./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.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_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/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 3d1a973dcd7009ffcd2eda1338249f4d290fb62a ....................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2018-12-02 19:07:29,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 19:07:29,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 19:07:29,367 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 19:07:29,367 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 19:07:29,368 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 19:07:29,369 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 19:07:29,370 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 19:07:29,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 19:07:29,372 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 19:07:29,373 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 19:07:29,373 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 19:07:29,373 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 19:07:29,374 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 19:07:29,375 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 19:07:29,375 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 19:07:29,376 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 19:07:29,377 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 19:07:29,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 19:07:29,380 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 19:07:29,380 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 19:07:29,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 19:07:29,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 19:07:29,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 19:07:29,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 19:07:29,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 19:07:29,384 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 19:07:29,385 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 19:07:29,386 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 19:07:29,386 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 19:07:29,387 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 19:07:29,387 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 19:07:29,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 19:07:29,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 19:07:29,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 19:07:29,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 19:07:29,389 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 19:07:29,396 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 19:07:29,396 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 19:07:29,397 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 19:07:29,397 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 19:07:29,397 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 19:07:29,398 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 19:07:29,398 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 19:07:29,399 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 19:07:29,399 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 19:07:29,399 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 19:07:29,399 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 19:07:29,400 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 19:07:29,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 19:07:29,401 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 19:07:29,401 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 19:07:29,402 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 19:07:29,402 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 19:07:29,402 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 19:07:29,402 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_f893f1a1-2528-4d01-b56d-256d6e8dfb98/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 -> 3d1a973dcd7009ffcd2eda1338249f4d290fb62a [2018-12-02 19:07:29,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 19:07:29,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 19:07:29,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 19:07:29,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 19:07:29,432 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 19:07:29,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-12-02 19:07:29,467 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/data/2908d68c9/cfef86db6131438191dc45030d4d00cd/FLAG14106ff97 [2018-12-02 19:07:29,934 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 19:07:29,935 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-12-02 19:07:29,941 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/data/2908d68c9/cfef86db6131438191dc45030d4d00cd/FLAG14106ff97 [2018-12-02 19:07:30,295 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/data/2908d68c9/cfef86db6131438191dc45030d4d00cd [2018-12-02 19:07:30,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 19:07:30,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 19:07:30,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 19:07:30,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 19:07:30,300 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 19:07:30,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56412a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30, skipping insertion in model container [2018-12-02 19:07:30,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 19:07:30,338 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 19:07:30,495 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:07:30,536 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 19:07:30,568 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 19:07:30,597 INFO L195 MainTranslator]: Completed translation [2018-12-02 19:07:30,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30 WrapperNode [2018-12-02 19:07:30,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 19:07:30,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 19:07:30,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 19:07:30,598 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 19:07:30,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 19:07:30,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 19:07:30,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 19:07:30,616 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 19:07:30,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... [2018-12-02 19:07:30,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 19:07:30,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 19:07:30,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 19:07:30,639 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 19:07:30,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/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 [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 19:07:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 19:07:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 19:07:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 19:07:30,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 19:07:30,912 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 19:07:30,912 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-12-02 19:07:30,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:30 BoogieIcfgContainer [2018-12-02 19:07:30,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 19:07:30,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 19:07:30,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 19:07:30,916 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 19:07:30,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:07:30" (1/3) ... [2018-12-02 19:07:30,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3390e1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:07:30, skipping insertion in model container [2018-12-02 19:07:30,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:30" (2/3) ... [2018-12-02 19:07:30,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3390e1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:07:30, skipping insertion in model container [2018-12-02 19:07:30,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:30" (3/3) ... [2018-12-02 19:07:30,919 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-12-02 19:07:30,927 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 19:07:30,933 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-02 19:07:30,943 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-02 19:07:30,960 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 19:07:30,961 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 19:07:30,961 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 19:07:30,961 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 19:07:30,961 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 19:07:30,961 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 19:07:30,961 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 19:07:30,961 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 19:07:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-12-02 19:07:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 19:07:30,974 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:07:30,975 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:07:30,976 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:07:30,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:07:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1783331453, now seen corresponding path program 1 times [2018-12-02 19:07:30,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:07:31,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:07:31,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,015 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:07:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:07:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:07:31,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:07:31,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 19:07:31,062 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 19:07:31,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 19:07:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 19:07:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 19:07:31,073 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2018-12-02 19:07:31,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:07:31,087 INFO L93 Difference]: Finished difference Result 112 states and 178 transitions. [2018-12-02 19:07:31,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 19:07:31,088 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-02 19:07:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:07:31,093 INFO L225 Difference]: With dead ends: 112 [2018-12-02 19:07:31,093 INFO L226 Difference]: Without dead ends: 54 [2018-12-02 19:07:31,095 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 [2018-12-02 19:07:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-02 19:07:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-12-02 19:07:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-12-02 19:07:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-12-02 19:07:31,117 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2018-12-02 19:07:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:07:31,117 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-12-02 19:07:31,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 19:07:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-12-02 19:07:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 19:07:31,117 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:07:31,117 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:07:31,118 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:07:31,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:07:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -569388701, now seen corresponding path program 1 times [2018-12-02 19:07:31,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:07:31,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:07:31,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,119 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:07:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:07:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 19:07:31,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:07:31,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-02 19:07:31,148 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 19:07:31,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-02 19:07:31,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 19:07:31,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 19:07:31,149 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 3 states. [2018-12-02 19:07:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:07:31,174 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2018-12-02 19:07:31,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 19:07:31,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-02 19:07:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:07:31,175 INFO L225 Difference]: With dead ends: 107 [2018-12-02 19:07:31,175 INFO L226 Difference]: Without dead ends: 59 [2018-12-02 19:07:31,176 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 19:07:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-12-02 19:07:31,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2018-12-02 19:07:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-12-02 19:07:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2018-12-02 19:07:31,179 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2018-12-02 19:07:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:07:31,180 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2018-12-02 19:07:31,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-02 19:07:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2018-12-02 19:07:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 19:07:31,180 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:07:31,180 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:07:31,180 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:07:31,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:07:31,181 INFO L82 PathProgramCache]: Analyzing trace with hash -846164232, now seen corresponding path program 1 times [2018-12-02 19:07:31,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:07:31,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:07:31,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:07:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 19:07:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 19:07:31,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 19:07:31,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 19:07:31,220 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 19:07:31,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 19:07:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 19:07:31,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 19:07:31,221 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 4 states. [2018-12-02 19:07:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 19:07:31,287 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2018-12-02 19:07:31,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 19:07:31,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-12-02 19:07:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 19:07:31,288 INFO L225 Difference]: With dead ends: 91 [2018-12-02 19:07:31,288 INFO L226 Difference]: Without dead ends: 89 [2018-12-02 19:07:31,288 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 19:07:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-12-02 19:07:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2018-12-02 19:07:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-02 19:07:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2018-12-02 19:07:31,292 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2018-12-02 19:07:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 19:07:31,292 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2018-12-02 19:07:31,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 19:07:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2018-12-02 19:07:31,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 19:07:31,293 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 19:07:31,293 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 19:07:31,293 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 19:07:31,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 19:07:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash 936567374, now seen corresponding path program 1 times [2018-12-02 19:07:31,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 19:07:31,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 19:07:31,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 19:07:31,294 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 19:07:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 19:07:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 19:07:31,346 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 19:07:31,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:07:31 BoogieIcfgContainer [2018-12-02 19:07:31,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 19:07:31,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 19:07:31,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 19:07:31,366 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 19:07:31,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:30" (3/4) ... [2018-12-02 19:07:31,368 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 19:07:31,398 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f893f1a1-2528-4d01-b56d-256d6e8dfb98/bin-2019/utaipan/witness.graphml [2018-12-02 19:07:31,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 19:07:31,398 INFO L168 Benchmark]: Toolchain (without parser) took 1100.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -69.8 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. [2018-12-02 19:07:31,399 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 19:07:31,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-12-02 19:07:31,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.55 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. [2018-12-02 19:07:31,400 INFO L168 Benchmark]: Boogie Preprocessor took 23.18 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. [2018-12-02 19:07:31,400 INFO L168 Benchmark]: RCFGBuilder took 274.22 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2018-12-02 19:07:31,400 INFO L168 Benchmark]: TraceAbstraction took 452.08 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: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. [2018-12-02 19:07:31,401 INFO L168 Benchmark]: Witness Printer took 31.94 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. [2018-12-02 19:07:31,402 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 299.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.55 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 23.18 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 274.22 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 452.08 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: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 11.5 GB. * Witness Printer took 31.94 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: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, marked=0, x={21:0}] [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=1, x={19:0}] [L1008] COND TRUE \read(marked) [L1009] x->data = 1 VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=1, x={19:0}] [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=1, x={21:0}] [L1016] COND FALSE !(!(((void*)0) != x)) VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=1, x={21:0}] [L1017] marked = 0 VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=0, x={21:0}] [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=0, x={21:0}, x->next={19:0}, x->next={19:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=0, x={21:0}, x->next={19:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=0, x={19:0}, x->data=1] [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() VAL [head={21:0}, malloc(sizeof(SLL))={21:0}, malloc(sizeof(SLL))={19:0}, marked=0, x={19:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 6 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 155 SDslu, 63 SDs, 0 SdLazy, 50 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...