./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 9b2ac5a3750101337b54db0fb388c91c5409545e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 9b2ac5a3750101337b54db0fb388c91c5409545e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_24 input size 13 context size 13 output size 13 --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 12:25:36,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:25:36,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:25:36,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:25:36,526 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:25:36,527 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:25:36,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:25:36,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:25:36,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:25:36,530 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:25:36,531 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:25:36,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:25:36,532 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:25:36,532 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:25:36,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:25:36,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:25:36,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:25:36,535 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:25:36,537 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:25:36,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:25:36,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:25:36,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:25:36,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:25:36,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:25:36,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:25:36,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:25:36,541 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:25:36,542 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:25:36,543 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:25:36,543 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:25:36,543 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:25:36,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:25:36,544 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:25:36,544 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:25:36,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:25:36,545 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:25:36,546 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 12:25:36,554 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:25:36,554 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:25:36,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:25:36,554 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 12:25:36,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 12:25:36,555 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 12:25:36,555 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 12:25:36,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:25:36,556 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 12:25:36,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:25:36,556 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 12:25:36,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:25:36,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:25:36,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:25:36,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:25:36,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:25:36,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 12:25:36,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:25:36,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:25:36,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:25:36,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:25:36,559 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 12:25:36,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:25:36,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 12:25:36,559 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 12:25:36,559 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_346a94d9-3424-4c08-9058-fb3001cd82e8/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 -> 9b2ac5a3750101337b54db0fb388c91c5409545e [2018-11-23 12:25:36,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:25:36,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:25:36,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:25:36,596 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:25:36,596 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:25:36,596 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-23 12:25:36,640 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/da815aff6/011c23517c554557b9afecbce1491067/FLAGdf1b973e3 [2018-11-23 12:25:37,097 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:25:37,097 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-23 12:25:37,106 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/da815aff6/011c23517c554557b9afecbce1491067/FLAGdf1b973e3 [2018-11-23 12:25:37,118 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/da815aff6/011c23517c554557b9afecbce1491067 [2018-11-23 12:25:37,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:25:37,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:25:37,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:25:37,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:25:37,124 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:25:37,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8dd392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37, skipping insertion in model container [2018-11-23 12:25:37,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:25:37,167 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:25:37,367 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:25:37,375 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:25:37,446 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:25:37,479 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:25:37,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37 WrapperNode [2018-11-23 12:25:37,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:25:37,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:25:37,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:25:37,480 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:25:37,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:25:37,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:25:37,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:25:37,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:25:37,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... [2018-11-23 12:25:37,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:25:37,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:25:37,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:25:37,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:25:37,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:25:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-23 12:25:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-23 12:25:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 12:25:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 12:25:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-23 12:25:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-23 12:25:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 12:25:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-23 12:25:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-23 12:25:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 12:25:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 12:25:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-23 12:25:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-23 12:25:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-23 12:25:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-23 12:25:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:25:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:25:37,816 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:25:37,816 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-23 12:25:37,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:25:37 BoogieIcfgContainer [2018-11-23 12:25:37,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:25:37,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 12:25:37,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 12:25:37,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 12:25:37,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:25:37" (1/3) ... [2018-11-23 12:25:37,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204274a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:25:37, skipping insertion in model container [2018-11-23 12:25:37,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:25:37" (2/3) ... [2018-11-23 12:25:37,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204274a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:25:37, skipping insertion in model container [2018-11-23 12:25:37,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:25:37" (3/3) ... [2018-11-23 12:25:37,822 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-23 12:25:37,828 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 12:25:37,832 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 12:25:37,841 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 12:25:37,866 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 12:25:37,866 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 12:25:37,866 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 12:25:37,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:25:37,866 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:25:37,866 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 12:25:37,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:25:37,866 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 12:25:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-23 12:25:37,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 12:25:37,882 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:25:37,882 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:25:37,884 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:25:37,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash -8262080, now seen corresponding path program 1 times [2018-11-23 12:25:37,891 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:25:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:37,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:37,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:37,927 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:25:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:25:38,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:25:38,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 12:25:38,025 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:25:38,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 12:25:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 12:25:38,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 12:25:38,043 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-11-23 12:25:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:25:38,061 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-11-23 12:25:38,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 12:25:38,062 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-23 12:25:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:25:38,067 INFO L225 Difference]: With dead ends: 86 [2018-11-23 12:25:38,067 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 12:25:38,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 12:25:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 12:25:38,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-23 12:25:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-23 12:25:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-23 12:25:38,093 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2018-11-23 12:25:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:25:38,093 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-23 12:25:38,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 12:25:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-23 12:25:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 12:25:38,094 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:25:38,094 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:25:38,094 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:25:38,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:38,095 INFO L82 PathProgramCache]: Analyzing trace with hash -8270729, now seen corresponding path program 1 times [2018-11-23 12:25:38,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:25:38,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:38,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,096 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:25:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:25:38,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:25:38,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-23 12:25:38,257 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:25:38,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 12:25:38,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 12:25:38,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-23 12:25:38,259 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2018-11-23 12:25:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:25:38,392 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-11-23 12:25:38,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 12:25:38,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-11-23 12:25:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:25:38,394 INFO L225 Difference]: With dead ends: 43 [2018-11-23 12:25:38,394 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 12:25:38,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-11-23 12:25:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 12:25:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-11-23 12:25:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-23 12:25:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-11-23 12:25:38,400 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2018-11-23 12:25:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:25:38,400 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-11-23 12:25:38,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 12:25:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-11-23 12:25:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 12:25:38,401 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:25:38,401 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:25:38,401 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:25:38,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:38,402 INFO L82 PathProgramCache]: Analyzing trace with hash -8269055, now seen corresponding path program 1 times [2018-11-23 12:25:38,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:25:38,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:38,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,403 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:25:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:25:38,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:25:38,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:25:38,456 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:25:38,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:25:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:25:38,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:25:38,457 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-11-23 12:25:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:25:38,490 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-11-23 12:25:38,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 12:25:38,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-23 12:25:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:25:38,492 INFO L225 Difference]: With dead ends: 66 [2018-11-23 12:25:38,492 INFO L226 Difference]: Without dead ends: 42 [2018-11-23 12:25:38,492 INFO L631 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 [2018-11-23 12:25:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-23 12:25:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-23 12:25:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 12:25:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-23 12:25:38,497 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-11-23 12:25:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:25:38,497 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-23 12:25:38,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:25:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-23 12:25:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 12:25:38,498 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:25:38,498 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:25:38,499 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:25:38,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:38,499 INFO L82 PathProgramCache]: Analyzing trace with hash 8420605, now seen corresponding path program 1 times [2018-11-23 12:25:38,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:25:38,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:38,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,500 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:25:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:25:38,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:25:38,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 12:25:38,544 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:25:38,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 12:25:38,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 12:25:38,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 12:25:38,545 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2018-11-23 12:25:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:25:38,565 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2018-11-23 12:25:38,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 12:25:38,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-23 12:25:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:25:38,567 INFO L225 Difference]: With dead ends: 71 [2018-11-23 12:25:38,567 INFO L226 Difference]: Without dead ends: 42 [2018-11-23 12:25:38,567 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 12:25:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-23 12:25:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-23 12:25:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 12:25:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-23 12:25:38,572 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 35 [2018-11-23 12:25:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:25:38,572 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-23 12:25:38,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 12:25:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-23 12:25:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 12:25:38,573 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:25:38,573 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:25:38,573 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:25:38,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash -125592901, now seen corresponding path program 1 times [2018-11-23 12:25:38,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:25:38,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:38,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:38,575 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:25:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:25:38,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:25:38,651 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 12:25:38,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2018-11-23 12:25:38,653 INFO L202 CegarAbsIntRunner]: [0], [2], [4], [13], [16], [29], [51], [52], [53], [60], [62], [68], [70], [75], [77], [81], [82], [83], [85], [88], [92], [93], [97], [103], [105], [106], [107], [108], [109], [110], [115], [116], [117], [118], [119] [2018-11-23 12:25:38,678 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 12:25:38,679 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 12:25:38,808 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 12:25:38,810 INFO L272 AbstractInterpreter]: Visited 14 different actions 19 times. Merged at 4 different actions 4 times. Never widened. Performed 187 root evaluator evaluations with a maximum evaluation depth of 3. Performed 187 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 30 variables. [2018-11-23 12:25:38,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:38,830 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 12:25:38,887 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 76.98% of their original sizes. [2018-11-23 12:25:38,887 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 12:25:38,953 INFO L415 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2018-11-23 12:25:38,953 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 12:25:38,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 12:25:38,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-23 12:25:38,954 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 12:25:38,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 12:25:38,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 12:25:38,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-23 12:25:38,955 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-11-23 12:25:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:25:39,311 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2018-11-23 12:25:39,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 12:25:39,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-11-23 12:25:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:25:39,312 INFO L225 Difference]: With dead ends: 71 [2018-11-23 12:25:39,312 INFO L226 Difference]: Without dead ends: 47 [2018-11-23 12:25:39,313 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-23 12:25:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-23 12:25:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-11-23 12:25:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-23 12:25:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-11-23 12:25:39,318 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 35 [2018-11-23 12:25:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:25:39,319 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-11-23 12:25:39,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 12:25:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-11-23 12:25:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 12:25:39,320 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:25:39,320 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-23 12:25:39,320 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:25:39,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1374189955, now seen corresponding path program 1 times [2018-11-23 12:25:39,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 12:25:39,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:39,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:39,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:25:39,323 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 12:25:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:25:40,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:25:40,278 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 12:25:40,279 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-11-23 12:25:40,279 INFO L202 CegarAbsIntRunner]: [0], [2], [4], [13], [16], [29], [51], [52], [53], [60], [62], [68], [70], [73], [75], [77], [81], [82], [83], [85], [88], [92], [93], [97], [103], [105], [106], [107], [108], [109], [110], [115], [116], [117], [118], [119] [2018-11-23 12:25:40,281 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 12:25:40,281 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 12:25:40,352 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 12:25:40,353 INFO L272 AbstractInterpreter]: Visited 36 different actions 61 times. Merged at 9 different actions 19 times. Never widened. Performed 622 root evaluator evaluations with a maximum evaluation depth of 3. Performed 622 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 5 fixpoints after 3 different actions. Largest state had 30 variables. [2018-11-23 12:25:40,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:25:40,355 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 12:25:40,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:25:40,355 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:25:40,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:25:40,361 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 12:25:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:25:40,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:25:40,433 INFO L478 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 [2018-11-23 12:25:40,435 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:25:40,440 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:25:40,440 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-23 12:25:56,108 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:25:56,108 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:25:56,109 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-23 12:25:56,121 INFO L478 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 23 treesize of output 20 [2018-11-23 12:25:56,121 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:25:56,125 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:25:56,132 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. [2018-11-23 12:25:56,132 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:26 [2018-11-23 12:25:57,420 INFO L478 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 [2018-11-23 12:25:57,421 INFO L478 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 [2018-11-23 12:25:57,422 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:25:57,425 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:25:57,431 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:25:57,431 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-11-23 12:26:01,037 INFO L478 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 27 treesize of output 22 [2018-11-23 12:26:01,040 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:01,041 INFO L478 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 22 treesize of output 14 [2018-11-23 12:26:01,041 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:01,045 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:01,057 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:01,059 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:01,069 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:01,069 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:79, output treesize:62 [2018-11-23 12:26:04,565 WARN L180 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-23 12:26:04,586 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 211 [2018-11-23 12:26:04,589 INFO L478 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 159 treesize of output 53 [2018-11-23 12:26:04,590 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:04,620 INFO L478 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 156 treesize of output 103 [2018-11-23 12:26:04,621 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-23 12:26:04,631 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:26:04,645 INFO L478 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 54 treesize of output 52 [2018-11-23 12:26:04,647 INFO L478 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 7 treesize of output 1 [2018-11-23 12:26:04,648 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:04,650 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:04,659 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-23 12:26:04,659 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:172, output treesize:82 [2018-11-23 12:26:07,050 INFO L478 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 50 treesize of output 47 [2018-11-23 12:26:07,053 INFO L478 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 [2018-11-23 12:26:07,053 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,061 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,065 INFO L478 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 85 treesize of output 82 [2018-11-23 12:26:07,067 INFO L478 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 [2018-11-23 12:26:07,068 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,086 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,132 INFO L478 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 46 treesize of output 43 [2018-11-23 12:26:07,134 INFO L478 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 [2018-11-23 12:26:07,134 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,140 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,144 INFO L478 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 81 treesize of output 78 [2018-11-23 12:26:07,147 INFO L478 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 [2018-11-23 12:26:07,147 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,157 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,188 INFO L478 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 77 treesize of output 74 [2018-11-23 12:26:07,191 INFO L478 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 12 treesize of output 1 [2018-11-23 12:26:07,191 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,197 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,235 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 66 [2018-11-23 12:26:07,237 INFO L478 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 51 treesize of output 39 [2018-11-23 12:26:07,238 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:07,290 INFO L478 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 44 treesize of output 38 [2018-11-23 12:26:07,291 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-23 12:26:07,303 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:26:07,323 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-11-23 12:26:07,323 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-11-23 12:26:09,573 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:09,573 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:09,574 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:09,575 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:09,576 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2018-11-23 12:26:09,576 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,585 INFO L478 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 12 treesize of output 10 [2018-11-23 12:26:09,587 INFO L478 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 10 treesize of output 8 [2018-11-23 12:26:09,587 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,588 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,595 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,595 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:166, output treesize:33 [2018-11-23 12:26:09,629 INFO L478 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 27 treesize of output 21 [2018-11-23 12:26:09,630 INFO L478 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 21 treesize of output 12 [2018-11-23 12:26:09,630 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,633 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,640 INFO L478 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 15 treesize of output 11 [2018-11-23 12:26:09,641 INFO L478 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 [2018-11-23 12:26:09,641 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,642 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,647 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,647 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:44, output treesize:14 [2018-11-23 12:26:09,683 INFO L478 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 [2018-11-23 12:26:09,684 INFO L478 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 [2018-11-23 12:26:09,684 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,685 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,687 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:09,687 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2018-11-23 12:26:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:26:09,709 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:26:09,988 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2018-11-23 12:26:10,180 INFO L478 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 19 treesize of output 16 [2018-11-23 12:26:10,183 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2018-11-23 12:26:10,186 INFO L478 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 20 treesize of output 8 [2018-11-23 12:26:10,187 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,189 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,191 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,203 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,206 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,217 INFO L478 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 60 treesize of output 56 [2018-11-23 12:26:10,219 INFO L478 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 56 treesize of output 52 [2018-11-23 12:26:10,220 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,222 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,232 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,234 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,242 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,245 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:10,267 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 106 [2018-11-23 12:26:10,337 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:10,337 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:10,338 INFO L478 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 68 treesize of output 70 [2018-11-23 12:26:10,338 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,340 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:10,341 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:10,341 INFO L478 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 68 treesize of output 70 [2018-11-23 12:26:10,342 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,350 INFO L478 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 69 treesize of output 95 [2018-11-23 12:26:10,351 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-11-23 12:26:10,353 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:10,353 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:10,354 INFO L478 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 68 treesize of output 70 [2018-11-23 12:26:10,354 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,423 INFO L478 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 70 treesize of output 69 [2018-11-23 12:26:10,424 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,487 INFO L478 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 69 treesize of output 47 [2018-11-23 12:26:10,489 INFO L478 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 8 treesize of output 1 [2018-11-23 12:26:10,489 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,495 INFO L478 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 6 treesize of output 1 [2018-11-23 12:26:10,495 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,500 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,547 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 53 [2018-11-23 12:26:10,549 INFO L478 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 39 treesize of output 33 [2018-11-23 12:26:10,549 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,564 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2018-11-23 12:26:10,565 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-11-23 12:26:10,579 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:26:10,616 INFO L478 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 40 treesize of output 20 [2018-11-23 12:26:10,617 INFO L478 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 8 treesize of output 1 [2018-11-23 12:26:10,618 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,621 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,622 INFO L478 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 63 treesize of output 43 [2018-11-23 12:26:10,624 INFO L478 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 8 treesize of output 1 [2018-11-23 12:26:10,624 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,629 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,630 INFO L478 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 63 treesize of output 43 [2018-11-23 12:26:10,632 INFO L478 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 8 treesize of output 1 [2018-11-23 12:26:10,632 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,636 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:10,654 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:26:10,674 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 6 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-23 12:26:10,675 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 7 variables, input treesize:147, output treesize:76 [2018-11-23 12:26:12,209 INFO L478 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 13 [2018-11-23 12:26:12,211 INFO L478 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 13 treesize of output 11 [2018-11-23 12:26:12,211 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,214 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,230 INFO L478 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 11 treesize of output 9 [2018-11-23 12:26:12,232 INFO L478 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 9 treesize of output 7 [2018-11-23 12:26:12,232 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,234 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,250 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,253 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,254 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,259 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,260 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,267 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,268 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,274 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:12,496 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:26:12,497 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:214) 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:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-11-23 12:26:12,499 INFO L168 Benchmark]: Toolchain (without parser) took 35379.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 957.5 MB in the beginning and 1.0 GB in the end (delta: -89.5 MB). Peak memory consumption was 98.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:26:12,500 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:26:12,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-23 12:26:12,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:26:12,501 INFO L168 Benchmark]: Boogie Preprocessor took 21.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:26:12,501 INFO L168 Benchmark]: RCFGBuilder took 297.07 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-11-23 12:26:12,501 INFO L168 Benchmark]: TraceAbstraction took 34681.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.0 MB). Peak memory consumption was 93.6 MB. Max. memory is 11.5 GB. [2018-11-23 12:26:12,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 297.07 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 34681.16 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.0 MB). Peak memory consumption was 93.6 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-aa41828 [2018-11-23 12:26:13,857 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:26:13,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:26:13,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:26:13,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:26:13,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:26:13,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:26:13,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:26:13,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:26:13,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:26:13,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:26:13,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:26:13,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:26:13,873 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:26:13,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:26:13,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:26:13,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:26:13,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:26:13,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:26:13,879 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:26:13,879 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:26:13,880 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:26:13,882 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:26:13,882 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:26:13,882 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:26:13,883 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:26:13,884 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:26:13,884 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:26:13,885 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:26:13,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:26:13,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:26:13,887 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:26:13,887 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:26:13,887 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:26:13,888 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:26:13,888 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:26:13,888 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 12:26:13,899 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:26:13,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:26:13,900 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:26:13,900 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 12:26:13,900 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 12:26:13,900 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 12:26:13,900 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 12:26:13,900 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 12:26:13,900 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 12:26:13,900 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 12:26:13,901 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:26:13,901 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 12:26:13,901 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 12:26:13,901 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:26:13,901 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:26:13,901 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:26:13,902 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:26:13,902 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:26:13,903 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:26:13,903 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 12:26:13,904 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 12:26:13,904 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 12:26:13,904 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_346a94d9-3424-4c08-9058-fb3001cd82e8/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 -> 9b2ac5a3750101337b54db0fb388c91c5409545e [2018-11-23 12:26:13,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:26:13,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:26:13,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:26:13,947 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:26:13,947 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:26:13,948 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-23 12:26:13,983 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/2114e1108/8342a0dac49b44a19ad8615588ea4c01/FLAG9cbf491b4 [2018-11-23 12:26:14,413 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:26:14,414 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/sv-benchmarks/c/list-simple/dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-23 12:26:14,423 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/2114e1108/8342a0dac49b44a19ad8615588ea4c01/FLAG9cbf491b4 [2018-11-23 12:26:14,431 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/data/2114e1108/8342a0dac49b44a19ad8615588ea4c01 [2018-11-23 12:26:14,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:26:14,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:26:14,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:26:14,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:26:14,438 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:26:14,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7534d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14, skipping insertion in model container [2018-11-23 12:26:14,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:26:14,479 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:26:14,707 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:26:14,717 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:26:14,792 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:26:14,819 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:26:14,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14 WrapperNode [2018-11-23 12:26:14,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:26:14,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:26:14,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:26:14,820 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:26:14,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:26:14,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:26:14,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:26:14,842 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:26:14,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... [2018-11-23 12:26:14,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:26:14,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:26:14,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:26:14,872 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:26:14,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2018-11-23 12:26:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2018-11-23 12:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 12:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-23 12:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-23 12:26:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-23 12:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-11-23 12:26:14,908 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-11-23 12:26:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 12:26:14,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 12:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 12:26:14,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 12:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 12:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 12:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 12:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 12:26:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 12:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2018-11-23 12:26:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2018-11-23 12:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2018-11-23 12:26:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2018-11-23 12:26:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:26:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:26:15,385 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:26:15,385 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-23 12:26:15,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:26:15 BoogieIcfgContainer [2018-11-23 12:26:15,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:26:15,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 12:26:15,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 12:26:15,388 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 12:26:15,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:26:14" (1/3) ... [2018-11-23 12:26:15,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce4d776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:26:15, skipping insertion in model container [2018-11-23 12:26:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:26:14" (2/3) ... [2018-11-23 12:26:15,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce4d776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:26:15, skipping insertion in model container [2018-11-23 12:26:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:26:15" (3/3) ... [2018-11-23 12:26:15,390 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal_true-unreach-call_true-valid-memsafety.i [2018-11-23 12:26:15,397 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 12:26:15,401 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 12:26:15,410 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 12:26:15,430 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 12:26:15,430 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 12:26:15,430 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 12:26:15,431 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 12:26:15,431 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:26:15,431 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:26:15,431 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 12:26:15,431 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:26:15,431 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 12:26:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-11-23 12:26:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 12:26:15,447 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:26:15,448 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:26:15,449 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:26:15,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:26:15,452 INFO L82 PathProgramCache]: Analyzing trace with hash -8262080, now seen corresponding path program 1 times [2018-11-23 12:26:15,455 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:26:15,455 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:15,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:15,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:26:15,558 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:26:15,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:26:15,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 12:26:15,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 12:26:15,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 12:26:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 12:26:15,575 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-11-23 12:26:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:26:15,593 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-11-23 12:26:15,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 12:26:15,594 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-11-23 12:26:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:26:15,601 INFO L225 Difference]: With dead ends: 86 [2018-11-23 12:26:15,602 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 12:26:15,605 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 12:26:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 12:26:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-23 12:26:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-23 12:26:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-11-23 12:26:15,634 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2018-11-23 12:26:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:26:15,634 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-11-23 12:26:15,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 12:26:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-11-23 12:26:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-23 12:26:15,635 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:26:15,635 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:26:15,635 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:26:15,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:26:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash -8270729, now seen corresponding path program 1 times [2018-11-23 12:26:15,636 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:26:15,636 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:15,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:15,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:26:15,749 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:26:15,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:26:15,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 12:26:15,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 12:26:15,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:26:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:26:15,753 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2018-11-23 12:26:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:26:15,804 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-11-23 12:26:15,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 12:26:15,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-11-23 12:26:15,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:26:15,805 INFO L225 Difference]: With dead ends: 64 [2018-11-23 12:26:15,805 INFO L226 Difference]: Without dead ends: 41 [2018-11-23 12:26:15,806 INFO L631 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 [2018-11-23 12:26:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-23 12:26:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-11-23 12:26:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-23 12:26:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-11-23 12:26:15,811 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2018-11-23 12:26:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:26:15,811 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-11-23 12:26:15,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 12:26:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-11-23 12:26:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 12:26:15,812 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:26:15,812 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:26:15,812 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:26:15,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:26:15,813 INFO L82 PathProgramCache]: Analyzing trace with hash 8418931, now seen corresponding path program 1 times [2018-11-23 12:26:15,813 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:26:15,813 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:15,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:15,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:26:15,922 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:26:15,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:26:15,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 12:26:15,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 12:26:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 12:26:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 12:26:15,924 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 3 states. [2018-11-23 12:26:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:26:16,111 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2018-11-23 12:26:16,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 12:26:16,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-23 12:26:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:26:16,113 INFO L225 Difference]: With dead ends: 69 [2018-11-23 12:26:16,113 INFO L226 Difference]: Without dead ends: 41 [2018-11-23 12:26:16,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 12:26:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-23 12:26:16,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-11-23 12:26:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-23 12:26:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-11-23 12:26:16,118 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2018-11-23 12:26:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:26:16,118 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-11-23 12:26:16,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 12:26:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-11-23 12:26:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-23 12:26:16,119 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:26:16,119 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 12:26:16,120 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:26:16,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:26:16,120 INFO L82 PathProgramCache]: Analyzing trace with hash -125594575, now seen corresponding path program 1 times [2018-11-23 12:26:16,120 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:26:16,120 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:16,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:16,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:26:16,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:26:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:26:16,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:26:16,366 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:16,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:16,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:16,562 INFO L478 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 [2018-11-23 12:26:16,565 INFO L478 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 [2018-11-23 12:26:16,565 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:16,567 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:16,573 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:16,574 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2018-11-23 12:26:16,636 INFO L478 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 16 treesize of output 12 [2018-11-23 12:26:16,642 INFO L478 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 12 treesize of output 4 [2018-11-23 12:26:16,642 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:16,644 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:16,645 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:16,645 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2018-11-23 12:26:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 12:26:16,666 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 12:26:16,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 12:26:16,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6] total 17 [2018-11-23 12:26:16,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 12:26:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 12:26:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-11-23 12:26:16,691 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 17 states. [2018-11-23 12:26:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:26:17,541 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2018-11-23 12:26:17,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 12:26:17,542 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2018-11-23 12:26:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:26:17,543 INFO L225 Difference]: With dead ends: 73 [2018-11-23 12:26:17,543 INFO L226 Difference]: Without dead ends: 50 [2018-11-23 12:26:17,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2018-11-23 12:26:17,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-23 12:26:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2018-11-23 12:26:17,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-23 12:26:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-11-23 12:26:17,549 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 35 [2018-11-23 12:26:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:26:17,550 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-11-23 12:26:17,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 12:26:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-11-23 12:26:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 12:26:17,551 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:26:17,551 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-23 12:26:17,551 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:26:17,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:26:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1374189955, now seen corresponding path program 1 times [2018-11-23 12:26:17,552 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:26:17,552 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:17,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:17,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:17,726 INFO L478 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 [2018-11-23 12:26:17,727 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:17,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:17,738 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-23 12:26:18,253 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-23 12:26:20,264 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) c_dll_create_~new_head~0.base (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-23 12:26:22,271 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) c_dll_create_~head~0.base (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-23 12:26:23,006 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) |c_dll_create_#res.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-23 12:26:23,017 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:23,018 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:23,020 INFO L478 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 [2018-11-23 12:26:23,026 INFO L478 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 25 treesize of output 20 [2018-11-23 12:26:23,026 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,033 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,043 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. [2018-11-23 12:26:23,043 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:28 [2018-11-23 12:26:23,168 INFO L478 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 [2018-11-23 12:26:23,174 INFO L478 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 [2018-11-23 12:26:23,174 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,181 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,214 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,215 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-11-23 12:26:23,382 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:23,396 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:23,533 INFO L478 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 27 treesize of output 22 [2018-11-23 12:26:23,542 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:23,550 INFO L478 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 22 treesize of output 14 [2018-11-23 12:26:23,550 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,571 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:23,648 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:23,648 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:83, output treesize:70 [2018-11-23 12:26:25,794 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-23 12:26:25,807 INFO L478 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 174 treesize of output 170 [2018-11-23 12:26:25,814 INFO L478 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 170 treesize of output 166 [2018-11-23 12:26:25,815 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:25,830 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:25,955 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 235 [2018-11-23 12:26:26,072 INFO L478 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 172 treesize of output 115 [2018-11-23 12:26:26,073 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-23 12:26:26,193 INFO L478 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 122 treesize of output 7 [2018-11-23 12:26:26,193 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:26,227 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:26:26,289 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-23 12:26:26,289 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:196, output treesize:90 [2018-11-23 12:26:26,508 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 62 [2018-11-23 12:26:26,514 INFO L478 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 51 treesize of output 39 [2018-11-23 12:26:26,515 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:26,628 INFO L478 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 48 treesize of output 42 [2018-11-23 12:26:26,629 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-23 12:26:26,689 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:26:26,985 INFO L478 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 35 treesize of output 32 [2018-11-23 12:26:26,987 INFO L478 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 [2018-11-23 12:26:26,988 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,002 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,041 INFO L478 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 85 treesize of output 82 [2018-11-23 12:26:27,054 INFO L478 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 [2018-11-23 12:26:27,054 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,149 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,154 INFO L478 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 34 treesize of output 31 [2018-11-23 12:26:27,157 INFO L478 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 [2018-11-23 12:26:27,157 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,167 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,368 INFO L478 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 31 treesize of output 28 [2018-11-23 12:26:27,370 INFO L478 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 [2018-11-23 12:26:27,370 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,379 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,382 INFO L478 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 30 treesize of output 27 [2018-11-23 12:26:27,384 INFO L478 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 [2018-11-23 12:26:27,384 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,392 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,405 INFO L478 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 81 treesize of output 78 [2018-11-23 12:26:27,413 INFO L478 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 [2018-11-23 12:26:27,413 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,448 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,578 INFO L478 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 77 treesize of output 74 [2018-11-23 12:26:27,585 INFO L478 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 12 treesize of output 1 [2018-11-23 12:26:27,585 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,623 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:27,755 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-11-23 12:26:27,755 INFO L202 ElimStorePlain]: Needed 18 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-11-23 12:26:27,927 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2018-11-23 12:26:28,000 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:28,002 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:28,003 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:28,008 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:28,009 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2018-11-23 12:26:28,009 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,032 INFO L478 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 12 treesize of output 10 [2018-11-23 12:26:28,035 INFO L478 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 10 treesize of output 8 [2018-11-23 12:26:28,035 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,037 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,052 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,052 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:174, output treesize:35 [2018-11-23 12:26:28,103 INFO L478 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 [2018-11-23 12:26:28,105 INFO L478 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 [2018-11-23 12:26:28,105 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,107 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,118 INFO L478 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 27 treesize of output 21 [2018-11-23 12:26:28,122 INFO L478 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 21 treesize of output 12 [2018-11-23 12:26:28,122 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,127 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,135 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,136 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:46, output treesize:16 [2018-11-23 12:26:28,180 INFO L478 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 [2018-11-23 12:26:28,182 INFO L478 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 [2018-11-23 12:26:28,182 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,183 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,186 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:28,186 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-11-23 12:26:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2018-11-23 12:26:28,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:26:28,619 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-11-23 12:26:28,722 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-11-23 12:26:33,378 WARN L180 SmtUtils]: Spent 4.66 s on a formula simplification that was a NOOP. DAG size: 109 [2018-11-23 12:26:34,161 WARN L180 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-11-23 12:26:35,658 WARN L180 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 90 [2018-11-23 12:26:37,122 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 86 [2018-11-23 12:26:37,294 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-23 12:26:37,295 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:37,318 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:37,452 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:37,481 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:37,629 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 73 [2018-11-23 12:26:37,644 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2018-11-23 12:26:37,680 INFO L478 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 16 treesize of output 17 [2018-11-23 12:26:37,680 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:37,720 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:37,909 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 75 [2018-11-23 12:26:37,927 INFO L478 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 59 treesize of output 58 [2018-11-23 12:26:37,927 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:38,750 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 56 treesize of output 89 [2018-11-23 12:26:38,751 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-11-23 12:26:40,017 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:40,018 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:40,019 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 71 [2018-11-23 12:26:40,031 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:40,034 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:40,048 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 55 [2018-11-23 12:26:40,049 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:40,094 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:40,108 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:40,109 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:40,110 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 67 [2018-11-23 12:26:40,116 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:40,129 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:40,202 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 86 [2018-11-23 12:26:40,203 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 3 xjuncts. [2018-11-23 12:26:40,401 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:26:40,486 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 81 [2018-11-23 12:26:40,494 INFO L478 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 56 [2018-11-23 12:26:40,494 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:40,631 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:40,683 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 74 [2018-11-23 12:26:40,683 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 4 xjuncts. [2018-11-23 12:26:40,836 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:26:41,669 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:41,710 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:41,759 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 83 [2018-11-23 12:26:41,767 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:41,777 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:41,860 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 114 [2018-11-23 12:26:41,861 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 4 xjuncts. [2018-11-23 12:26:42,289 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:42,304 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:42,334 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:42,361 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 86 [2018-11-23 12:26:42,362 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 3 xjuncts. [2018-11-23 12:26:42,765 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-23 12:26:43,803 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:43,852 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:43,906 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 82 [2018-11-23 12:26:43,913 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:43,916 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:43,938 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2018-11-23 12:26:43,938 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:44,129 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:44,148 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:44,180 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:26:44,217 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 86 [2018-11-23 12:26:44,218 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 3 xjuncts. [2018-11-23 12:26:44,620 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:26:45,046 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-11-23 12:26:45,523 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-11-23 12:26:45,803 INFO L478 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 45 treesize of output 41 [2018-11-23 12:26:45,809 INFO L478 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 17 treesize of output 4 [2018-11-23 12:26:45,809 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:45,841 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:45,844 INFO L478 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 49 treesize of output 45 [2018-11-23 12:26:45,849 INFO L478 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 25 treesize of output 12 [2018-11-23 12:26:45,849 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:45,875 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:45,880 INFO L478 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 35 treesize of output 33 [2018-11-23 12:26:45,886 INFO L478 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 16 treesize of output 14 [2018-11-23 12:26:45,886 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:45,923 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:45,927 INFO L478 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 45 treesize of output 41 [2018-11-23 12:26:45,934 INFO L478 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 8 [2018-11-23 12:26:45,935 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:45,965 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:45,970 INFO L478 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 49 treesize of output 45 [2018-11-23 12:26:45,976 INFO L478 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 25 treesize of output 12 [2018-11-23 12:26:45,976 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,004 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,231 INFO L267 ElimStorePlain]: Start of recursive call 36: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,257 INFO L267 ElimStorePlain]: Start of recursive call 35: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,258 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,280 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,281 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,306 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,307 INFO L267 ElimStorePlain]: Start of recursive call 42: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,334 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,335 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,357 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:46,707 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 40 [2018-11-23 12:26:46,715 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 18 treesize of output 3 [2018-11-23 12:26:46,715 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,729 INFO L267 ElimStorePlain]: Start of recursive call 45: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,736 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:46,737 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2018-11-23 12:26:46,739 INFO L478 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 12 treesize of output 3 [2018-11-23 12:26:46,740 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,760 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,770 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:46,771 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 64 [2018-11-23 12:26:46,783 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 12 treesize of output 3 [2018-11-23 12:26:46,783 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,801 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,828 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2018-11-23 12:26:46,834 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 49 treesize of output 41 [2018-11-23 12:26:46,835 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:46,924 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2018-11-23 12:26:46,925 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 4 xjuncts. [2018-11-23 12:26:47,031 INFO L478 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 38 treesize of output 30 [2018-11-23 12:26:47,031 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:47,113 INFO L267 ElimStorePlain]: Start of recursive call 51: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-23 12:26:47,115 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 60 [2018-11-23 12:26:47,119 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 12 treesize of output 3 [2018-11-23 12:26:47,120 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:47,133 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:47,519 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 6 dim-2 vars, End of recursive call: 7 dim-0 vars, and 5 xjuncts. [2018-11-23 12:26:47,520 INFO L202 ElimStorePlain]: Needed 56 recursive calls to eliminate 7 variables, input treesize:147, output treesize:178 [2018-11-23 12:26:47,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:26:47,712 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/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 [2018-11-23 12:26:47,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:26:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:26:47,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:26:47,768 INFO L478 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 [2018-11-23 12:26:47,769 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:47,770 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:47,770 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-23 12:26:59,409 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)))) (and (= |c_#valid| (store .cse0 |c_dll_create_#res.base| (_ bv1 1))) (= (select .cse0 |c_dll_create_#res.base|) (_ bv0 1)) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1))))) is different from true [2018-11-23 12:26:59,422 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:59,422 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:59,423 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:59,424 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 40 [2018-11-23 12:26:59,426 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 34 [2018-11-23 12:26:59,427 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:59,435 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:59,444 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. [2018-11-23 12:26:59,444 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:29 [2018-11-23 12:26:59,604 INFO L478 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 [2018-11-23 12:26:59,609 INFO L478 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 [2018-11-23 12:26:59,609 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:59,614 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:59,650 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:26:59,650 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2018-11-23 12:26:59,719 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:59,735 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:26:59,885 INFO L478 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 27 treesize of output 22 [2018-11-23 12:26:59,901 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:26:59,909 INFO L478 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 22 treesize of output 14 [2018-11-23 12:26:59,909 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:26:59,929 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:00,000 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:00,000 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:79, output treesize:62 [2018-11-23 12:27:00,064 INFO L478 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 174 treesize of output 170 [2018-11-23 12:27:00,072 INFO L478 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 170 treesize of output 166 [2018-11-23 12:27:00,073 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:00,087 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:00,290 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 235 [2018-11-23 12:27:00,385 INFO L478 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 172 treesize of output 115 [2018-11-23 12:27:00,386 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-23 12:27:00,493 INFO L478 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 122 treesize of output 7 [2018-11-23 12:27:00,493 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:00,540 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:27:00,612 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-23 12:27:00,612 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:196, output treesize:90 [2018-11-23 12:27:00,628 INFO L478 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 50 treesize of output 47 [2018-11-23 12:27:00,631 INFO L478 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 [2018-11-23 12:27:00,631 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:00,656 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:00,699 INFO L478 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 85 treesize of output 82 [2018-11-23 12:27:00,710 INFO L478 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 [2018-11-23 12:27:00,711 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:00,801 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,001 INFO L478 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 81 treesize of output 78 [2018-11-23 12:27:01,008 INFO L478 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 12 treesize of output 1 [2018-11-23 12:27:01,008 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,041 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,202 INFO L478 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 66 treesize of output 63 [2018-11-23 12:27:01,206 INFO L478 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 [2018-11-23 12:27:01,207 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,237 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,244 INFO L478 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 46 treesize of output 43 [2018-11-23 12:27:01,247 INFO L478 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 [2018-11-23 12:27:01,247 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,262 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,403 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 66 [2018-11-23 12:27:01,407 INFO L478 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 51 treesize of output 39 [2018-11-23 12:27:01,407 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,470 INFO L478 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 44 treesize of output 38 [2018-11-23 12:27:01,470 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-11-23 12:27:01,500 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:27:01,581 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2018-11-23 12:27:01,581 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:136, output treesize:135 [2018-11-23 12:27:01,661 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:27:01,663 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:27:01,664 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:27:01,678 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:27:01,679 INFO L478 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 32 treesize of output 49 [2018-11-23 12:27:01,679 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,710 INFO L478 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 29 treesize of output 23 [2018-11-23 12:27:01,713 INFO L478 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 23 treesize of output 17 [2018-11-23 12:27:01,713 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,715 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,727 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:192, output treesize:27 [2018-11-23 12:27:01,802 INFO L478 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 [2018-11-23 12:27:01,804 INFO L478 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 [2018-11-23 12:27:01,804 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,807 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,817 INFO L478 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 27 treesize of output 21 [2018-11-23 12:27:01,819 INFO L478 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 21 treesize of output 12 [2018-11-23 12:27:01,819 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,824 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,829 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,829 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-11-23 12:27:01,891 INFO L478 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 [2018-11-23 12:27:01,892 INFO L478 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 [2018-11-23 12:27:01,893 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,894 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,895 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:01,895 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-11-23 12:27:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-23 12:27:01,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:27:02,169 WARN L180 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-11-23 12:27:02,280 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-11-23 12:27:06,813 WARN L180 SmtUtils]: Spent 4.53 s on a formula simplification that was a NOOP. DAG size: 109 [2018-11-23 12:27:07,907 WARN L180 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 77 [2018-11-23 12:27:09,429 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 91 [2018-11-23 12:27:10,539 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 87 [2018-11-23 12:27:10,714 WARN L180 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-23 12:27:10,726 INFO L478 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 40 treesize of output 36 [2018-11-23 12:27:10,741 INFO L478 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 36 treesize of output 32 [2018-11-23 12:27:10,741 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:10,771 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:10,940 INFO L478 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 19 treesize of output 16 [2018-11-23 12:27:10,957 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2018-11-23 12:27:10,986 INFO L478 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 20 treesize of output 8 [2018-11-23 12:27:10,986 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:11,002 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:11,018 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:11,116 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:11,129 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:11,210 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:11,221 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:11,358 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 64 [2018-11-23 12:27:11,533 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-11-23 12:27:11,543 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:27:11,543 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:27:11,544 INFO L478 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 40 treesize of output 42 [2018-11-23 12:27:11,544 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:11,553 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:27:11,553 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:27:11,554 INFO L478 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 40 treesize of output 42 [2018-11-23 12:27:11,554 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:11,567 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:27:11,567 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:27:11,568 INFO L478 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 40 treesize of output 42 [2018-11-23 12:27:11,568 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:11,596 INFO L478 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 41 treesize of output 53 [2018-11-23 12:27:11,597 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-11-23 12:27:11,962 INFO L478 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 42 treesize of output 41 [2018-11-23 12:27:11,962 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:12,352 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2018-11-23 12:27:12,358 INFO L478 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 25 treesize of output 19 [2018-11-23 12:27:12,358 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:12,466 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2018-11-23 12:27:12,467 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-11-23 12:27:12,578 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:27:13,093 INFO L478 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 35 treesize of output 29 [2018-11-23 12:27:13,098 INFO L478 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 8 treesize of output 1 [2018-11-23 12:27:13,099 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,128 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,134 INFO L478 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 35 treesize of output 29 [2018-11-23 12:27:13,137 INFO L478 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 8 treesize of output 1 [2018-11-23 12:27:13,138 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,164 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,169 INFO L478 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 35 treesize of output 29 [2018-11-23 12:27:13,173 INFO L478 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 8 treesize of output 1 [2018-11-23 12:27:13,174 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,204 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,327 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:27:13,449 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:13,482 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:13,483 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:13,496 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:27:13,496 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,502 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:27:13,626 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 6 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-11-23 12:27:13,626 INFO L202 ElimStorePlain]: Needed 31 recursive calls to eliminate 8 variables, input treesize:147, output treesize:76 [2018-11-23 12:27:13,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 12:27:13,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2018-11-23 12:27:13,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-23 12:27:13,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-23 12:27:13,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=681, Unknown=12, NotChecked=280, Total=1056 [2018-11-23 12:27:13,772 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 30 states. [2018-11-23 12:27:25,505 WARN L180 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-11-23 12:27:31,614 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)))) (and (= |c_#valid| (store .cse0 |c_dll_create_#res.base| (_ bv1 1))) (= (select .cse0 |c_dll_create_#res.base|) (_ bv0 1)) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1))))) (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)) |c_dll_create_#res.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (let ((.cse1 (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)))) (and (= |c_#valid| (store .cse1 c_dll_create_~head~0.base (_ bv1 1))) (= (_ bv0 1) (select .cse1 c_dll_create_~head~0.base)) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1))))) (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (let ((.cse2 (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1)))) (and (= (select .cse2 c_dll_create_~new_head~0.base) (_ bv0 1)) (= |c_#valid| (store .cse2 c_dll_create_~new_head~0.base (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))))) is different from true [2018-11-23 12:27:48,417 WARN L180 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-11-23 12:28:07,795 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2018-11-23 12:28:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:28:23,760 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-11-23 12:28:23,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 12:28:23,760 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 40 [2018-11-23 12:28:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:28:23,762 INFO L225 Difference]: With dead ends: 64 [2018-11-23 12:28:23,762 INFO L226 Difference]: Without dead ends: 62 [2018-11-23 12:28:23,763 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=127, Invalid=1065, Unknown=22, NotChecked=426, Total=1640 [2018-11-23 12:28:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-23 12:28:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2018-11-23 12:28:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-23 12:28:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-11-23 12:28:23,770 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 40 [2018-11-23 12:28:23,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:28:23,771 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-11-23 12:28:23,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-23 12:28:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-11-23 12:28:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-23 12:28:23,772 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:28:23,772 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2018-11-23 12:28:23,772 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:28:23,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:28:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1613207483, now seen corresponding path program 2 times [2018-11-23 12:28:23,773 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:28:23,773 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:28:23,784 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 12:28:23,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 12:28:23,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:28:23,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:28:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:28:23,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:28:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:28:24,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:28:24,087 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:28:24,094 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 12:28:25,358 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 12:28:25,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:28:25,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:28:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:28:25,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:28:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:28:25,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 12:28:25,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9, 9] total 20 [2018-11-23 12:28:25,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 12:28:25,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 12:28:25,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2018-11-23 12:28:25,865 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 20 states. [2018-11-23 12:28:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:28:26,626 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2018-11-23 12:28:26,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 12:28:26,627 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2018-11-23 12:28:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 12:28:26,628 INFO L225 Difference]: With dead ends: 85 [2018-11-23 12:28:26,628 INFO L226 Difference]: Without dead ends: 44 [2018-11-23 12:28:26,629 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2018-11-23 12:28:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-23 12:28:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-23 12:28:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 12:28:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-11-23 12:28:26,634 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 45 [2018-11-23 12:28:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 12:28:26,634 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-11-23 12:28:26,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 12:28:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-11-23 12:28:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-23 12:28:26,635 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 12:28:26,635 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-23 12:28:26,635 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 12:28:26,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:28:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2041629940, now seen corresponding path program 1 times [2018-11-23 12:28:26,635 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 12:28:26,635 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 12:28:26,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:28:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:28:26,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:28:26,784 INFO L478 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 [2018-11-23 12:28:26,784 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:26,788 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:26,788 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-23 12:28:28,808 WARN L854 $PredicateComparison]: unable to prove that (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1))) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)))) is different from true [2018-11-23 12:28:30,823 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-23 12:28:33,366 WARN L180 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-23 12:28:37,385 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-23 12:28:37,389 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:37,391 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:37,391 INFO L478 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 [2018-11-23 12:28:37,396 INFO L478 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 [2018-11-23 12:28:37,396 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:37,402 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:37,411 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. [2018-11-23 12:28:37,411 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:27 [2018-11-23 12:28:40,388 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:40,408 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:40,486 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:40,486 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:57, output treesize:63 [2018-11-23 12:28:43,788 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 33 [2018-11-23 12:28:43,800 INFO L478 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 205 treesize of output 203 [2018-11-23 12:28:43,811 INFO L478 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 203 treesize of output 201 [2018-11-23 12:28:43,812 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:43,830 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:43,924 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:43,924 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:220, output treesize:216 [2018-11-23 12:28:50,206 WARN L180 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 40 [2018-11-23 12:28:50,314 INFO L303 Elim1Store]: Index analysis took 105 ms [2018-11-23 12:28:50,314 INFO L478 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 [2018-11-23 12:28:50,344 INFO L478 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 [2018-11-23 12:28:50,344 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:50,375 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:50,512 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:50,512 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:344, output treesize:340 [2018-11-23 12:28:54,769 WARN L180 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 40 [2018-11-23 12:28:55,909 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 120 DAG size of output: 55 [2018-11-23 12:28:55,947 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:55,968 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:55,979 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:55,986 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:55,987 INFO L478 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 25 treesize of output 21 [2018-11-23 12:28:55,987 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:56,200 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:56,385 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:56,392 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:56,392 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:28:56,393 INFO L303 Elim1Store]: Index analysis took 221 ms [2018-11-23 12:28:56,395 INFO L478 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 1 case distinctions, treesize of input 176 treesize of output 204 [2018-11-23 12:28:56,985 WARN L180 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-11-23 12:28:57,003 INFO L478 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 92 treesize of output 82 [2018-11-23 12:28:57,011 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2018-11-23 12:28:57,052 INFO L478 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 72 treesize of output 71 [2018-11-23 12:28:57,052 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:57,146 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:57,231 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:57,540 INFO L478 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 71 treesize of output 57 [2018-11-23 12:28:57,553 INFO L478 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 26 treesize of output 22 [2018-11-23 12:28:57,554 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:28:57,708 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:57,749 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:28:57,750 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 51 [2018-11-23 12:28:57,750 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:57,806 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:58,043 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 100 [2018-11-23 12:28:58,048 INFO L478 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 91 treesize of output 90 [2018-11-23 12:28:58,049 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:58,183 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:58,201 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:58,202 INFO L478 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 70 treesize of output 87 [2018-11-23 12:28:58,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2018-11-23 12:28:58,207 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:58,233 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:58,315 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:58,365 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:58,407 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 115 [2018-11-23 12:28:58,413 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 79 [2018-11-23 12:28:58,413 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:58,530 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:58,543 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 77 [2018-11-23 12:28:58,543 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-11-23 12:28:58,632 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:28:58,728 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-23 12:28:58,816 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 95 [2018-11-23 12:28:58,839 INFO L478 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 73 treesize of output 83 [2018-11-23 12:28:58,839 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-11-23 12:28:59,430 INFO L478 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 72 treesize of output 67 [2018-11-23 12:28:59,430 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:59,810 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:28:59,811 INFO L478 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 55 treesize of output 59 [2018-11-23 12:28:59,816 INFO L478 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 21 treesize of output 13 [2018-11-23 12:28:59,817 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:59,832 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:28:59,845 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:28:59,846 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 64 [2018-11-23 12:28:59,853 INFO L478 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 31 treesize of output 31 [2018-11-23 12:28:59,853 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 12:28:59,877 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,236 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 85 [2018-11-23 12:29:00,241 INFO L478 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 62 treesize of output 57 [2018-11-23 12:29:00,250 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-11-23 12:29:00,250 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,273 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,331 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 12:29:00,383 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,523 INFO L478 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 88 treesize of output 82 [2018-11-23 12:29:00,528 INFO L478 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 12 treesize of output 4 [2018-11-23 12:29:00,528 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,554 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,564 INFO L478 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 81 treesize of output 73 [2018-11-23 12:29:00,571 INFO L478 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 31 treesize of output 25 [2018-11-23 12:29:00,572 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:29:00,601 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:29:00,608 INFO L478 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 78 treesize of output 72 [2018-11-23 12:29:00,612 INFO L478 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 12 treesize of output 4 [2018-11-23 12:29:00,613 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,633 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:29:00,639 INFO L478 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 58 [2018-11-23 12:29:00,644 INFO L478 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 24 treesize of output 20 [2018-11-23 12:29:00,644 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:29:00,673 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:29:00,870 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2018-11-23 12:29:01,121 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 4 xjuncts. [2018-11-23 12:29:01,121 INFO L202 ElimStorePlain]: Needed 34 recursive calls to eliminate 6 variables, input treesize:376, output treesize:330 [2018-11-23 12:30:25,479 WARN L180 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2018-11-23 12:30:25,497 INFO L478 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 113 treesize of output 109 [2018-11-23 12:30:25,507 INFO L478 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 [2018-11-23 12:30:25,507 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:25,540 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:25,672 INFO L478 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 105 treesize of output 101 [2018-11-23 12:30:25,675 INFO L478 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 [2018-11-23 12:30:25,675 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:25,709 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:25,831 INFO L478 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 88 treesize of output 84 [2018-11-23 12:30:25,833 INFO L478 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 [2018-11-23 12:30:25,833 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:25,847 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:25,963 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-2 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2018-11-23 12:30:25,963 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 9 variables, input treesize:307, output treesize:274 [2018-11-23 12:30:38,151 WARN L180 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 80 [2018-11-23 12:30:38,196 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 72 [2018-11-23 12:30:38,200 INFO L478 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 50 treesize of output 36 [2018-11-23 12:30:38,201 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,384 INFO L478 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 55 treesize of output 54 [2018-11-23 12:30:38,384 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,515 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2018-11-23 12:30:38,516 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,641 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 25 treesize of output 13 [2018-11-23 12:30:38,641 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,704 INFO L478 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 44 treesize of output 35 [2018-11-23 12:30:38,704 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,855 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 20 [2018-11-23 12:30:38,855 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,873 INFO L267 ElimStorePlain]: Start of recursive call 2: 10 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,943 INFO L478 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 1 case distinctions, treesize of input 78 treesize of output 51 [2018-11-23 12:30:38,946 INFO L478 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 42 treesize of output 35 [2018-11-23 12:30:38,947 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:38,976 INFO L478 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 35 treesize of output 31 [2018-11-23 12:30:38,977 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:39,010 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 9 [2018-11-23 12:30:39,011 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:39,032 INFO L478 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 25 treesize of output 23 [2018-11-23 12:30:39,032 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:39,046 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 17 treesize of output 4 [2018-11-23 12:30:39,047 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:39,052 INFO L267 ElimStorePlain]: Start of recursive call 9: 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:39,060 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:39,060 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 9 variables, input treesize:277, output treesize:4 [2018-11-23 12:30:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2018-11-23 12:30:41,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 12:30:42,350 WARN L180 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2018-11-23 12:30:42,626 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-23 12:30:43,246 WARN L180 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-11-23 12:30:43,780 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-23 12:30:43,850 INFO L478 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 108 treesize of output 104 [2018-11-23 12:30:43,856 INFO L478 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 104 treesize of output 100 [2018-11-23 12:30:43,856 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:43,870 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:43,925 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:43,939 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:43,976 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:43,976 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:185, output treesize:255 [2018-11-23 12:30:45,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:30:45,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_346a94d9-3424-4c08-9058-fb3001cd82e8/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:30:45,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:30:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:30:45,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:30:45,823 INFO L478 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 [2018-11-23 12:30:45,823 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:45,831 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:45,831 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-23 12:30:48,693 WARN L854 $PredicateComparison]: unable to prove that (exists ((dll_create_~head~0.base (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| dll_create_~head~0.base (_ bv1 1))) (= (_ bv0 1) (select |c_old(#valid)| dll_create_~head~0.base)))) is different from true [2018-11-23 12:30:50,708 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:50,709 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:50,709 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-11-23 12:30:50,713 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 20 [2018-11-23 12:30:50,713 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:50,719 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:50,726 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. [2018-11-23 12:30:50,727 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:24 [2018-11-23 12:30:50,949 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:50,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:51,026 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:51,026 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:53, output treesize:55 [2018-11-23 12:30:51,351 INFO L478 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 205 treesize of output 203 [2018-11-23 12:30:51,360 INFO L478 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 203 treesize of output 201 [2018-11-23 12:30:51,360 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:51,377 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:51,474 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:51,475 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:220, output treesize:216 [2018-11-23 12:30:57,697 INFO L478 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 [2018-11-23 12:30:57,712 INFO L478 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 [2018-11-23 12:30:57,712 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:57,733 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:30:57,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-23 12:30:57,861 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:344, output treesize:340 [2018-11-23 12:30:59,059 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 122 DAG size of output: 57 [2018-11-23 12:30:59,100 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,129 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,144 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,153 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,154 INFO L478 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 31 treesize of output 21 [2018-11-23 12:30:59,154 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 12:30:59,332 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,508 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,515 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:30:59,516 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:30:59,517 INFO L303 Elim1Store]: Index analysis took 223 ms [2018-11-23 12:30:59,521 INFO L478 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 1 case distinctions, treesize of input 176 treesize of output 196 [2018-11-23 12:31:00,012 WARN L180 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2018-11-23 12:31:00,024 INFO L478 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 92 treesize of output 82 [2018-11-23 12:31:00,034 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2018-11-23 12:31:00,089 INFO L478 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 72 treesize of output 71 [2018-11-23 12:31:00,089 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-23 12:31:00,210 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:31:00,328 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:31:00,601 INFO L478 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 71 treesize of output 57 [2018-11-23 12:31:00,639 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 12:31:00,693 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 12:31:00,694 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 57 [2018-11-23 12:31:00,694 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 12:31:00,762 INFO L478 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 11 [2018-11-23 12:31:00,763 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 12:31:00,806 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 12:31:00,937 INFO L478 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 71 [2018-11-23 12:31:00,943 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-11-23 12:31:01,149 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:31:01,149 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_24 input size 13 context size 13 output size 13 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:232) 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:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-11-23 12:31:01,152 INFO L168 Benchmark]: Toolchain (without parser) took 286717.89 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 238.6 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2018-11-23 12:31:01,152 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-11-23 12:31:01,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2018-11-23 12:31:01,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:31:01,153 INFO L168 Benchmark]: Boogie Preprocessor took 29.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-23 12:31:01,153 INFO L168 Benchmark]: RCFGBuilder took 513.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-11-23 12:31:01,153 INFO L168 Benchmark]: TraceAbstraction took 285765.59 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 119.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2018-11-23 12:31:01,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 383.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 513.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 285765.59 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 119.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.0 MB). Peak memory consumption was 31.0 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_24 input size 13 context size 13 output size 13 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_24 input size 13 context size 13 output size 13: 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...