477 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2018-11-28 13:19:19,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 13:19:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2018-11-28 13:19:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:19:19,478 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:19:19,478 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:19:19,478 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:19:19,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:19:19,479 INFO L82 PathProgramCache]: Analyzing trace with hash -955807242, now seen corresponding path program 1 times [2018-11-28 13:19:19,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:19:19,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:19:19,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:19:19,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:19:19,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:19:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:19:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:19:19,541 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 13:19:19,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:19:19 BoogieIcfgContainer [2018-11-28 13:19:19,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:19:19,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:19:19,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:19:19,560 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:19:19,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:19:19" (3/4) ... [2018-11-28 13:19:19,563 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 13:19:19,590 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bef53c8a-73d0-4f8d-8ad1-ca0509c80e3c/bin-2019/uautomizer/witness.graphml [2018-11-28 13:19:19,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:19:19,591 INFO L168 Benchmark]: Toolchain (without parser) took 1062.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -119.5 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:19,591 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:19:19,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:19,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.06 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. [2018-11-28 13:19:19,592 INFO L168 Benchmark]: Boogie Preprocessor took 20.26 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:19,592 INFO L168 Benchmark]: RCFGBuilder took 320.57 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:19,593 INFO L168 Benchmark]: TraceAbstraction took 342.86 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:19,593 INFO L168 Benchmark]: Witness Printer took 29.87 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:19:19,595 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -191.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.06 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 20.26 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 320.57 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 342.86 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * Witness Printer took 29.87 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 2 [L987] head->opt = malloc(sizeof(SLL)) [L987] EXPR head->opt [L987] head->opt->next = ((void*)0) [L988] SLL* x = head; VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={15:0}, x={18:0}] [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={15:0}, x={18:0}] [L994] COND TRUE x != ((void*)0) VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={15:0}, x={18:0}] [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] EXPR x->opt [L996] EXPR x->data == 2 && x->opt == x VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={15:0}, x={18:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={15:0}] [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __VERIFIER_error() VAL [head={18:0}, malloc(sizeof(SLL))={18:0}, malloc(sizeof(SLL))={15:0}, x={18:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...