./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8409443a6b8db5c0500e3e8aa54c33463c524ec9 ............................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 17:38:52,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:38:52,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:38:52,096 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:38:52,096 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:38:52,097 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:38:52,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:38:52,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:38:52,100 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:38:52,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:38:52,102 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:38:52,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:38:52,103 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:38:52,104 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:38:52,105 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:38:52,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:38:52,106 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:38:52,108 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:38:52,109 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:38:52,110 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:38:52,111 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:38:52,112 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:38:52,114 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:38:52,114 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:38:52,114 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:38:52,115 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:38:52,116 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:38:52,116 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:38:52,117 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:38:52,117 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:38:52,118 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:38:52,119 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:38:52,119 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:38:52,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:38:52,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:38:52,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:38:52,121 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:38:52,131 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:38:52,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:38:52,132 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:38:52,132 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:38:52,132 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:38:52,133 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:38:52,133 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:38:52,133 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:38:52,133 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:38:52,133 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:38:52,133 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:38:52,133 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:38:52,134 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:38:52,135 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:38:52,136 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:38:52,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:38:52,136 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:38:52,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:38:52,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:38:52,136 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:38:52,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:38:52,137 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:38:52,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:38:52,137 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:38:52,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:38:52,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:38:52,138 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:38:52,138 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:38:52,138 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:38:52,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:38:52,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:38:52,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:38:52,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:38:52,139 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:38:52,139 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:38:52,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:38:52,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:38:52,139 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan 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 -> Taipan 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 -> 8409443a6b8db5c0500e3e8aa54c33463c524ec9 [2018-11-18 17:38:52,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:38:52,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:38:52,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:38:52,180 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:38:52,180 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:38:52,181 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/../../sv-benchmarks/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:38:52,231 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/data/137a9cb88/325bff130264442a8e2a0dc0c9c72ce7/FLAG264ca91ff [2018-11-18 17:38:52,575 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:38:52,575 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/sv-benchmarks/c/forester-heap/dll-optional_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:38:52,582 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/data/137a9cb88/325bff130264442a8e2a0dc0c9c72ce7/FLAG264ca91ff [2018-11-18 17:38:52,973 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/data/137a9cb88/325bff130264442a8e2a0dc0c9c72ce7 [2018-11-18 17:38:52,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:38:52,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:38:52,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:38:52,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:38:52,985 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:38:52,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:38:52" (1/1) ... [2018-11-18 17:38:52,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733d1aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:52, skipping insertion in model container [2018-11-18 17:38:52,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:38:52" (1/1) ... [2018-11-18 17:38:52,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:38:53,039 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:38:53,304 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:38:53,320 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:38:53,365 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:38:53,461 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:38:53,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53 WrapperNode [2018-11-18 17:38:53,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:38:53,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:38:53,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:38:53,463 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:38:53,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:38:53,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:38:53,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:38:53,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:38:53,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... [2018-11-18 17:38:53,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:38:53,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:38:53,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:38:53,534 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:38:53,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/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 [2018-11-18 17:38:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:38:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:38:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:38:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:38:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:38:53,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:38:53,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:38:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 17:38:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 17:38:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:38:53,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:38:53,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:38:53,910 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:38:53,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:38:53 BoogieIcfgContainer [2018-11-18 17:38:53,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:38:53,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:38:53,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:38:53,913 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:38:53,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:38:52" (1/3) ... [2018-11-18 17:38:53,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45153e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:38:53, skipping insertion in model container [2018-11-18 17:38:53,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:38:53" (2/3) ... [2018-11-18 17:38:53,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45153e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:38:53, skipping insertion in model container [2018-11-18 17:38:53,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:38:53" (3/3) ... [2018-11-18 17:38:53,915 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-optional_false-unreach-call_false-valid-memcleanup.i [2018-11-18 17:38:53,922 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:38:53,928 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:38:53,938 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:38:53,962 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:38:53,963 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:38:53,963 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:38:53,963 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:38:53,963 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:38:53,963 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:38:53,963 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:38:53,963 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:38:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-11-18 17:38:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 17:38:53,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:38:53,983 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:38:53,985 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:38:53,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:38:53,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1666348370, now seen corresponding path program 1 times [2018-11-18 17:38:53,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:38:54,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:38:54,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:38:54,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:38:54,028 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:38:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:38:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:38:54,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:38:54,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:38:54,100 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:38:54,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:38:54,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:38:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:38:54,115 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-11-18 17:38:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:38:54,129 INFO L93 Difference]: Finished difference Result 54 states and 76 transitions. [2018-11-18 17:38:54,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:38:54,130 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-18 17:38:54,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:38:54,137 INFO L225 Difference]: With dead ends: 54 [2018-11-18 17:38:54,138 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 17:38:54,140 INFO L604 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 [2018-11-18 17:38:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 17:38:54,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 17:38:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 17:38:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-11-18 17:38:54,165 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 16 [2018-11-18 17:38:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:38:54,166 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-11-18 17:38:54,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:38:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2018-11-18 17:38:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 17:38:54,166 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:38:54,170 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:38:54,171 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:38:54,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:38:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash -730738241, now seen corresponding path program 1 times [2018-11-18 17:38:54,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:38:54,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:38:54,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:38:54,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:38:54,173 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:38:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:38:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:38:54,272 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:38:54,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:38:54 BoogieIcfgContainer [2018-11-18 17:38:54,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:38:54,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:38:54,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:38:54,295 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:38:54,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:38:53" (3/4) ... [2018-11-18 17:38:54,297 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:38:54,326 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_23ecf5f5-422a-4b50-90b1-6788545d07ae/bin-2019/utaipan/witness.graphml [2018-11-18 17:38:54,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:38:54,327 INFO L168 Benchmark]: Toolchain (without parser) took 1349.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 957.0 MB in the beginning and 1.1 GB in the end (delta: -122.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,327 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:38:54,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 957.0 MB in the beginning and 1.1 GB in the end (delta: -182.9 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.54 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,329 INFO L168 Benchmark]: Boogie Preprocessor took 34.64 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,329 INFO L168 Benchmark]: RCFGBuilder took 376.46 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,329 INFO L168 Benchmark]: TraceAbstraction took 383.58 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,330 INFO L168 Benchmark]: Witness Printer took 31.39 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:38:54,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 482.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.9 MB). Free memory was 957.0 MB in the beginning and 1.1 GB in the end (delta: -182.9 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.54 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.64 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 376.46 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 383.58 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Witness Printer took 31.39 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 998]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] EXPR, FCALL malloc(sizeof(SLL)) [L986] SLL* head = malloc(sizeof(SLL)); [L987] FCALL head->next = ((void*)0) [L988] FCALL head->prev = ((void*)0) [L989] COND TRUE __VERIFIER_nondet_int() [L989] FCALL head->data = 2 [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] FCALL head->opt = malloc(sizeof(SLL)) [L989] EXPR, FCALL head->opt [L989] FCALL head->opt->next = ((void*)0) [L990] SLL* x = head; VAL [head={19:0}, malloc(sizeof(SLL))={19:0}, malloc(sizeof(SLL))={18:0}, x={19:0}] [L992] COND FALSE !(__VERIFIER_nondet_int()) [L995] x = head VAL [head={19:0}, malloc(sizeof(SLL))={19:0}, malloc(sizeof(SLL))={18:0}, x={19:0}] [L996] COND TRUE x != ((void*)0) VAL [head={19:0}, malloc(sizeof(SLL))={19:0}, malloc(sizeof(SLL))={18:0}, x={19:0}] [L998] EXPR, FCALL x->data [L998] EXPR x->data == 2 && x->opt == x [L998] EXPR, FCALL x->opt [L998] EXPR x->data == 2 && x->opt == x VAL [head={19:0}, malloc(sizeof(SLL))={19:0}, malloc(sizeof(SLL))={18:0}, x={19:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={18:0}] [L998] COND TRUE !(x->data == 2 && x->opt == x) [L998] __VERIFIER_error() VAL [head={19:0}, malloc(sizeof(SLL))={19:0}, malloc(sizeof(SLL))={18:0}, x={19:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 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=34occurred 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, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 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...