./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list_flag_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_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/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 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2018-12-09 17:21:44,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 17:21:44,516 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 17:21:44,522 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 17:21:44,522 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 17:21:44,523 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 17:21:44,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 17:21:44,524 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 17:21:44,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 17:21:44,525 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 17:21:44,526 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 17:21:44,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 17:21:44,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 17:21:44,527 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 17:21:44,527 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 17:21:44,527 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 17:21:44,528 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 17:21:44,529 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 17:21:44,530 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 17:21:44,530 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 17:21:44,531 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 17:21:44,531 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 17:21:44,532 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 17:21:44,532 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 17:21:44,532 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 17:21:44,533 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 17:21:44,533 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 17:21:44,534 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 17:21:44,534 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 17:21:44,535 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 17:21:44,535 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 17:21:44,535 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 17:21:44,535 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 17:21:44,535 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 17:21:44,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 17:21:44,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 17:21:44,536 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 17:21:44,543 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 17:21:44,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 17:21:44,544 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 17:21:44,544 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 17:21:44,544 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 17:21:44,545 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 17:21:44,545 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 17:21:44,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 17:21:44,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 17:21:44,546 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 17:21:44,547 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 17:21:44,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 17:21:44,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 17:21:44,547 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 17:21:44,547 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_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/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 -> 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff [2018-12-09 17:21:44,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 17:21:44,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 17:21:44,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 17:21:44,575 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 17:21:44,575 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 17:21:44,576 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-09 17:21:44,618 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/data/345a4782c/08f24f88cda14ea0ad90993337dca61e/FLAGee6b1391d [2018-12-09 17:21:45,019 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 17:21:45,019 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-09 17:21:45,026 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/data/345a4782c/08f24f88cda14ea0ad90993337dca61e/FLAGee6b1391d [2018-12-09 17:21:45,034 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/data/345a4782c/08f24f88cda14ea0ad90993337dca61e [2018-12-09 17:21:45,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 17:21:45,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 17:21:45,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 17:21:45,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 17:21:45,039 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 17:21:45,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567731c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45, skipping insertion in model container [2018-12-09 17:21:45,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 17:21:45,063 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 17:21:45,202 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:21:45,209 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 17:21:45,274 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 17:21:45,302 INFO L195 MainTranslator]: Completed translation [2018-12-09 17:21:45,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45 WrapperNode [2018-12-09 17:21:45,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 17:21:45,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 17:21:45,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 17:21:45,303 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 17:21:45,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 17:21:45,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 17:21:45,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 17:21:45,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 17:21:45,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... [2018-12-09 17:21:45,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 17:21:45,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 17:21:45,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 17:21:45,338 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 17:21:45,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/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 [2018-12-09 17:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 17:21:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 17:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 17:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 17:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 17:21:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 17:21:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 17:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 17:21:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 17:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 17:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 17:21:45,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 17:21:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 17:21:45,503 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 17:21:45,503 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 17:21:45,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:21:45 BoogieIcfgContainer [2018-12-09 17:21:45,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 17:21:45,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 17:21:45,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 17:21:45,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 17:21:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:21:45" (1/3) ... [2018-12-09 17:21:45,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2619011a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:21:45, skipping insertion in model container [2018-12-09 17:21:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:45" (2/3) ... [2018-12-09 17:21:45,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2619011a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:21:45, skipping insertion in model container [2018-12-09 17:21:45,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:21:45" (3/3) ... [2018-12-09 17:21:45,507 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-09 17:21:45,513 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 17:21:45,517 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 17:21:45,527 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 17:21:45,547 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 17:21:45,547 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 17:21:45,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 17:21:45,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 17:21:45,547 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 17:21:45,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 17:21:45,547 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 17:21:45,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 17:21:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-09 17:21:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 17:21:45,561 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:21:45,561 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:21:45,562 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:21:45,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:21:45,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1659708178, now seen corresponding path program 1 times [2018-12-09 17:21:45,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:21:45,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:21:45,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,596 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:21:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:21:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:21:45,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:21:45,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 17:21:45,644 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:21:45,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 17:21:45,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 17:21:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 17:21:45,655 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-09 17:21:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:21:45,668 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2018-12-09 17:21:45,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 17:21:45,668 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-12-09 17:21:45,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:21:45,673 INFO L225 Difference]: With dead ends: 46 [2018-12-09 17:21:45,673 INFO L226 Difference]: Without dead ends: 24 [2018-12-09 17:21:45,675 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 [2018-12-09 17:21:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-09 17:21:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-09 17:21:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 17:21:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-09 17:21:45,696 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2018-12-09 17:21:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:21:45,696 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-09 17:21:45,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 17:21:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-09 17:21:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 17:21:45,696 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:21:45,697 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:21:45,697 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:21:45,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:21:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1269377224, now seen corresponding path program 1 times [2018-12-09 17:21:45,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:21:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:21:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,698 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:21:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:21:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:21:45,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:21:45,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:21:45,752 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:21:45,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:21:45,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:21:45,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:21:45,753 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2018-12-09 17:21:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:21:45,817 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2018-12-09 17:21:45,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:21:45,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-09 17:21:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:21:45,818 INFO L225 Difference]: With dead ends: 48 [2018-12-09 17:21:45,818 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 17:21:45,818 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 17:21:45,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 17:21:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2018-12-09 17:21:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 17:21:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2018-12-09 17:21:45,822 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2018-12-09 17:21:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:21:45,823 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2018-12-09 17:21:45,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:21:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2018-12-09 17:21:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 17:21:45,823 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:21:45,823 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:21:45,823 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:21:45,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:21:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash 149476515, now seen corresponding path program 1 times [2018-12-09 17:21:45,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:21:45,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:21:45,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,824 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:21:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:21:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:21:45,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:21:45,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:21:45,867 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:21:45,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:21:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:21:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:21:45,868 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2018-12-09 17:21:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:21:45,918 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-12-09 17:21:45,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:21:45,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 17:21:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:21:45,919 INFO L225 Difference]: With dead ends: 50 [2018-12-09 17:21:45,920 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 17:21:45,920 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 17:21:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 17:21:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2018-12-09 17:21:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 17:21:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2018-12-09 17:21:45,924 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2018-12-09 17:21:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:21:45,924 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2018-12-09 17:21:45,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:21:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2018-12-09 17:21:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 17:21:45,924 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:21:45,925 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 17:21:45,925 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:21:45,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:21:45,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1094265006, now seen corresponding path program 1 times [2018-12-09 17:21:45,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:21:45,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:21:45,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:45,926 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:21:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 17:21:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 17:21:45,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 17:21:45,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 17:21:45,963 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 17:21:45,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 17:21:45,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 17:21:45,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 17:21:45,964 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2018-12-09 17:21:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 17:21:46,007 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-12-09 17:21:46,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 17:21:46,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 17:21:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 17:21:46,008 INFO L225 Difference]: With dead ends: 48 [2018-12-09 17:21:46,008 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 17:21:46,008 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 17:21:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 17:21:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-12-09 17:21:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-09 17:21:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-12-09 17:21:46,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2018-12-09 17:21:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 17:21:46,010 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-12-09 17:21:46,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 17:21:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-12-09 17:21:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 17:21:46,011 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 17:21:46,011 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] [2018-12-09 17:21:46,011 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 17:21:46,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 17:21:46,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1856827007, now seen corresponding path program 1 times [2018-12-09 17:21:46,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 17:21:46,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:46,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 17:21:46,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 17:21:46,012 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 17:21:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:21:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 17:21:46,049 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 17:21:46,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:21:46 BoogieIcfgContainer [2018-12-09 17:21:46,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 17:21:46,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 17:21:46,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 17:21:46,068 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 17:21:46,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:21:45" (3/4) ... [2018-12-09 17:21:46,069 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 17:21:46,097 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_09bd3e31-3fb0-41e6-9e47-b909e5eff9ce/bin-2019/utaipan/witness.graphml [2018-12-09 17:21:46,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 17:21:46,097 INFO L168 Benchmark]: Toolchain (without parser) took 1061.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 948.1 MB in the beginning and 983.1 MB in the end (delta: -35.1 MB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. [2018-12-09 17:21:46,098 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:21:46,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-09 17:21:46,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:21:46,099 INFO L168 Benchmark]: Boogie Preprocessor took 17.23 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 17:21:46,099 INFO L168 Benchmark]: RCFGBuilder took 164.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-09 17:21:46,099 INFO L168 Benchmark]: TraceAbstraction took 563.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.5 MB in the end (delta: 84.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 11.5 GB. [2018-12-09 17:21:46,099 INFO L168 Benchmark]: Witness Printer took 29.35 ms. Allocated memory is still 1.1 GB. Free memory was 988.5 MB in the beginning and 983.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 17:21:46,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.23 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 164.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 563.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 988.5 MB in the end (delta: 84.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 11.5 GB. * Witness Printer took 29.35 ms. Allocated memory is still 1.1 GB. Free memory was 988.5 MB in the beginning and 983.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 652]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}] [L630] COND FALSE !(a == 0) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}] [L631] p = a VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, p={14:0}] [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] p->h = 2 VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, p={14:0}] [L638] t = (List) malloc(sizeof(struct node)) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, t={17:0}] [L639] COND FALSE !(t == 0) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, t={17:0}] [L640] p->n = t [L641] EXPR p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 [L644] p = a VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, t={17:0}] [L645] COND FALSE !(\read(flag)) VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, t={17:0}] [L649] EXPR p->h VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, p->h=2, t={17:0}] [L649] COND FALSE !(p->h == 1) [L651] EXPR p->h VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, p->h=2, t={17:0}] [L651] COND TRUE p->h != 3 [L652] __VERIFIER_error() VAL [a={14:0}, flag=0, malloc(sizeof(struct node))={14:0}, malloc(sizeof(struct node))={17:0}, p={14:0}, t={17:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 63 SDslu, 159 SDs, 0 SdLazy, 127 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 2956 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...