./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/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 e3a489f7129360e0c39ec0afee423ecedf527b07 ........................................................................................................................................................................................................................................................................................................ 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 0.1.23-635dfa2 [2018-12-01 07:53:13,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 07:53:13,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 07:53:13,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 07:53:13,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 07:53:13,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 07:53:13,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 07:53:13,393 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 07:53:13,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 07:53:13,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 07:53:13,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 07:53:13,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 07:53:13,396 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 07:53:13,396 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 07:53:13,397 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 07:53:13,397 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 07:53:13,398 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 07:53:13,399 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 07:53:13,400 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 07:53:13,401 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 07:53:13,401 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 07:53:13,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 07:53:13,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 07:53:13,403 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 07:53:13,403 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 07:53:13,404 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 07:53:13,404 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 07:53:13,405 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 07:53:13,405 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 07:53:13,406 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 07:53:13,406 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 07:53:13,406 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 07:53:13,407 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 07:53:13,407 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 07:53:13,407 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 07:53:13,408 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 07:53:13,408 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 07:53:13,415 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 07:53:13,415 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 07:53:13,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 07:53:13,416 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 07:53:13,416 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 07:53:13,416 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 07:53:13,416 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 07:53:13,417 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 07:53:13,417 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 07:53:13,418 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 07:53:13,418 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 07:53:13,418 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 07:53:13,418 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 07:53:13,418 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 07:53:13,418 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 07:53:13,418 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 07:53:13,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 07:53:13,419 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 07:53:13,419 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 07:53:13,419 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 07:53:13,419 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 07:53:13,419 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 07:53:13,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 07:53:13,419 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_17c532e0-6e49-48fa-b096-04cdada2dae0/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 -> e3a489f7129360e0c39ec0afee423ecedf527b07 [2018-12-01 07:53:13,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 07:53:13,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 07:53:13,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 07:53:13,448 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 07:53:13,448 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 07:53:13,448 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext-properties/list-ext_false-unreach-call_false-valid-deref.i [2018-12-01 07:53:13,483 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/data/0d21b9f0b/b57f8d6ea8324ba8b16bbbe59e4622a6/FLAGfb0c543fe [2018-12-01 07:53:13,957 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 07:53:13,957 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/sv-benchmarks/c/list-ext-properties/list-ext_false-unreach-call_false-valid-deref.i [2018-12-01 07:53:13,963 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/data/0d21b9f0b/b57f8d6ea8324ba8b16bbbe59e4622a6/FLAGfb0c543fe [2018-12-01 07:53:14,310 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/data/0d21b9f0b/b57f8d6ea8324ba8b16bbbe59e4622a6 [2018-12-01 07:53:14,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 07:53:14,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 07:53:14,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 07:53:14,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 07:53:14,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 07:53:14,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a04c23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14, skipping insertion in model container [2018-12-01 07:53:14,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 07:53:14,340 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 07:53:14,482 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 07:53:14,488 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 07:53:14,547 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 07:53:14,567 INFO L195 MainTranslator]: Completed translation [2018-12-01 07:53:14,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14 WrapperNode [2018-12-01 07:53:14,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 07:53:14,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 07:53:14,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 07:53:14,569 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 07:53:14,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 07:53:14,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 07:53:14,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 07:53:14,587 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 07:53:14,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... [2018-12-01 07:53:14,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 07:53:14,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 07:53:14,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 07:53:14,606 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 07:53:14,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/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 [2018-12-01 07:53:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 07:53:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 07:53:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 07:53:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 07:53:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 07:53:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 07:53:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 07:53:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 07:53:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 07:53:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 07:53:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 07:53:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 07:53:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 07:53:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 07:53:14,816 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 07:53:14,817 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-01 07:53:14,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:53:14 BoogieIcfgContainer [2018-12-01 07:53:14,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 07:53:14,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 07:53:14,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 07:53:14,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 07:53:14,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 07:53:14" (1/3) ... [2018-12-01 07:53:14,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40af46f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 07:53:14, skipping insertion in model container [2018-12-01 07:53:14,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:53:14" (2/3) ... [2018-12-01 07:53:14,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40af46f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 07:53:14, skipping insertion in model container [2018-12-01 07:53:14,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:53:14" (3/3) ... [2018-12-01 07:53:14,823 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_false-unreach-call_false-valid-deref.i [2018-12-01 07:53:14,831 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 07:53:14,837 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 07:53:14,850 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 07:53:14,872 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 07:53:14,872 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 07:53:14,872 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 07:53:14,872 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 07:53:14,873 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 07:53:14,873 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 07:53:14,873 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 07:53:14,873 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 07:53:14,873 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 07:53:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-01 07:53:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 07:53:14,889 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 07:53:14,890 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 07:53:14,891 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 07:53:14,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 07:53:14,895 INFO L82 PathProgramCache]: Analyzing trace with hash 138426937, now seen corresponding path program 1 times [2018-12-01 07:53:14,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 07:53:14,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 07:53:14,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 07:53:14,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 07:53:14,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 07:53:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 07:53:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 07:53:14,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 07:53:14,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 07:53:14,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 07:53:14,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 07:53:14,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 07:53:14,990 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-01 07:53:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 07:53:15,005 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2018-12-01 07:53:15,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 07:53:15,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-12-01 07:53:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 07:53:15,010 INFO L225 Difference]: With dead ends: 65 [2018-12-01 07:53:15,011 INFO L226 Difference]: Without dead ends: 27 [2018-12-01 07:53:15,013 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 [2018-12-01 07:53:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-01 07:53:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-01 07:53:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-01 07:53:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2018-12-01 07:53:15,035 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2018-12-01 07:53:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 07:53:15,035 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2018-12-01 07:53:15,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 07:53:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2018-12-01 07:53:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 07:53:15,036 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 07:53:15,036 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 07:53:15,037 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 07:53:15,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 07:53:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash -158120737, now seen corresponding path program 1 times [2018-12-01 07:53:15,037 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 07:53:15,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 07:53:15,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 07:53:15,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 07:53:15,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 07:53:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 07:53:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 07:53:15,095 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 07:53:15,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 07:53:15 BoogieIcfgContainer [2018-12-01 07:53:15,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 07:53:15,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 07:53:15,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 07:53:15,118 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 07:53:15,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:53:14" (3/4) ... [2018-12-01 07:53:15,119 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 07:53:15,146 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_17c532e0-6e49-48fa-b096-04cdada2dae0/bin-2019/uautomizer/witness.graphml [2018-12-01 07:53:15,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 07:53:15,147 INFO L168 Benchmark]: Toolchain (without parser) took 834.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 950.6 MB in the beginning and 1.0 GB in the end (delta: -98.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-12-01 07:53:15,148 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 07:53:15,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2018-12-01 07:53:15,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.88 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. [2018-12-01 07:53:15,149 INFO L168 Benchmark]: Boogie Preprocessor took 19.07 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. [2018-12-01 07:53:15,149 INFO L168 Benchmark]: RCFGBuilder took 211.45 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2018-12-01 07:53:15,149 INFO L168 Benchmark]: TraceAbstraction took 299.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2018-12-01 07:53:15,149 INFO L168 Benchmark]: Witness Printer took 29.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 07:53:15,151 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.88 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 19.07 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 211.45 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 299.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Witness Printer took 29.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 662]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int i = 0; [L628] int y = 0; [L629] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, y=0] [L630] COND FALSE !(a == 0) VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, y=0] [L631] List t; [L632] List p = a; VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, y=0] [L633] i < 10 && __VERIFIER_nondet_int() [L633] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={10:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={10:0}, p={10:0}, y=0] [L633] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L641] y < 10 && __VERIFIER_nondet_int() [L641] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L641] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L649] p->h = 3 [L650] i = 0 [L651] y = 0 [L652] p = a VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, y=0] [L653] EXPR p->h VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3, y=0] [L653] COND FALSE !(p->h == 1) [L657] EXPR p->h VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3, y=0] [L657] COND FALSE !(p->h == 2) [L661] EXPR p->h VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3, y=0] [L661] COND TRUE p->h != 3 || (i + y) < 20 [L662] __VERIFIER_error() VAL [a={10:0}, i=0, malloc(sizeof(struct node))={10:0}, p={10:0}, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 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=40occurred 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, 38 NumberOfCodeBlocks, 38 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...