./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_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_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 28eb62e409662a14417b5a67d3fe5de851f13e52 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 28eb62e409662a14417b5a67d3fe5de851f13e52 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_32 term size 12 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:20:46,133 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:20:46,134 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:20:46,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:20:46,141 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:20:46,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:20:46,142 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:20:46,143 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:20:46,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:20:46,145 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:20:46,146 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:20:46,146 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:20:46,147 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:20:46,147 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:20:46,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:20:46,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:20:46,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:20:46,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:20:46,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:20:46,153 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:20:46,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:20:46,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:20:46,156 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:20:46,156 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:20:46,157 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:20:46,157 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:20:46,158 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:20:46,158 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:20:46,159 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:20:46,160 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:20:46,160 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:20:46,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:20:46,161 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:20:46,161 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:20:46,161 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:20:46,162 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:20:46,162 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 07:20:46,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:20:46,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:20:46,173 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:20:46,173 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 07:20:46,173 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 07:20:46,173 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 07:20:46,174 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 07:20:46,174 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 07:20:46,174 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 07:20:46,174 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 07:20:46,174 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 07:20:46,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:20:46,175 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:20:46,175 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:20:46,175 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:20:46,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:20:46,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:20:46,175 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:20:46,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:20:46,176 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:20:46,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:20:46,176 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:20:46,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:20:46,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:20:46,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:20:46,177 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:20:46,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:20:46,178 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 07:20:46,178 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_25789742-80d3-49f1-ac08-d49550a24881/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 -> 28eb62e409662a14417b5a67d3fe5de851f13e52 [2018-11-10 07:20:46,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:20:46,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:20:46,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:20:46,212 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:20:46,212 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:20:46,212 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:20:46,258 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/3a80e5494/a064c0158eea40c498b9b3dd051591ea/FLAG8b3b1a610 [2018-11-10 07:20:46,599 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:20:46,599 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/sv-benchmarks/c/list-simple/dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:20:46,608 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/3a80e5494/a064c0158eea40c498b9b3dd051591ea/FLAG8b3b1a610 [2018-11-10 07:20:46,620 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/3a80e5494/a064c0158eea40c498b9b3dd051591ea [2018-11-10 07:20:46,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:20:46,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:20:46,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:20:46,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:20:46,628 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:20:46,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:46,630 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 07:20:46, skipping insertion in model container [2018-11-10 07:20:46,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:46,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:20:46,670 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:20:46,883 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:20:46,890 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:20:46,924 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:20:46,948 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:20:46,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46 WrapperNode [2018-11-10 07:20:46,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:20:46,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:20:46,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:20:46,949 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:20:46,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:20:47,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:20:47,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:20:47,026 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:20:47,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... [2018-11-10 07:20:47,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:20:47,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:20:47,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:20:47,053 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:20:47,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:20:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-10 07:20:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-10 07:20:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 07:20:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 07:20:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-10 07:20:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-10 07:20:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:20:47,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:20:47,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:20:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:20:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-10 07:20:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-10 07:20:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-10 07:20:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-10 07:20:47,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:20:47,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:20:47,364 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:20:47,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:20:47 BoogieIcfgContainer [2018-11-10 07:20:47,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:20:47,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:20:47,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:20:47,368 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:20:47,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:20:46" (1/3) ... [2018-11-10 07:20:47,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7c9320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:20:47, skipping insertion in model container [2018-11-10 07:20:47,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:46" (2/3) ... [2018-11-10 07:20:47,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7c9320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:20:47, skipping insertion in model container [2018-11-10 07:20:47,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:20:47" (3/3) ... [2018-11-10 07:20:47,370 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:20:47,377 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:20:47,382 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 07:20:47,391 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 07:20:47,411 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:20:47,411 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:20:47,411 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:20:47,411 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:20:47,411 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:20:47,411 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:20:47,412 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:20:47,412 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:20:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-10 07:20:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 07:20:47,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:20:47,428 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 07:20:47,430 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:20:47,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash 750227345, now seen corresponding path program 1 times [2018-11-10 07:20:47,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:20:47,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:20:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:47,552 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 07:20:47,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:20:47,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:20:47,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:20:47,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 07:20:47,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 07:20:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 07:20:47,567 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-10 07:20:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:20:47,584 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2018-11-10 07:20:47,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 07:20:47,585 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-10 07:20:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:20:47,591 INFO L225 Difference]: With dead ends: 93 [2018-11-10 07:20:47,591 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 07:20:47,593 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 07:20:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 07:20:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-10 07:20:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 07:20:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-11-10 07:20:47,617 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2018-11-10 07:20:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:20:47,617 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-11-10 07:20:47,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 07:20:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-11-10 07:20:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 07:20:47,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:20:47,618 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 07:20:47,619 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:20:47,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1936192900, now seen corresponding path program 1 times [2018-11-10 07:20:47,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:20:47,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:20:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:47,706 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 07:20:47,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:20:47,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 07:20:47,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:20:47,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 07:20:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 07:20:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:20:47,708 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2018-11-10 07:20:47,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:20:47,745 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2018-11-10 07:20:47,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 07:20:47,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-10 07:20:47,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:20:47,746 INFO L225 Difference]: With dead ends: 70 [2018-11-10 07:20:47,746 INFO L226 Difference]: Without dead ends: 45 [2018-11-10 07:20:47,747 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 07:20:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-10 07:20:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-11-10 07:20:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 07:20:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-10 07:20:47,753 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2018-11-10 07:20:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:20:47,753 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-10 07:20:47,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 07:20:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-10 07:20:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 07:20:47,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:20:47,754 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:20:47,755 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:20:47,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1649863280, now seen corresponding path program 1 times [2018-11-10 07:20:47,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:20:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:20:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:20:47,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:20:47,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 07:20:47,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:20:47,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:20:47,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:20:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:20:47,821 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 3 states. [2018-11-10 07:20:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:20:47,851 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-11-10 07:20:47,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:20:47,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-10 07:20:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:20:47,853 INFO L225 Difference]: With dead ends: 76 [2018-11-10 07:20:47,853 INFO L226 Difference]: Without dead ends: 45 [2018-11-10 07:20:47,853 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 07:20:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-10 07:20:47,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-11-10 07:20:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 07:20:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-11-10 07:20:47,858 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 36 [2018-11-10 07:20:47,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:20:47,858 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-11-10 07:20:47,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:20:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-11-10 07:20:47,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 07:20:47,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:20:47,859 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:20:47,859 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:20:47,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:47,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1515849774, now seen corresponding path program 1 times [2018-11-10 07:20:47,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:20:47,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:47,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:47,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:20:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:20:47,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 07:20:47,926 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 07:20:47,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-11-10 07:20:47,927 INFO L202 CegarAbsIntRunner]: [4], [5], [6], [10], [14], [16], [22], [24], [29], [31], [35], [36], [37], [39], [42], [46], [47], [51], [53], [55], [58], [86], [104], [110], [112], [113], [116], [117], [118], [119], [120], [122], [123], [124], [125] [2018-11-10 07:20:47,962 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 07:20:47,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 07:20:48,307 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 07:20:48,308 INFO L272 AbstractInterpreter]: Visited 15 different actions 21 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 48 variables. [2018-11-10 07:20:48,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:48,315 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 07:20:48,560 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 86.64% of their original sizes. [2018-11-10 07:20:48,560 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 07:20:48,673 INFO L415 sIntCurrentIteration]: We unified 35 AI predicates to 35 [2018-11-10 07:20:48,673 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 07:20:48,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 07:20:48,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-10 07:20:48,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:20:48,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 07:20:48,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 07:20:48,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-10 07:20:48,675 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 9 states. [2018-11-10 07:20:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:20:49,245 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2018-11-10 07:20:49,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 07:20:49,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-11-10 07:20:49,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:20:49,246 INFO L225 Difference]: With dead ends: 76 [2018-11-10 07:20:49,246 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 07:20:49,247 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-10 07:20:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 07:20:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2018-11-10 07:20:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 07:20:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-11-10 07:20:49,254 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 36 [2018-11-10 07:20:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:20:49,254 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-11-10 07:20:49,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 07:20:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-11-10 07:20:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 07:20:49,255 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:20:49,256 INFO L375 BasicCegarLoop]: trace histogram [3, 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 07:20:49,257 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:20:49,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash 483841434, now seen corresponding path program 1 times [2018-11-10 07:20:49,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:20:49,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:49,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:49,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:49,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:20:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 07:20:49,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:20:49,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-10 07:20:49,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 07:20:49,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 07:20:49,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 07:20:49,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-10 07:20:49,456 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 10 states. [2018-11-10 07:20:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:20:49,629 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-11-10 07:20:49,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 07:20:49,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-11-10 07:20:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:20:49,630 INFO L225 Difference]: With dead ends: 52 [2018-11-10 07:20:49,630 INFO L226 Difference]: Without dead ends: 50 [2018-11-10 07:20:49,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-11-10 07:20:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-10 07:20:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-11-10 07:20:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-10 07:20:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2018-11-10 07:20:49,636 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 42 [2018-11-10 07:20:49,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:20:49,636 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2018-11-10 07:20:49,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 07:20:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2018-11-10 07:20:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-10 07:20:49,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:20:49,637 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2018-11-10 07:20:49,637 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:20:49,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:49,638 INFO L82 PathProgramCache]: Analyzing trace with hash 211174503, now seen corresponding path program 1 times [2018-11-10 07:20:49,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 07:20:49,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:49,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:49,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:20:49,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 07:20:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:50,709 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2018-11-10 07:20:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:20:50,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 07:20:50,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 07:20:50,828 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2018-11-10 07:20:50,829 INFO L202 CegarAbsIntRunner]: [4], [5], [6], [10], [14], [16], [22], [24], [27], [29], [31], [35], [36], [37], [39], [42], [46], [47], [51], [53], [55], [60], [64], [68], [81], [86], [104], [110], [112], [113], [116], [117], [118], [119], [120], [122], [123], [124], [125] [2018-11-10 07:20:50,831 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 07:20:50,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 07:20:51,462 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 07:20:51,462 INFO L272 AbstractInterpreter]: Visited 39 different actions 99 times. Merged at 19 different actions 41 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 51 variables. [2018-11-10 07:20:51,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:20:51,465 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 07:20:51,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 07:20:51,465 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:20:51,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:20:51,475 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 07:20:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:20:51,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:20:51,570 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 07:20:51,571 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:51,574 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:51,574 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-10 07:20:51,801 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:51,802 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:51,803 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:51,804 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 25 treesize of output 42 [2018-11-10 07:20:51,808 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 30 treesize of output 34 [2018-11-10 07:20:51,809 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:51,831 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:51,838 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 07:20:51,838 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:32 [2018-11-10 07:20:51,879 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 07:20:51,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:20:51,881 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:51,882 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:51,890 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 07:20:51,890 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:48 [2018-11-10 07:20:52,181 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 07:20:52,184 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 07:20:52,185 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,187 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,196 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,196 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:340, output treesize:361 [2018-11-10 07:20:52,371 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:52,372 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:52,373 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:52,374 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:52,375 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 37 [2018-11-10 07:20:52,375 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:52,396 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:20:52,413 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:20:52,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 160 [2018-11-10 07:20:52,456 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 66 treesize of output 58 [2018-11-10 07:20:52,465 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 63 [2018-11-10 07:20:52,466 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-10 07:20:52,484 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:20:52,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2018-11-10 07:20:52,525 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 38 treesize of output 32 [2018-11-10 07:20:52,526 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,536 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 96 [2018-11-10 07:20:52,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 38 treesize of output 32 [2018-11-10 07:20:52,543 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,553 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,588 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 86 [2018-11-10 07:20:52,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 63 [2018-11-10 07:20:52,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 07:20:52,602 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,609 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,620 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,625 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 90 [2018-11-10 07:20:52,633 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 63 [2018-11-10 07:20:52,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 07:20:52,635 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,642 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,654 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 80 [2018-11-10 07:20:52,688 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 10 treesize of output 9 [2018-11-10 07:20:52,688 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2018-11-10 07:20:52,706 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,726 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 35 [2018-11-10 07:20:52,727 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-11-10 07:20:52,744 INFO L267 ElimStorePlain]: Start of recursive call 16: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:20:52,748 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 82 [2018-11-10 07:20:52,752 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2018-11-10 07:20:52,753 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:52,795 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 5 case distinctions, treesize of input 27 treesize of output 62 [2018-11-10 07:20:52,796 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 8 xjuncts. [2018-11-10 07:20:52,845 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 07:20:52,845 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:52,876 INFO L267 ElimStorePlain]: Start of recursive call 20: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-10 07:20:52,961 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-11-10 07:20:53,035 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-10 07:20:53,035 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 9 variables, input treesize:408, output treesize:148 [2018-11-10 07:20:53,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 66 treesize of output 58 [2018-11-10 07:20:53,102 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 58 treesize of output 47 [2018-11-10 07:20:53,102 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:53,106 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:53,112 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:53,112 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:81, output treesize:62 [2018-11-10 07:20:53,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 37 [2018-11-10 07:20:53,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2018-11-10 07:20:53,162 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:53,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2018-11-10 07:20:53,168 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-10 07:20:53,170 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:53,172 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:20:53,172 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:60, output treesize:4 [2018-11-10 07:20:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:20:53,179 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 07:20:53,422 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-10 07:20:57,099 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 38 treesize of output 36 [2018-11-10 07:20:57,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 30 [2018-11-10 07:20:57,103 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:57,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:57,111 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 38 treesize of output 36 [2018-11-10 07:20:57,113 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2018-11-10 07:20:57,114 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:57,119 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:20:57,345 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 07:20:57,346 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:264) 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.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) 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 07:20:57,348 INFO L168 Benchmark]: Toolchain (without parser) took 10725.39 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 421.0 MB). Free memory was 951.1 MB in the beginning and 837.5 MB in the end (delta: 113.5 MB). Peak memory consumption was 534.5 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:57,349 INFO L168 Benchmark]: CDTParser took 0.11 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 07:20:57,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 921.5 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:57,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 921.5 MB in the beginning and 1.2 GB in the end (delta: -231.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:57,350 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:57,350 INFO L168 Benchmark]: RCFGBuilder took 311.52 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: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:57,350 INFO L168 Benchmark]: TraceAbstraction took 9982.86 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 262.1 MB). Free memory was 1.1 GB in the beginning and 837.5 MB in the end (delta: 272.5 MB). Peak memory consumption was 534.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:20:57,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 323.78 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 921.5 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 77.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 921.5 MB in the beginning and 1.2 GB in the end (delta: -231.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 311.52 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: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9982.86 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 262.1 MB). Free memory was 1.1 GB in the beginning and 837.5 MB in the end (delta: 272.5 MB). Peak memory consumption was 534.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) 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 07:20:58,826 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:20:58,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:20:58,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:20:58,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:20:58,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:20:58,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:20:58,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:20:58,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:20:58,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:20:58,839 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:20:58,840 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:20:58,840 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:20:58,841 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:20:58,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:20:58,842 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:20:58,843 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:20:58,844 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:20:58,845 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:20:58,847 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:20:58,848 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:20:58,849 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:20:58,851 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:20:58,851 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:20:58,851 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:20:58,852 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:20:58,853 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:20:58,853 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:20:58,854 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:20:58,855 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:20:58,855 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:20:58,856 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:20:58,856 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:20:58,856 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:20:58,856 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:20:58,857 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:20:58,857 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 07:20:58,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:20:58,869 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:20:58,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:20:58,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 07:20:58,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 07:20:58,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 07:20:58,870 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 07:20:58,870 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 07:20:58,870 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 07:20:58,871 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:20:58,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:20:58,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:20:58,872 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:20:58,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:20:58,873 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:20:58,873 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 07:20:58,873 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:20:58,873 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 07:20:58,873 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 07:20:58,873 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_25789742-80d3-49f1-ac08-d49550a24881/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 -> 28eb62e409662a14417b5a67d3fe5de851f13e52 [2018-11-10 07:20:58,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:20:58,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:20:58,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:20:58,918 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:20:58,918 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:20:58,919 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:20:58,962 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/a7d1b099c/fabc94e9448440aeaeb02b2ea8b3348e/FLAG304cee0d0 [2018-11-10 07:20:59,322 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:20:59,323 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/sv-benchmarks/c/list-simple/dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:20:59,330 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/a7d1b099c/fabc94e9448440aeaeb02b2ea8b3348e/FLAG304cee0d0 [2018-11-10 07:20:59,340 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/bin-2019/utaipan/data/a7d1b099c/fabc94e9448440aeaeb02b2ea8b3348e [2018-11-10 07:20:59,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:20:59,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:20:59,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:20:59,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:20:59,347 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:20:59,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6af860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59, skipping insertion in model container [2018-11-10 07:20:59,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:20:59,383 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:20:59,591 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:20:59,600 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:20:59,636 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:20:59,663 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:20:59,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59 WrapperNode [2018-11-10 07:20:59,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:20:59,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:20:59,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:20:59,664 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:20:59,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:20:59,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:20:59,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:20:59,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:20:59,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... [2018-11-10 07:20:59,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:20:59,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:20:59,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:20:59,767 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:20:59,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:20:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-10 07:20:59,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-10 07:20:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 07:20:59,801 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 07:20:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-10 07:20:59,801 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-10 07:20:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:20:59,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:20:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:20:59,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:20:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-10 07:20:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-10 07:20:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-10 07:20:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-10 07:20:59,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:20:59,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:21:00,157 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:21:00,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:21:00 BoogieIcfgContainer [2018-11-10 07:21:00,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:21:00,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:21:00,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:21:00,161 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:21:00,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:20:59" (1/3) ... [2018-11-10 07:21:00,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf48507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:21:00, skipping insertion in model container [2018-11-10 07:21:00,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:20:59" (2/3) ... [2018-11-10 07:21:00,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf48507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:21:00, skipping insertion in model container [2018-11-10 07:21:00,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:21:00" (3/3) ... [2018-11-10 07:21:00,163 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal_true-unreach-call_true-valid-memsafety.i [2018-11-10 07:21:00,169 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:21:00,174 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 07:21:00,183 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 07:21:00,202 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:21:00,202 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:21:00,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:21:00,203 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:21:00,203 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:21:00,203 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:21:00,203 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:21:00,203 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:21:00,203 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:21:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-10 07:21:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 07:21:00,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:21:00,219 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 07:21:00,220 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:21:00,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:21:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash 750227345, now seen corresponding path program 1 times [2018-11-10 07:21:00,227 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 07:21:00,228 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:00,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:00,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:00,349 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 07:21:00,349 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 07:21:00,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:21:00,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:21:00,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 07:21:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 07:21:00,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 07:21:00,371 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-10 07:21:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:21:00,392 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2018-11-10 07:21:00,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 07:21:00,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-11-10 07:21:00,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:21:00,399 INFO L225 Difference]: With dead ends: 93 [2018-11-10 07:21:00,399 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 07:21:00,401 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 07:21:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 07:21:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-10 07:21:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 07:21:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-11-10 07:21:00,425 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2018-11-10 07:21:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:21:00,425 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-11-10 07:21:00,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 07:21:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-11-10 07:21:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 07:21:00,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:21:00,427 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 07:21:00,427 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:21:00,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:21:00,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1936192900, now seen corresponding path program 1 times [2018-11-10 07:21:00,428 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 07:21:00,428 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:00,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:00,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:00,593 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 07:21:00,594 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 07:21:00,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:21:00,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 07:21:00,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 07:21:00,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 07:21:00,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 07:21:00,597 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2018-11-10 07:21:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:21:00,644 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2018-11-10 07:21:00,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 07:21:00,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-10 07:21:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:21:00,645 INFO L225 Difference]: With dead ends: 70 [2018-11-10 07:21:00,645 INFO L226 Difference]: Without dead ends: 45 [2018-11-10 07:21:00,646 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 07:21:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-10 07:21:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-11-10 07:21:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 07:21:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-10 07:21:00,650 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2018-11-10 07:21:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:21:00,650 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-10 07:21:00,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 07:21:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-10 07:21:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 07:21:00,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:21:00,651 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:21:00,652 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:21:00,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:21:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1649863280, now seen corresponding path program 1 times [2018-11-10 07:21:00,652 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 07:21:00,653 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:00,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:00,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:21:00,770 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (4)] Exception during sending of exit command (exit): Broken pipe [2018-11-10 07:21:00,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:21:00,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 07:21:00,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 07:21:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 07:21:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 07:21:00,775 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 3 states. [2018-11-10 07:21:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:21:00,828 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-11-10 07:21:00,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 07:21:00,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-10 07:21:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:21:00,830 INFO L225 Difference]: With dead ends: 76 [2018-11-10 07:21:00,830 INFO L226 Difference]: Without dead ends: 45 [2018-11-10 07:21:00,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 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 07:21:00,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-10 07:21:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-11-10 07:21:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 07:21:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-11-10 07:21:00,834 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 36 [2018-11-10 07:21:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:21:00,834 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-11-10 07:21:00,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 07:21:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-11-10 07:21:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 07:21:00,835 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:21:00,835 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:21:00,835 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:21:00,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:21:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1515849774, now seen corresponding path program 1 times [2018-11-10 07:21:00,836 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 07:21:00,836 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:00,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:00,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:21:01,023 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 07:21:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:21:01,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 07:21:01,146 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:01,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:01,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:01,266 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 07:21:01,269 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 07:21:01,269 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,271 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,273 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2018-11-10 07:21:01,377 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 07:21:01,380 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 07:21:01,380 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,383 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,396 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 07:21:01,398 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 07:21:01,399 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,402 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,410 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,410 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:30, output treesize:15 [2018-11-10 07:21:01,488 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 31 treesize of output 19 [2018-11-10 07:21:01,491 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 19 treesize of output 3 [2018-11-10 07:21:01,491 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,496 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,501 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:01,501 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:31, output treesize:3 [2018-11-10 07:21:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 07:21:01,532 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 07:21:01,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-10 07:21:01,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6] total 17 [2018-11-10 07:21:01,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 07:21:01,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 07:21:01,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-11-10 07:21:01,550 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 17 states. [2018-11-10 07:21:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:21:02,408 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2018-11-10 07:21:02,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 07:21:02,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2018-11-10 07:21:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:21:02,409 INFO L225 Difference]: With dead ends: 76 [2018-11-10 07:21:02,409 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 07:21:02,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2018-11-10 07:21:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 07:21:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2018-11-10 07:21:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-10 07:21:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-11-10 07:21:02,415 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 36 [2018-11-10 07:21:02,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:21:02,415 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-11-10 07:21:02,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 07:21:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-11-10 07:21:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-10 07:21:02,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:21:02,416 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2018-11-10 07:21:02,416 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:21:02,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:21:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash 211174503, now seen corresponding path program 1 times [2018-11-10 07:21:02,417 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 07:21:02,417 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:02,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:02,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:02,729 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 07:21:02,729 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:02,733 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:02,733 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-10 07:21:02,758 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#Ultimate.alloc_#res.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |dll_create_#Ultimate.alloc_#res.base| (_ bv1 1))) (= (_ bv0 1) (select |c_old(#valid)| |dll_create_#Ultimate.alloc_#res.base|)))) is different from true [2018-11-10 07:21:02,833 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:02,835 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:02,837 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 22 treesize of output 29 [2018-11-10 07:21:02,843 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 25 treesize of output 20 [2018-11-10 07:21:02,843 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:02,852 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:02,864 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 07:21:02,865 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:27 [2018-11-10 07:21:02,903 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 07:21:02,907 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 07:21:02,907 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:02,911 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:02,925 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 07:21:02,925 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2018-11-10 07:21:03,387 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 07:21:03,408 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 07:21:03,408 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:03,442 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:03,523 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:03,523 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:292, output treesize:288 [2018-11-10 07:21:04,706 WARN L179 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 55 [2018-11-10 07:21:04,719 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:04,731 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:04,746 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:04,752 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:04,753 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-10 07:21:04,753 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:04,856 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:04,977 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:04,978 INFO L303 Elim1Store]: Index analysis took 141 ms [2018-11-10 07:21:04,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 139 [2018-11-10 07:21:05,146 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-11-10 07:21:05,152 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 77 treesize of output 67 [2018-11-10 07:21:05,189 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 0 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 68 [2018-11-10 07:21:05,190 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-10 07:21:05,350 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:05,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 109 [2018-11-10 07:21:05,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 61 [2018-11-10 07:21:05,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:21:05,602 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,621 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,655 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,661 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 111 [2018-11-10 07:21:05,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 51 treesize of output 63 [2018-11-10 07:21:05,685 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,712 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 115 [2018-11-10 07:21:05,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 51 treesize of output 63 [2018-11-10 07:21:05,741 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,774 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 113 [2018-11-10 07:21:05,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 61 [2018-11-10 07:21:05,827 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 07:21:05,827 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,848 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:05,886 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:06,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 104 [2018-11-10 07:21:06,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 73 [2018-11-10 07:21:06,081 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:06,225 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 76 [2018-11-10 07:21:06,228 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:06,318 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-10 07:21:06,513 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 69 treesize of output 68 [2018-11-10 07:21:06,514 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:06,705 INFO L267 ElimStorePlain]: Start of recursive call 16: 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-10 07:21:06,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 88 [2018-11-10 07:21:06,749 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 62 treesize of output 58 [2018-11-10 07:21:06,778 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2018-11-10 07:21:06,778 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:06,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 50 [2018-11-10 07:21:06,907 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-11-10 07:21:06,965 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:07,022 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:07,038 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 84 [2018-11-10 07:21:07,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 62 treesize of output 58 [2018-11-10 07:21:07,096 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2018-11-10 07:21:07,096 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:07,188 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 50 [2018-11-10 07:21:07,188 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-11-10 07:21:07,238 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:07,286 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:07,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 100 [2018-11-10 07:21:07,319 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 81 treesize of output 80 [2018-11-10 07:21:07,320 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:07,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2018-11-10 07:21:07,428 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:07,530 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 72 [2018-11-10 07:21:07,532 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:07,647 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-10 07:21:07,767 INFO L267 ElimStorePlain]: Start of recursive call 29: 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-10 07:21:08,503 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2018-11-10 07:21:08,507 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-11-10 07:21:08,508 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:08,546 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:08,553 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:08,566 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 42 [2018-11-10 07:21:08,567 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:08,615 INFO L267 ElimStorePlain]: Start of recursive call 34: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:08,623 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 57 [2018-11-10 07:21:08,631 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:08,632 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 25 treesize of output 28 [2018-11-10 07:21:08,633 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:08,659 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 15 treesize of output 7 [2018-11-10 07:21:08,659 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:08,676 INFO L267 ElimStorePlain]: Start of recursive call 37: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:08,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 48 [2018-11-10 07:21:08,690 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-11-10 07:21:08,691 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:08,737 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:08,743 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:08,756 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2018-11-10 07:21:08,757 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:08,800 INFO L267 ElimStorePlain]: Start of recursive call 40: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:08,808 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2018-11-10 07:21:08,827 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:08,834 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:08,850 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 48 [2018-11-10 07:21:08,851 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:08,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 27 treesize of output 22 [2018-11-10 07:21:08,926 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:08,934 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 32 treesize of output 27 [2018-11-10 07:21:08,935 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:08,994 INFO L267 ElimStorePlain]: Start of recursive call 43: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:09,001 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2018-11-10 07:21:09,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-11-10 07:21:09,005 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:09,042 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:09,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2018-11-10 07:21:09,044 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,067 INFO L267 ElimStorePlain]: Start of recursive call 47: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,082 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2018-11-10 07:21:09,110 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:09,123 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:09,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 48 [2018-11-10 07:21:09,145 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:09,233 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 26 treesize of output 19 [2018-11-10 07:21:09,234 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,239 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 21 treesize of output 14 [2018-11-10 07:21:09,239 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,281 INFO L267 ElimStorePlain]: Start of recursive call 50: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:09,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2018-11-10 07:21:09,297 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:09,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2018-11-10 07:21:09,298 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,317 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 5 treesize of output 1 [2018-11-10 07:21:09,317 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,330 INFO L267 ElimStorePlain]: Start of recursive call 54: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,346 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2018-11-10 07:21:09,353 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-11-10 07:21:09,353 INFO L267 ElimStorePlain]: Start of recursive call 58: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:09,387 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:09,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 23 treesize of output 24 [2018-11-10 07:21:09,388 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,408 INFO L267 ElimStorePlain]: Start of recursive call 57: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 79 [2018-11-10 07:21:09,419 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-11-10 07:21:09,419 INFO L267 ElimStorePlain]: Start of recursive call 61: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:09,475 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:09,482 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:09,497 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 50 [2018-11-10 07:21:09,497 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 3 xjuncts. [2018-11-10 07:21:09,570 INFO L267 ElimStorePlain]: Start of recursive call 60: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:09,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 77 [2018-11-10 07:21:09,583 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-11-10 07:21:09,584 INFO L267 ElimStorePlain]: Start of recursive call 64: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:09,631 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:09,632 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 31 treesize of output 32 [2018-11-10 07:21:09,633 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:09,657 INFO L267 ElimStorePlain]: Start of recursive call 63: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:10,178 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 3 dim-0 vars, and 13 xjuncts. [2018-11-10 07:21:10,330 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-10 07:21:10,330 INFO L202 ElimStorePlain]: Needed 65 recursive calls to eliminate 8 variables, input treesize:326, output treesize:82 [2018-11-10 07:21:10,401 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 11 [2018-11-10 07:21:10,404 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 11 treesize of output 3 [2018-11-10 07:21:10,404 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:10,406 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:10,415 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:10,415 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:58, output treesize:47 [2018-11-10 07:21:10,474 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 31 [2018-11-10 07:21:10,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 11 [2018-11-10 07:21:10,476 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:10,482 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2018-11-10 07:21:10,483 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:10,484 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:10,485 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 07:21:10,485 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:48, output treesize:4 [2018-11-10 07:21:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2018-11-10 07:21:10,531 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 07:21:12,108 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 118 [2018-11-10 07:21:12,367 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-11-10 07:21:12,682 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-11-10 07:21:12,989 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-11-10 07:21:21,824 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 37 [2018-11-10 07:21:21,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 07:21:21,827 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_25789742-80d3-49f1-ac08-d49550a24881/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 07:21:21,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:21:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:21:21,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:21:21,974 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 6 treesize of output 5 [2018-11-10 07:21:21,974 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:21,977 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:21,977 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:10 [2018-11-10 07:21:22,192 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 07:21:22,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 07:21:22,195 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:22,197 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:22,205 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 07:21:22,205 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:23 [2018-11-10 07:21:23,067 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 07:21:23,079 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 07:21:23,079 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:23,091 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:23,208 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-11-10 07:21:23,208 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:292, output treesize:288 [2018-11-10 07:21:24,909 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 112 DAG size of output: 47 [2018-11-10 07:21:24,921 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:24,927 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:24,928 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 07:21:24,928 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:25,065 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:25,277 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:21:25,285 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:25,285 INFO L303 Elim1Store]: Index analysis took 247 ms [2018-11-10 07:21:25,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 154 treesize of output 182 [2018-11-10 07:21:44,438 WARN L179 SmtUtils]: Spent 19.00 s on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2018-11-10 07:21:44,449 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:44,453 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:44,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 120 [2018-11-10 07:21:44,627 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-11-10 07:21:44,634 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:21:44,645 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 115 [2018-11-10 07:21:44,646 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:44,722 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:56,397 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 111 treesize of output 107 [2018-11-10 07:21:56,409 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 44 treesize of output 43 [2018-11-10 07:21:56,410 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:56,460 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:21:56,465 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 113 treesize of output 109 [2018-11-10 07:21:56,477 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 44 treesize of output 43 [2018-11-10 07:21:56,477 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-10 07:21:56,527 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:22:09,160 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:09,164 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:09,184 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 125 [2018-11-10 07:22:09,216 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:09,217 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2018-11-10 07:22:09,218 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-10 07:22:09,262 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:22:09,268 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:09,290 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 106 treesize of output 104 [2018-11-10 07:22:09,314 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 47 treesize of output 48 [2018-11-10 07:22:09,314 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-10 07:22:09,352 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:22:12,981 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:12,986 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 94 treesize of output 86 [2018-11-10 07:22:12,994 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 35 treesize of output 26 [2018-11-10 07:22:12,994 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-10 07:22:13,020 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:22:13,024 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:13,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2018-11-10 07:22:13,035 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2018-11-10 07:22:13,035 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-10 07:22:13,054 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 07:22:16,161 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 07:22:16,165 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:16,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 112 [2018-11-10 07:22:16,175 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-10 07:22:16,189 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:16,194 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 07:22:16,231 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 122 [2018-11-10 07:22:16,237 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 21 treesize of output 24 [2018-11-10 07:22:16,445 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 07:22:16,445 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_32 term size 12 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 07:22:16,448 INFO L168 Benchmark]: Toolchain (without parser) took 77104.96 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.4 MB). Free memory was 944.4 MB in the beginning and 1.2 GB in the end (delta: -298.3 MB). Peak memory consumption was 431.2 MB. Max. memory is 11.5 GB. [2018-11-10 07:22:16,449 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 07:22:16,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 1.0 GB. Free memory was 944.4 MB in the beginning and 917.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 07:22:16,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 917.5 MB in the beginning and 1.1 GB in the end (delta: -197.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-11-10 07:22:16,449 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-10 07:22:16,449 INFO L168 Benchmark]: RCFGBuilder took 390.86 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: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:22:16,450 INFO L168 Benchmark]: TraceAbstraction took 76289.36 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 178.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -174.3 MB). Peak memory consumption was 433.6 MB. Max. memory is 11.5 GB. [2018-11-10 07:22:16,451 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 319.54 ms. Allocated memory is still 1.0 GB. Free memory was 944.4 MB in the beginning and 917.5 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 75.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 917.5 MB in the beginning and 1.1 GB in the end (delta: -197.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.63 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 390.86 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: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 76289.36 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 178.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -174.3 MB). Peak memory consumption was 433.6 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_32 term size 12 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_32 term size 12: 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...