./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/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 1da26dc017449c0cb12d610e89da82d7cad61026 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/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 1da26dc017449c0cb12d610e89da82d7cad61026 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_18 term size 50 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:16:02,224 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:16:02,225 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:16:02,232 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:16:02,232 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:16:02,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:16:02,233 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:16:02,235 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:16:02,236 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:16:02,236 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:16:02,237 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:16:02,237 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:16:02,238 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:16:02,238 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:16:02,239 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:16:02,240 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:16:02,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:16:02,241 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:16:02,243 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:16:02,244 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:16:02,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:16:02,245 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:16:02,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:16:02,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:16:02,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:16:02,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:16:02,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:16:02,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:16:02,250 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:16:02,251 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:16:02,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:16:02,251 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:16:02,252 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:16:02,252 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:16:02,252 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:16:02,253 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:16:02,253 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 04:16:02,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:16:02,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:16:02,263 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:16:02,264 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 04:16:02,264 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 04:16:02,264 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 04:16:02,264 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 04:16:02,264 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 04:16:02,264 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 04:16:02,264 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 04:16:02,265 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 04:16:02,265 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:16:02,265 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:16:02,265 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:16:02,265 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:16:02,266 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:16:02,267 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:16:02,267 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:16:02,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:16:02,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:16:02,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:16:02,267 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:16:02,267 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:16:02,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:16:02,268 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 04:16:02,268 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:16:02,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:16:02,268 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 04:16:02,268 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_441748b5-6293-49d6-b308-c7dd216dbbce/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 -> 1da26dc017449c0cb12d610e89da82d7cad61026 [2018-11-10 04:16:02,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:16:02,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:16:02,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:16:02,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:16:02,303 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:16:02,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 04:16:02,344 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/99c4c94af/dbf1869445254ee0b4423e3aae59521d/FLAGdb128dc35 [2018-11-10 04:16:02,795 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:16:02,795 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 04:16:02,804 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/99c4c94af/dbf1869445254ee0b4423e3aae59521d/FLAGdb128dc35 [2018-11-10 04:16:02,813 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/99c4c94af/dbf1869445254ee0b4423e3aae59521d [2018-11-10 04:16:02,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:16:02,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:16:02,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:16:02,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:16:02,819 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:16:02,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:16:02" (1/1) ... [2018-11-10 04:16:02,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294cde19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:02, skipping insertion in model container [2018-11-10 04:16:02,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:16:02" (1/1) ... [2018-11-10 04:16:02,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:16:02,854 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:16:03,041 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:16:03,047 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:16:03,081 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:16:03,110 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:16:03,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03 WrapperNode [2018-11-10 04:16:03,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:16:03,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:16:03,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:16:03,112 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:16:03,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:16:03,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:16:03,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:16:03,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:16:03,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... [2018-11-10 04:16:03,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:16:03,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:16:03,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:16:03,205 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:16:03,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:16:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-10 04:16:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-10 04:16:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 04:16:03,240 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 04:16:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2018-11-10 04:16:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2018-11-10 04:16:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-10 04:16:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-10 04:16:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:16:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:16:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:16:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:16:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-10 04:16:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-10 04:16:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:16:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:16:03,511 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:16:03,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:16:03 BoogieIcfgContainer [2018-11-10 04:16:03,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:16:03,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:16:03,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:16:03,515 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:16:03,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:16:02" (1/3) ... [2018-11-10 04:16:03,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177efb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:16:03, skipping insertion in model container [2018-11-10 04:16:03,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:03" (2/3) ... [2018-11-10 04:16:03,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177efb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:16:03, skipping insertion in model container [2018-11-10 04:16:03,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:16:03" (3/3) ... [2018-11-10 04:16:03,518 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 04:16:03,526 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:16:03,532 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:16:03,544 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:16:03,562 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:16:03,562 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:16:03,562 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:16:03,562 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:16:03,562 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:16:03,562 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:16:03,562 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:16:03,562 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:16:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-11-10 04:16:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 04:16:03,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:03,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:03,579 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:03,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1500643865, now seen corresponding path program 1 times [2018-11-10 04:16:03,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:16:03,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:03,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:03,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:03,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:16:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:03,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:16:03,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:16:03,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:16:03,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:16:03,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:16:03,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:16:03,716 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-11-10 04:16:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:03,733 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2018-11-10 04:16:03,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:16:03,734 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-10 04:16:03,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:03,740 INFO L225 Difference]: With dead ends: 104 [2018-11-10 04:16:03,741 INFO L226 Difference]: Without dead ends: 45 [2018-11-10 04:16:03,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:16:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-10 04:16:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-10 04:16:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 04:16:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-11-10 04:16:03,769 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 29 [2018-11-10 04:16:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:03,769 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-11-10 04:16:03,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:16:03,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-11-10 04:16:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 04:16:03,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:03,771 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:03,771 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:03,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:03,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1596071344, now seen corresponding path program 1 times [2018-11-10 04:16:03,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:16:03,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:03,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:03,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:03,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:16:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:03,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:16:03,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:16:03,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:16:03,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:16:03,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:16:03,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:16:03,850 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 5 states. [2018-11-10 04:16:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:03,892 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2018-11-10 04:16:03,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:16:03,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-10 04:16:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:03,894 INFO L225 Difference]: With dead ends: 82 [2018-11-10 04:16:03,894 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:16:03,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:16:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:16:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-11-10 04:16:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-10 04:16:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2018-11-10 04:16:03,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2018-11-10 04:16:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:03,901 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2018-11-10 04:16:03,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:16:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2018-11-10 04:16:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:16:03,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:03,902 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:03,902 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:03,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:03,902 INFO L82 PathProgramCache]: Analyzing trace with hash -744465178, now seen corresponding path program 1 times [2018-11-10 04:16:03,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:16:03,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:03,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:03,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:03,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:16:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 04:16:03,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:16:03,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:16:03,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:16:03,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:16:03,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:16:03,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:16:03,986 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 3 states. [2018-11-10 04:16:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:04,002 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2018-11-10 04:16:04,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:16:04,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-10 04:16:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:04,003 INFO L225 Difference]: With dead ends: 88 [2018-11-10 04:16:04,003 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:16:04,004 INFO L605 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 [2018-11-10 04:16:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:16:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-10 04:16:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 04:16:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2018-11-10 04:16:04,010 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 41 [2018-11-10 04:16:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:04,010 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2018-11-10 04:16:04,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:16:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2018-11-10 04:16:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:16:04,011 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:04,011 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:04,012 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:04,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash -878478684, now seen corresponding path program 1 times [2018-11-10 04:16:04,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:16:04,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:04,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:04,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:04,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:16:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 04:16:04,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:04,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 04:16:04,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-11-10 04:16:04,107 INFO L202 CegarAbsIntRunner]: [4], [5], [6], [10], [14], [16], [18], [23], [25], [29], [30], [31], [33], [36], [55], [59], [61], [63], [93], [97], [102], [120], [126], [128], [129], [130], [131], [132], [133], [134], [135], [136], [138], [139], [140], [141] [2018-11-10 04:16:04,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 04:16:04,145 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 04:16:04,459 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 04:16:04,460 INFO L272 AbstractInterpreter]: Visited 20 different actions 31 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 46 variables. [2018-11-10 04:16:04,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:04,482 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 04:16:04,721 INFO L227 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 85.26% of their original sizes. [2018-11-10 04:16:04,722 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 04:16:04,953 INFO L415 sIntCurrentIteration]: We unified 40 AI predicates to 40 [2018-11-10 04:16:04,954 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 04:16:04,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:16:04,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-10 04:16:04,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 04:16:04,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 04:16:04,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 04:16:04,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:16:04,956 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 13 states. [2018-11-10 04:16:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:06,373 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2018-11-10 04:16:06,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:16:06,373 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2018-11-10 04:16:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:06,374 INFO L225 Difference]: With dead ends: 93 [2018-11-10 04:16:06,374 INFO L226 Difference]: Without dead ends: 62 [2018-11-10 04:16:06,374 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:16:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-10 04:16:06,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-10 04:16:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-10 04:16:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-11-10 04:16:06,384 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 41 [2018-11-10 04:16:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:06,384 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-11-10 04:16:06,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 04:16:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-11-10 04:16:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 04:16:06,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:06,385 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:06,386 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:06,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1765744498, now seen corresponding path program 1 times [2018-11-10 04:16:06,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:16:06,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:06,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:06,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:06,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:16:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:16:06,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:06,995 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 04:16:06,995 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-11-10 04:16:06,995 INFO L202 CegarAbsIntRunner]: [4], [5], [6], [10], [14], [16], [18], [21], [23], [25], [29], [30], [31], [33], [36], [55], [59], [61], [63], [93], [97], [102], [120], [126], [128], [129], [130], [131], [132], [133], [134], [135], [136], [138], [139], [140], [141] [2018-11-10 04:16:06,997 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 04:16:06,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 04:16:07,383 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 04:16:07,383 INFO L272 AbstractInterpreter]: Visited 37 different actions 118 times. Merged at 17 different actions 39 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 46 variables. [2018-11-10 04:16:07,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:07,385 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 04:16:07,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:07,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:16:07,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:07,391 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 04:16:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:07,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:07,665 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:07,667 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:07,667 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:07,669 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:07,673 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:07,673 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2018-11-10 04:16:07,792 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_write~$Pointer$_#ptr.offset| Int) (node_create_~temp~0.base Int) (|node_create_write~$Pointer$_#value.base| Int)) (and (<= 8 |node_create_write~$Pointer$_#ptr.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) 4 0) |node_create_write~$Pointer$_#ptr.offset| |node_create_write~$Pointer$_#value.base|))))) is different from true [2018-11-10 04:16:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2018-11-10 04:16:07,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:16:10,445 WARN L832 $PredicateComparison]: unable to prove that (forall ((|v_node_create_write~$Pointer$_#value.base_12| Int) (v_dll_append_~head.offset_BEFORE_CALL_2 Int) (|v_node_create_write~$Pointer$_#ptr.offset_12| Int) (v_dll_append_~head.base_BEFORE_CALL_2 Int) (node_create_~temp~0.base Int)) (or (< |v_node_create_write~$Pointer$_#ptr.offset_12| (+ c_node_create_~temp~0.offset 8)) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) (+ c_node_create_~temp~0.offset 4) 0) |v_node_create_write~$Pointer$_#ptr.offset_12| |v_node_create_write~$Pointer$_#value.base_12|)) v_dll_append_~head.base_BEFORE_CALL_2) v_dll_append_~head.offset_BEFORE_CALL_2))) (exists ((|v_node_create_write~$Pointer$_#value.base_11| Int) (|v_node_create_write~$Pointer$_#ptr.offset_11| Int) (|v_node_create_write~$Pointer$_#ptr.base_11| Int)) (and (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_write~$Pointer$_#ptr.base_11| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_write~$Pointer$_#ptr.base_11|) 4 0) |v_node_create_write~$Pointer$_#ptr.offset_11| |v_node_create_write~$Pointer$_#value.base_11|)) v_dll_append_~head.base_BEFORE_CALL_2) v_dll_append_~head.offset_BEFORE_CALL_2)) (<= 8 |v_node_create_write~$Pointer$_#ptr.offset_11|))))) is different from false [2018-11-10 04:16:12,456 WARN L832 $PredicateComparison]: unable to prove that (forall ((|v_node_create_write~$Pointer$_#value.base_12| Int) (v_dll_append_~head.offset_BEFORE_CALL_2 Int) (|v_node_create_write~$Pointer$_#ptr.offset_12| Int) (v_dll_append_~head.base_BEFORE_CALL_2 Int) (node_create_~temp~0.base Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| node_create_~temp~0.base (store (store (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) 4 0) |v_node_create_write~$Pointer$_#ptr.offset_12| |v_node_create_write~$Pointer$_#value.base_12|)) v_dll_append_~head.base_BEFORE_CALL_2) v_dll_append_~head.offset_BEFORE_CALL_2) 0)) (< |v_node_create_write~$Pointer$_#ptr.offset_12| 8) (exists ((|v_node_create_write~$Pointer$_#value.base_11| Int) (|v_node_create_write~$Pointer$_#ptr.offset_11| Int) (|v_node_create_write~$Pointer$_#ptr.base_11| Int)) (and (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| |v_node_create_write~$Pointer$_#ptr.base_11| (store (store (select |c_old(#memory_$Pointer$.base)| |v_node_create_write~$Pointer$_#ptr.base_11|) 4 0) |v_node_create_write~$Pointer$_#ptr.offset_11| |v_node_create_write~$Pointer$_#value.base_11|)) v_dll_append_~head.base_BEFORE_CALL_2) v_dll_append_~head.offset_BEFORE_CALL_2)) (<= 8 |v_node_create_write~$Pointer$_#ptr.offset_11|))))) is different from false [2018-11-10 04:16:12,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2018-11-10 04:16:12,589 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-11-10 04:16:12,589 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,597 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-11-10 04:16:12,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-10 04:16:12,599 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,602 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,604 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2018-11-10 04:16:12,612 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2018-11-10 04:16:12,652 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 8 [2018-11-10 04:16:12,653 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,654 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-10 04:16:12,654 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 8 [2018-11-10 04:16:12,669 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,670 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 04:16:12,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2018-11-10 04:16:12,672 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:12,678 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-10 04:16:12,686 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-10 04:16:12,696 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-10 04:16:12,709 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-10 04:16:12,709 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:39, output treesize:12 [2018-11-10 04:16:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2018-11-10 04:16:12,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 04:16:12,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 19] total 46 [2018-11-10 04:16:12,860 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 04:16:12,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-10 04:16:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-10 04:16:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1654, Unknown=7, NotChecked=252, Total=2070 [2018-11-10 04:16:12,861 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 36 states. [2018-11-10 04:16:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:14,421 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2018-11-10 04:16:14,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-10 04:16:14,421 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 52 [2018-11-10 04:16:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:14,423 INFO L225 Difference]: With dead ends: 131 [2018-11-10 04:16:14,423 INFO L226 Difference]: Without dead ends: 81 [2018-11-10 04:16:14,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=311, Invalid=3354, Unknown=7, NotChecked=360, Total=4032 [2018-11-10 04:16:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-10 04:16:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2018-11-10 04:16:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-10 04:16:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-11-10 04:16:14,437 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 52 [2018-11-10 04:16:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:14,437 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2018-11-10 04:16:14,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-10 04:16:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2018-11-10 04:16:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-10 04:16:14,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:14,439 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:14,439 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:14,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:14,439 INFO L82 PathProgramCache]: Analyzing trace with hash -108350180, now seen corresponding path program 1 times [2018-11-10 04:16:14,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 04:16:14,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:14,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:14,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:16:14,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 04:16:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:16,168 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2018-11-10 04:16:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:16:16,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:16,585 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 04:16:16,585 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 57 with the following transitions: [2018-11-10 04:16:16,585 INFO L202 CegarAbsIntRunner]: [4], [5], [6], [10], [14], [16], [18], [21], [23], [25], [29], [30], [31], [33], [38], [42], [44], [47], [53], [55], [59], [61], [63], [93], [97], [102], [120], [126], [128], [129], [130], [131], [132], [133], [134], [135], [136], [138], [139], [140], [141] [2018-11-10 04:16:16,587 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 04:16:16,587 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 04:16:17,089 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 04:16:17,089 INFO L272 AbstractInterpreter]: Visited 41 different actions 126 times. Merged at 17 different actions 39 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 46 variables. [2018-11-10 04:16:17,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:17,097 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 04:16:17,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:17,098 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:16:17,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:17,103 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 04:16:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:17,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:17,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-10 04:16:17,162 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,164 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,164 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 04:16:17,423 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-10 04:16:17,425 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-10 04:16:17,425 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,426 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,434 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,434 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2018-11-10 04:16:17,500 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:17,504 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 91 [2018-11-10 04:16:17,506 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-11-10 04:16:17,506 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,513 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,524 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:17,524 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:95, output treesize:72 [2018-11-10 04:16:17,762 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:17,764 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:17,764 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2018-11-10 04:16:17,767 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 04:16:17,768 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:17,768 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 04:16:17,969 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:16:17,970 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_3 term size 27 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-10 04:16:17,972 INFO L168 Benchmark]: Toolchain (without parser) took 15156.67 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 493.4 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 318.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:16:17,973 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:16:17,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.35 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 928.0 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-10 04:16:17,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 928.0 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:16:17,974 INFO L168 Benchmark]: Boogie Preprocessor took 20.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 04:16:17,975 INFO L168 Benchmark]: RCFGBuilder took 307.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:16:17,975 INFO L168 Benchmark]: TraceAbstraction took 14459.41 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 369.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -48.6 MB). Peak memory consumption was 320.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:16:17,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.35 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 928.0 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 928.0 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 307.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14459.41 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 369.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -48.6 MB). Peak memory consumption was 320.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_3 term size 27 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_3 term size 27: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:16:19,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:16:19,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:16:19,406 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:16:19,407 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:16:19,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:16:19,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:16:19,409 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:16:19,411 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:16:19,411 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:16:19,412 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:16:19,412 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:16:19,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:16:19,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:16:19,414 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:16:19,415 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:16:19,416 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:16:19,417 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:16:19,418 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:16:19,419 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:16:19,420 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:16:19,421 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:16:19,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:16:19,423 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:16:19,423 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:16:19,424 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:16:19,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:16:19,426 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:16:19,426 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:16:19,427 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:16:19,427 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:16:19,428 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:16:19,428 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:16:19,428 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:16:19,429 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:16:19,430 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:16:19,430 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 04:16:19,440 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:16:19,441 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:16:19,441 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:16:19,442 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 04:16:19,442 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 04:16:19,442 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 04:16:19,442 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 04:16:19,442 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 04:16:19,443 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:16:19,443 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:16:19,443 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:16:19,443 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:16:19,443 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:16:19,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:16:19,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:16:19,444 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 04:16:19,444 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 04:16:19,444 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:16:19,444 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:16:19,444 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:16:19,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:16:19,445 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:16:19,445 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:16:19,445 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:16:19,447 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:16:19,447 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:16:19,447 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:16:19,447 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:16:19,447 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 04:16:19,447 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:16:19,448 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 04:16:19,448 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 04:16:19,448 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/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 -> 1da26dc017449c0cb12d610e89da82d7cad61026 [2018-11-10 04:16:19,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:16:19,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:16:19,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:16:19,491 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:16:19,491 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:16:19,492 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 04:16:19,535 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/062fa6fbe/547172d8a1b64281aae650ee631420ed/FLAG23e1740b8 [2018-11-10 04:16:19,877 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:16:19,877 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/sv-benchmarks/c/list-simple/dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 04:16:19,885 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/062fa6fbe/547172d8a1b64281aae650ee631420ed/FLAG23e1740b8 [2018-11-10 04:16:19,896 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/data/062fa6fbe/547172d8a1b64281aae650ee631420ed [2018-11-10 04:16:19,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:16:19,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 04:16:19,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:16:19,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:16:19,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:16:19,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:16:19" (1/1) ... [2018-11-10 04:16:19,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2a1194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:19, skipping insertion in model container [2018-11-10 04:16:19,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:16:19" (1/1) ... [2018-11-10 04:16:19,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:16:19,938 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:16:20,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:16:20,150 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:16:20,189 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:16:20,218 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:16:20,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20 WrapperNode [2018-11-10 04:16:20,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:16:20,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 04:16:20,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 04:16:20,219 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 04:16:20,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 04:16:20,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:16:20,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:16:20,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:16:20,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... [2018-11-10 04:16:20,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:16:20,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:16:20,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:16:20,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:16:20,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:16:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-10 04:16:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-10 04:16:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 04:16:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 04:16:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2018-11-10 04:16:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2018-11-10 04:16:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-10 04:16:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-10 04:16:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:16:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:16:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:16:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:16:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-10 04:16:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-10 04:16:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:16:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:16:20,700 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:16:20,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:16:20 BoogieIcfgContainer [2018-11-10 04:16:20,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:16:20,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:16:20,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:16:20,703 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:16:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:16:19" (1/3) ... [2018-11-10 04:16:20,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7faf5e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:16:20, skipping insertion in model container [2018-11-10 04:16:20,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:16:20" (2/3) ... [2018-11-10 04:16:20,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7faf5e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:16:20, skipping insertion in model container [2018-11-10 04:16:20,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:16:20" (3/3) ... [2018-11-10 04:16:20,706 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 04:16:20,713 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:16:20,717 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:16:20,730 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:16:20,747 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:16:20,747 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:16:20,747 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:16:20,747 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:16:20,747 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:16:20,747 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:16:20,748 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:16:20,748 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:16:20,748 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:16:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-11-10 04:16:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 04:16:20,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:20,764 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:20,766 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:20,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1500643865, now seen corresponding path program 1 times [2018-11-10 04:16:20,773 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:16:20,773 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:16:20,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:20,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:20,873 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:16:20,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:16:20,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:16:20,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:16:20,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:16:20,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:16:20,888 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-11-10 04:16:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:20,905 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2018-11-10 04:16:20,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:16:20,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-10 04:16:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:20,913 INFO L225 Difference]: With dead ends: 104 [2018-11-10 04:16:20,913 INFO L226 Difference]: Without dead ends: 45 [2018-11-10 04:16:20,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:16:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-10 04:16:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-10 04:16:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 04:16:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-11-10 04:16:20,942 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 29 [2018-11-10 04:16:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:20,943 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-11-10 04:16:20,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:16:20,943 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-11-10 04:16:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 04:16:20,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:20,945 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:20,945 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:20,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1596071344, now seen corresponding path program 1 times [2018-11-10 04:16:20,946 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:16:20,946 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:16:20,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:21,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:21,089 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:16:21,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:16:21,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:16:21,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:16:21,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:16:21,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:16:21,095 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 5 states. [2018-11-10 04:16:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:21,143 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2018-11-10 04:16:21,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:16:21,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-10 04:16:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:21,145 INFO L225 Difference]: With dead ends: 82 [2018-11-10 04:16:21,145 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:16:21,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:16:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:16:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-11-10 04:16:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-10 04:16:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2018-11-10 04:16:21,154 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2018-11-10 04:16:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:21,155 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2018-11-10 04:16:21,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:16:21,155 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2018-11-10 04:16:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:16:21,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:21,155 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:21,156 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:21,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:21,156 INFO L82 PathProgramCache]: Analyzing trace with hash -744465178, now seen corresponding path program 1 times [2018-11-10 04:16:21,156 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:16:21,156 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:16:21,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:21,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:21,271 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:16:21,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:16:21,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:16:21,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:16:21,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:16:21,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:16:21,274 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 3 states. [2018-11-10 04:16:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:21,300 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2018-11-10 04:16:21,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:16:21,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-10 04:16:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:21,302 INFO L225 Difference]: With dead ends: 88 [2018-11-10 04:16:21,302 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:16:21,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:16:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:16:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-10 04:16:21,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 04:16:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2018-11-10 04:16:21,310 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 41 [2018-11-10 04:16:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:21,310 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2018-11-10 04:16:21,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:16:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2018-11-10 04:16:21,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:16:21,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:21,311 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:21,312 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:21,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash -878478684, now seen corresponding path program 1 times [2018-11-10 04:16:21,312 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:16:21,313 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:16:21,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:21,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:21,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:16:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 04:16:21,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:21,645 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:16:21,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:21,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:16:21,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:16:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 04:16:22,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-10 04:16:22,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7] total 16 [2018-11-10 04:16:22,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 04:16:22,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 04:16:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-10 04:16:22,030 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 16 states. [2018-11-10 04:16:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:22,204 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-11-10 04:16:22,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:16:22,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-11-10 04:16:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:22,206 INFO L225 Difference]: With dead ends: 88 [2018-11-10 04:16:22,206 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 04:16:22,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:16:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 04:16:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-11-10 04:16:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-10 04:16:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2018-11-10 04:16:22,212 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 41 [2018-11-10 04:16:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:22,213 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2018-11-10 04:16:22,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 04:16:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2018-11-10 04:16:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 04:16:22,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:22,214 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:22,214 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:22,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:22,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1765744498, now seen corresponding path program 1 times [2018-11-10 04:16:22,215 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:16:22,215 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:16:22,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:22,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:22,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-10 04:16:22,559 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:22,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:22,570 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 04:16:22,589 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_#Ultimate.alloc_#res.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |node_create_#Ultimate.alloc_#res.base|) (_ bv0 1)) (= (store |c_old(#valid)| |node_create_#Ultimate.alloc_#res.base| (_ bv1 1)) |c_#valid|))) is different from true [2018-11-10 04:16:22,716 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:22,717 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:22,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-10 04:16:22,725 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2018-11-10 04:16:22,725 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:22,733 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:22,749 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 04:16:22,749 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:27 [2018-11-10 04:16:22,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:22,799 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:22,800 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:22,804 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:22,819 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 04:16:22,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2018-11-10 04:16:23,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:23,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:23,194 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:23,198 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:23,215 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-10 04:16:23,215 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:38 [2018-11-10 04:16:23,301 INFO L267 ElimStorePlain]: Start of recursive call 1: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:23,301 INFO L202 ElimStorePlain]: Needed 1 recursive calls to eliminate 6 variables, input treesize:78, output treesize:1 [2018-11-10 04:16:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 16 not checked. [2018-11-10 04:16:23,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:16:23,686 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-11-10 04:16:23,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:23,975 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:16:23,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:24,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:24,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:24,300 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:24,300 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:24,302 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:24,307 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:24,308 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2018-11-10 04:16:24,465 WARN L854 $PredicateComparison]: unable to prove that (exists ((|node_create_write~$Pointer$_#value.base| (_ BitVec 32)) (|node_create_write~$Pointer$_#ptr.base| (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_write~$Pointer$_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |node_create_write~$Pointer$_#ptr.base|) (_ bv4 32) (_ bv0 32)) (_ bv8 32) |node_create_write~$Pointer$_#value.base|)))) is different from true [2018-11-10 04:16:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2018-11-10 04:16:24,729 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:16:27,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:16:27,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2018-11-10 04:16:27,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-10 04:16:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-10 04:16:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1137, Unknown=31, NotChecked=138, Total=1406 [2018-11-10 04:16:27,204 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 36 states. [2018-11-10 04:16:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:16:31,248 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-11-10 04:16:31,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-10 04:16:31,248 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 52 [2018-11-10 04:16:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:16:31,250 INFO L225 Difference]: With dead ends: 104 [2018-11-10 04:16:31,250 INFO L226 Difference]: Without dead ends: 65 [2018-11-10 04:16:31,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=200, Invalid=2370, Unknown=90, NotChecked=202, Total=2862 [2018-11-10 04:16:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-10 04:16:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2018-11-10 04:16:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-10 04:16:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2018-11-10 04:16:31,260 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 52 [2018-11-10 04:16:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:16:31,261 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2018-11-10 04:16:31,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-10 04:16:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2018-11-10 04:16:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-10 04:16:31,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:16:31,262 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:16:31,263 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:16:31,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:16:31,263 INFO L82 PathProgramCache]: Analyzing trace with hash -108350180, now seen corresponding path program 1 times [2018-11-10 04:16:31,263 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:16:31,264 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:16:31,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:31,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:31,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-10 04:16:31,627 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,630 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,631 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 04:16:31,788 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-10 04:16:31,791 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-10 04:16:31,791 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,793 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,805 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,805 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39 [2018-11-10 04:16:31,858 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:31,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 78 [2018-11-10 04:16:31,868 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-11-10 04:16:31,868 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,881 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,897 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:31,897 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:77, output treesize:54 [2018-11-10 04:16:32,139 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:32,140 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:32,141 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:32,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 60 [2018-11-10 04:16:32,147 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 54 [2018-11-10 04:16:32,147 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,160 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,178 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,178 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:64, output treesize:63 [2018-11-10 04:16:32,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:32,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:32,268 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,271 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,301 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2018-11-10 04:16:32,303 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:32,304 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,320 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,337 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:32,338 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:76, output treesize:91 [2018-11-10 04:16:32,552 WARN L854 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset (_ BitVec 32)) (|node_create_write~$Pointer$_#ptr.offset| (_ BitVec 32)) (|node_create_write~$Pointer$_#value.base| (_ BitVec 32)) (|node_create_write~$Pointer$_#ptr.base| (_ BitVec 32)) (|node_create_write~$Pointer$_#value.offset| (_ BitVec 32))) (let ((.cse0 (bvadd node_create_~temp~0.offset (_ bv4 32)))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_write~$Pointer$_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |node_create_write~$Pointer$_#ptr.base|) .cse0 (_ bv0 32)) |node_create_write~$Pointer$_#ptr.offset| |node_create_write~$Pointer$_#value.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_write~$Pointer$_#ptr.base|)) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_write~$Pointer$_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |node_create_write~$Pointer$_#ptr.base|) .cse0 (_ bv0 32)) |node_create_write~$Pointer$_#ptr.offset| |node_create_write~$Pointer$_#value.offset|)) |c_#memory_$Pointer$.offset|)))) is different from true [2018-11-10 04:16:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2018-11-10 04:16:36,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:16:36,467 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-10 04:16:36,648 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-10 04:16:36,917 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-10 04:16:37,117 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-10 04:16:37,645 WARN L179 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-11-10 04:16:37,764 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-10 04:16:37,925 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-11-10 04:16:38,056 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-10 04:16:38,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:16:38,709 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441748b5-6293-49d6-b308-c7dd216dbbce/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:16:38,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:16:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:16:38,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:16:38,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-10 04:16:38,903 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:38,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:38,906 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 04:16:39,342 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:39,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:39,344 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:39,347 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:39,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:16:39,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:16:39,364 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:39,366 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:39,373 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:16:39,373 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:33, output treesize:22 [2018-11-10 04:16:49,416 WARN L179 SmtUtils]: Spent 6.44 s on a formula simplification. DAG size of input: 179 DAG size of output: 54 [2018-11-10 04:16:49,449 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:49,465 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:49,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2018-11-10 04:16:49,466 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 04:16:49,749 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:16:50,060 INFO L303 Elim1Store]: Index analysis took 354 ms [2018-11-10 04:16:50,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 223 [2018-11-10 04:17:38,011 WARN L179 SmtUtils]: Spent 47.67 s on a formula simplification. DAG size of input: 113 DAG size of output: 107 [2018-11-10 04:17:38,028 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 191 [2018-11-10 04:17:38,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-11-10 04:17:38,066 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:38,207 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:17:43,927 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:43,928 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 165 [2018-11-10 04:17:43,959 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:44,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 177 [2018-11-10 04:17:44,009 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:44,193 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:17:50,442 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:50,442 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 04:17:50,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 217 [2018-11-10 04:17:50,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2018-11-10 04:17:50,523 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:50,669 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:50,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 166 [2018-11-10 04:17:50,735 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:50,742 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:50,774 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 161 [2018-11-10 04:17:50,774 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:50,839 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:17:50,914 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:17:53,418 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:53,474 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 04:17:53,618 INFO L303 Elim1Store]: Index analysis took 225 ms [2018-11-10 04:17:53,779 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 248 [2018-11-10 04:17:53,790 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 231 [2018-11-10 04:17:53,791 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:55,792 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:55,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:55,799 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 04:17:55,800 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 186 [2018-11-10 04:17:55,821 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:55,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 163 [2018-11-10 04:17:55,851 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:55,976 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:17:57,724 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:57,771 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 180 [2018-11-10 04:17:57,781 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:57,785 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:57,800 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 133 [2018-11-10 04:17:57,800 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-10 04:17:57,858 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:17:58,762 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:58,866 INFO L303 Elim1Store]: Index analysis took 121 ms [2018-11-10 04:17:58,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 163 treesize of output 182 [2018-11-10 04:17:59,011 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:59,016 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 04:17:59,217 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:17:59,218 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_18 term size 50 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-10 04:17:59,220 INFO L168 Benchmark]: Toolchain (without parser) took 99321.52 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 324.0 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -274.6 MB). Peak memory consumption was 425.4 MB. Max. memory is 11.5 GB. [2018-11-10 04:17:59,221 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:17:59,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.09 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 916.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:17:59,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 916.5 MB in the beginning and 1.1 GB in the end (delta: -221.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 04:17:59,222 INFO L168 Benchmark]: Boogie Preprocessor took 22.63 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:17:59,222 INFO L168 Benchmark]: RCFGBuilder took 373.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:17:59,223 INFO L168 Benchmark]: TraceAbstraction took 98518.31 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 179.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -125.7 MB). Peak memory consumption was 430.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:17:59,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.09 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 916.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 916.5 MB in the beginning and 1.1 GB in the end (delta: -221.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.63 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 373.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 98518.31 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 179.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -125.7 MB). Peak memory consumption was 430.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_18 term size 50 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_18 term size 50: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...