./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/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 1f3e231c5b77f9ab25b28372001f508e3e47c051 .................................................................................................................................................................................................................................................................................................................................................................................................... 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_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/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 1f3e231c5b77f9ab25b28372001f508e3e47c051 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_26 input size 33 context size 33 output size 33 --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 04:15:38,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 04:15:38,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 04:15:38,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 04:15:38,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 04:15:38,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 04:15:38,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 04:15:38,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 04:15:38,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 04:15:38,536 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 04:15:38,536 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 04:15:38,537 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 04:15:38,537 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 04:15:38,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 04:15:38,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 04:15:38,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 04:15:38,539 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 04:15:38,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 04:15:38,540 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 04:15:38,541 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 04:15:38,542 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 04:15:38,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 04:15:38,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 04:15:38,543 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 04:15:38,543 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 04:15:38,544 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 04:15:38,544 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 04:15:38,545 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 04:15:38,545 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 04:15:38,545 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 04:15:38,546 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 04:15:38,546 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 04:15:38,546 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 04:15:38,546 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 04:15:38,547 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 04:15:38,547 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 04:15:38,547 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 04:15:38,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 04:15:38,557 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 04:15:38,558 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 04:15:38,558 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 04:15:38,558 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 04:15:38,558 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 04:15:38,558 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 04:15:38,559 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 04:15:38,559 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 04:15:38,559 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 04:15:38,559 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 04:15:38,559 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 04:15:38,559 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 04:15:38,560 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 04:15:38,560 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 04:15:38,560 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 04:15:38,560 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 04:15:38,560 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 04:15:38,560 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 04:15:38,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 04:15:38,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 04:15:38,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 04:15:38,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 04:15:38,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 04:15:38,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 04:15:38,562 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 04:15:38,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 04:15:38,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 04:15:38,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 04:15:38,562 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_c434960c-853b-4a76-b47a-cb8a70e18bd9/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 -> 1f3e231c5b77f9ab25b28372001f508e3e47c051 [2018-12-09 04:15:38,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 04:15:38,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 04:15:38,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 04:15:38,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 04:15:38,594 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 04:15:38,594 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-09 04:15:38,628 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/56e813501/7ece1d0eafb54e3e93bda05f7879d476/FLAG7d013d66d [2018-12-09 04:15:39,103 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 04:15:39,103 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-09 04:15:39,110 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/56e813501/7ece1d0eafb54e3e93bda05f7879d476/FLAG7d013d66d [2018-12-09 04:15:39,120 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/56e813501/7ece1d0eafb54e3e93bda05f7879d476 [2018-12-09 04:15:39,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 04:15:39,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 04:15:39,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 04:15:39,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 04:15:39,127 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 04:15:39,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dc21f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39, skipping insertion in model container [2018-12-09 04:15:39,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 04:15:39,157 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 04:15:39,306 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 04:15:39,346 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 04:15:39,373 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 04:15:39,394 INFO L195 MainTranslator]: Completed translation [2018-12-09 04:15:39,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39 WrapperNode [2018-12-09 04:15:39,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 04:15:39,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 04:15:39,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 04:15:39,395 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 04:15:39,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 04:15:39,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 04:15:39,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 04:15:39,413 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 04:15:39,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... [2018-12-09 04:15:39,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 04:15:39,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 04:15:39,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 04:15:39,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 04:15:39,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 04:15:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2018-12-09 04:15:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 04:15:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-09 04:15:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 04:15:39,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 04:15:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 04:15:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2018-12-09 04:15:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2018-12-09 04:15:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 04:15:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 04:15:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 04:15:39,671 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 04:15:39,671 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 04:15:39,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:15:39 BoogieIcfgContainer [2018-12-09 04:15:39,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 04:15:39,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 04:15:39,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 04:15:39,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 04:15:39,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:15:39" (1/3) ... [2018-12-09 04:15:39,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5805ab89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:15:39, skipping insertion in model container [2018-12-09 04:15:39,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:15:39" (2/3) ... [2018-12-09 04:15:39,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5805ab89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:15:39, skipping insertion in model container [2018-12-09 04:15:39,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:15:39" (3/3) ... [2018-12-09 04:15:39,675 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-09 04:15:39,681 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 04:15:39,685 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 04:15:39,694 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 04:15:39,711 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 04:15:39,711 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 04:15:39,711 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 04:15:39,711 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 04:15:39,711 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 04:15:39,711 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 04:15:39,711 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 04:15:39,711 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 04:15:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-12-09 04:15:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 04:15:39,725 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:15:39,726 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] [2018-12-09 04:15:39,727 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:15:39,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:15:39,730 INFO L82 PathProgramCache]: Analyzing trace with hash -800595804, now seen corresponding path program 1 times [2018-12-09 04:15:39,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 04:15:39,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:15:39,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:15:39,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:15:39,764 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 04:15:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:15:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-09 04:15:39,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 04:15:39,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 04:15:39,834 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 04:15:39,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 04:15:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 04:15:39,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 04:15:39,847 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-12-09 04:15:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:15:39,861 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2018-12-09 04:15:39,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 04:15:39,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-12-09 04:15:39,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:15:39,866 INFO L225 Difference]: With dead ends: 93 [2018-12-09 04:15:39,867 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 04:15:39,869 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 04:15:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 04:15:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 04:15:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 04:15:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-09 04:15:39,892 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2018-12-09 04:15:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:15:39,893 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-09 04:15:39,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 04:15:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-09 04:15:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 04:15:39,894 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:15:39,894 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] [2018-12-09 04:15:39,895 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:15:39,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:15:39,895 INFO L82 PathProgramCache]: Analyzing trace with hash 746795704, now seen corresponding path program 1 times [2018-12-09 04:15:39,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 04:15:39,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:15:39,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:15:39,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:15:39,896 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 04:15:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:15:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-09 04:15:39,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 04:15:39,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 04:15:39,962 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 04:15:39,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 04:15:39,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 04:15:39,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 04:15:39,963 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2018-12-09 04:15:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:15:40,004 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-12-09 04:15:40,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 04:15:40,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-09 04:15:40,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:15:40,005 INFO L225 Difference]: With dead ends: 68 [2018-12-09 04:15:40,005 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 04:15:40,006 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 [2018-12-09 04:15:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 04:15:40,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 04:15:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 04:15:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-09 04:15:40,010 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2018-12-09 04:15:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:15:40,010 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-09 04:15:40,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 04:15:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-09 04:15:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 04:15:40,011 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:15:40,011 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:15:40,011 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:15:40,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:15:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash -573414004, now seen corresponding path program 1 times [2018-12-09 04:15:40,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 04:15:40,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:15:40,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:15:40,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:15:40,013 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 04:15:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:15:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 04:15:40,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:15:40,553 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 04:15:40,554 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-12-09 04:15:40,555 INFO L205 CegarAbsIntRunner]: [0], [2], [4], [8], [11], [31], [34], [36], [43], [45], [47], [50], [54], [58], [59], [60], [61], [67], [69], [72], [76], [101], [107], [109], [110], [111], [112], [113], [114], [117], [118], [119], [120], [121], [122], [123], [124], [125] [2018-12-09 04:15:40,579 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 04:15:40,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 04:15:40,780 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 04:15:40,781 INFO L272 AbstractInterpreter]: Visited 38 different actions 71 times. Merged at 8 different actions 13 times. Never widened. Performed 755 root evaluator evaluations with a maximum evaluation depth of 3. Performed 755 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 31 variables. [2018-12-09 04:15:40,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:15:40,788 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 04:15:40,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:15:40,788 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/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 [2018-12-09 04:15:40,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:15:40,795 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 04:15:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:15:40,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:15:40,859 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 [2018-12-09 04:15:40,860 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 04:15:40,864 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:15:40,864 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-12-09 04:15:44,374 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:15:44,374 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:15:44,375 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:15:44,376 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 42 [2018-12-09 04:15:44,378 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 30 treesize of output 34 [2018-12-09 04:15:44,378 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:15:44,386 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:15:44,394 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:44,394 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:35, output treesize:35 [2018-12-09 04:15:46,472 WARN L180 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 22 [2018-12-09 04:15:48,838 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 28 [2018-12-09 04:15:48,841 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:48,843 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:48,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:48,846 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:31 [2018-12-09 04:15:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 2 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 04:15:56,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 04:15:56,672 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:56,674 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:56,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-09 04:15:56,678 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:33 [2018-12-09 04:16:02,338 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:02,341 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:02,549 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 04:16:02,550 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:383) 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) [2018-12-09 04:16:02,556 INFO L168 Benchmark]: Toolchain (without parser) took 23432.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 947.0 MB in the beginning and 905.9 MB in the end (delta: 41.1 MB). Peak memory consumption was 163.3 MB. Max. memory is 11.5 GB. [2018-12-09 04:16:02,557 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:16:02,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2018-12-09 04:16:02,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.23 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. [2018-12-09 04:16:02,559 INFO L168 Benchmark]: Boogie Preprocessor took 19.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:16:02,559 INFO L168 Benchmark]: RCFGBuilder took 238.66 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: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2018-12-09 04:16:02,559 INFO L168 Benchmark]: TraceAbstraction took 22883.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 905.9 MB in the end (delta: 164.9 MB). Peak memory consumption was 164.9 MB. Max. memory is 11.5 GB. [2018-12-09 04:16:02,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -161.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.23 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. * Boogie Preprocessor took 19.92 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. * RCFGBuilder took 238.66 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: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22883.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 905.9 MB in the end (delta: 164.9 MB). Peak memory consumption was 164.9 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 0.1.23-635dfa2 [2018-12-09 04:16:03,840 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 04:16:03,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 04:16:03,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 04:16:03,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 04:16:03,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 04:16:03,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 04:16:03,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 04:16:03,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 04:16:03,852 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 04:16:03,853 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 04:16:03,853 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 04:16:03,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 04:16:03,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 04:16:03,855 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 04:16:03,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 04:16:03,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 04:16:03,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 04:16:03,859 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 04:16:03,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 04:16:03,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 04:16:03,861 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 04:16:03,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 04:16:03,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 04:16:03,863 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 04:16:03,864 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 04:16:03,865 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 04:16:03,865 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 04:16:03,866 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 04:16:03,867 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 04:16:03,867 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 04:16:03,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 04:16:03,868 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 04:16:03,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 04:16:03,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 04:16:03,869 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 04:16:03,869 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 04:16:03,877 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 04:16:03,877 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 04:16:03,877 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 04:16:03,877 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 04:16:03,878 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 04:16:03,878 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 04:16:03,878 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 04:16:03,878 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 04:16:03,878 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 04:16:03,878 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 04:16:03,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 04:16:03,878 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 04:16:03,879 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 04:16:03,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 04:16:03,880 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 04:16:03,880 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 04:16:03,881 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 04:16:03,881 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_c434960c-853b-4a76-b47a-cb8a70e18bd9/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 -> 1f3e231c5b77f9ab25b28372001f508e3e47c051 [2018-12-09 04:16:03,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 04:16:03,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 04:16:03,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 04:16:03,908 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 04:16:03,908 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 04:16:03,908 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/../../sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-09 04:16:03,942 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/e211e761a/e7a6227de7c74989bd46a2d9d43cb54d/FLAG4120b8046 [2018-12-09 04:16:04,317 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 04:16:04,317 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/sv-benchmarks/c/list-simple/dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-09 04:16:04,323 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/e211e761a/e7a6227de7c74989bd46a2d9d43cb54d/FLAG4120b8046 [2018-12-09 04:16:04,691 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/data/e211e761a/e7a6227de7c74989bd46a2d9d43cb54d [2018-12-09 04:16:04,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 04:16:04,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 04:16:04,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 04:16:04,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 04:16:04,706 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 04:16:04,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:04,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397a44ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04, skipping insertion in model container [2018-12-09 04:16:04,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:04,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 04:16:04,733 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 04:16:04,889 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 04:16:04,897 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 04:16:04,967 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 04:16:04,993 INFO L195 MainTranslator]: Completed translation [2018-12-09 04:16:04,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04 WrapperNode [2018-12-09 04:16:04,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 04:16:04,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 04:16:04,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 04:16:04,994 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 04:16:04,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 04:16:05,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 04:16:05,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 04:16:05,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 04:16:05,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... [2018-12-09 04:16:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 04:16:05,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 04:16:05,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 04:16:05,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 04:16:05,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 04:16:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2018-12-09 04:16:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2018-12-09 04:16:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-09 04:16:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-09 04:16:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 04:16:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 04:16:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2018-12-09 04:16:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2018-12-09 04:16:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 04:16:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 04:16:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 04:16:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 04:16:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 04:16:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2018-12-09 04:16:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2018-12-09 04:16:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 04:16:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2018-12-09 04:16:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2018-12-09 04:16:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 04:16:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 04:16:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 04:16:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 04:16:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 04:16:05,508 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 04:16:05,508 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-09 04:16:05,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:16:05 BoogieIcfgContainer [2018-12-09 04:16:05,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 04:16:05,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 04:16:05,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 04:16:05,511 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 04:16:05,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:16:04" (1/3) ... [2018-12-09 04:16:05,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0d14f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:16:05, skipping insertion in model container [2018-12-09 04:16:05,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:16:04" (2/3) ... [2018-12-09 04:16:05,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0d14f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:16:05, skipping insertion in model container [2018-12-09 04:16:05,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:16:05" (3/3) ... [2018-12-09 04:16:05,512 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal_true-unreach-call_true-valid-memsafety.i [2018-12-09 04:16:05,518 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 04:16:05,522 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 04:16:05,531 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 04:16:05,546 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 04:16:05,547 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 04:16:05,547 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 04:16:05,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 04:16:05,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 04:16:05,547 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 04:16:05,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 04:16:05,547 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 04:16:05,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 04:16:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-12-09 04:16:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 04:16:05,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:16:05,560 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] [2018-12-09 04:16:05,561 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:16:05,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:16:05,565 INFO L82 PathProgramCache]: Analyzing trace with hash -800595804, now seen corresponding path program 1 times [2018-12-09 04:16:05,567 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 04:16:05,568 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 04:16:05,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:16:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:16:05,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:16:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-09 04:16:05,673 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 04:16:05,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 04:16:05,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 04:16:05,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 04:16:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 04:16:05,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 04:16:05,688 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-12-09 04:16:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:16:05,702 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2018-12-09 04:16:05,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 04:16:05,703 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-12-09 04:16:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:16:05,711 INFO L225 Difference]: With dead ends: 93 [2018-12-09 04:16:05,711 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 04:16:05,714 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 04:16:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 04:16:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 04:16:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 04:16:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-09 04:16:05,740 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2018-12-09 04:16:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:16:05,741 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-09 04:16:05,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 04:16:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-09 04:16:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 04:16:05,743 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:16:05,743 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] [2018-12-09 04:16:05,743 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:16:05,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:16:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash 746795704, now seen corresponding path program 1 times [2018-12-09 04:16:05,744 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 04:16:05,744 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 04:16:05,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:16:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:16:05,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:16:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 04:16:05,849 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 04:16:05,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 04:16:05,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 04:16:05,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 04:16:05,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 04:16:05,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 04:16:05,852 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2018-12-09 04:16:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:16:05,889 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2018-12-09 04:16:05,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 04:16:05,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-12-09 04:16:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:16:05,890 INFO L225 Difference]: With dead ends: 68 [2018-12-09 04:16:05,890 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 04:16:05,891 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 04:16:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 04:16:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 04:16:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 04:16:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-09 04:16:05,896 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2018-12-09 04:16:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:16:05,896 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-09 04:16:05,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 04:16:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-09 04:16:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 04:16:05,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:16:05,898 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:16:05,898 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:16:05,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:16:05,898 INFO L82 PathProgramCache]: Analyzing trace with hash -573414004, now seen corresponding path program 1 times [2018-12-09 04:16:05,898 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 04:16:05,898 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 04:16:05,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:16:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:16:06,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:16:06,129 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 13 treesize of output 10 [2018-12-09 04:16:06,132 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 10 treesize of output 9 [2018-12-09 04:16:06,133 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:06,135 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:06,140 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:06,141 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-09 04:16:08,289 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 65 [2018-12-09 04:16:08,291 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:08,412 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:10,959 INFO L303 Elim1Store]: Index analysis took 156 ms [2018-12-09 04:16:10,960 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 23 treesize of output 18 [2018-12-09 04:16:11,365 INFO L303 Elim1Store]: Index analysis took 403 ms [2018-12-09 04:16:11,366 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 18 treesize of output 7 [2018-12-09 04:16:11,366 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:11,446 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:13,441 INFO L303 Elim1Store]: Index analysis took 219 ms [2018-12-09 04:16:13,442 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2018-12-09 04:16:13,477 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 11 treesize of output 14 [2018-12-09 04:16:13,498 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 14 treesize of output 15 [2018-12-09 04:16:13,498 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:13,602 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:13,897 INFO L303 Elim1Store]: Index analysis took 138 ms [2018-12-09 04:16:13,897 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 26 treesize of output 27 [2018-12-09 04:16:13,910 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 [2018-12-09 04:16:13,910 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:14,010 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:14,318 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:14,354 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 32 treesize of output 30 [2018-12-09 04:16:14,362 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 27 treesize of output 26 [2018-12-09 04:16:14,387 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 26 treesize of output 26 [2018-12-09 04:16:14,387 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:14,454 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:14,770 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 26 treesize of output 22 [2018-12-09 04:16:14,800 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 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 04:16:14,800 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:14,855 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:15,278 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:15,894 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 39 treesize of output 29 [2018-12-09 04:16:15,946 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 14 treesize of output 15 [2018-12-09 04:16:15,947 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:16,135 INFO L303 Elim1Store]: Index analysis took 105 ms [2018-12-09 04:16:16,155 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 30 treesize of output 40 [2018-12-09 04:16:16,161 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 31 treesize of output 19 [2018-12-09 04:16:16,161 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:16,391 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 26 [2018-12-09 04:16:16,392 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 4 xjuncts. [2018-12-09 04:16:16,582 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-09 04:16:16,730 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 04:16:17,012 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2018-12-09 04:16:17,017 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 11 treesize of output 14 [2018-12-09 04:16:17,021 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-12-09 04:16:17,021 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,032 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,062 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 26 treesize of output 27 [2018-12-09 04:16:17,066 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 [2018-12-09 04:16:17,066 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,078 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,091 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,101 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 32 treesize of output 30 [2018-12-09 04:16:17,104 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 27 treesize of output 26 [2018-12-09 04:16:17,109 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 26 treesize of output 26 [2018-12-09 04:16:17,110 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,126 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,159 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 26 treesize of output 22 [2018-12-09 04:16:17,170 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 0 case distinctions, treesize of input 19 treesize of output 22 [2018-12-09 04:16:17,170 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,181 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,195 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,258 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 5 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 04:16:17,258 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 6 variables, input treesize:119, output treesize:171 [2018-12-09 04:16:17,464 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 33 [2018-12-09 04:16:17,469 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 12 [2018-12-09 04:16:17,470 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,485 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 3 [2018-12-09 04:16:17,486 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,492 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,517 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 49 treesize of output 37 [2018-12-09 04:16:17,520 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2018-12-09 04:16:17,521 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,538 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 12 [2018-12-09 04:16:17,539 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,554 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2018-12-09 04:16:17,554 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,559 INFO L267 ElimStorePlain]: Start of recursive call 5: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,563 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,564 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 3 variables, input treesize:90, output treesize:16 [2018-12-09 04:16:17,590 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 [2018-12-09 04:16:17,592 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 [2018-12-09 04:16:17,593 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,594 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,598 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:17,598 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:9 [2018-12-09 04:16:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-09 04:16:17,627 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 04:16:17,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 04:16:17,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-09 04:16:17,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 04:16:17,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 04:16:17,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-12-09 04:16:17,631 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2018-12-09 04:16:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:16:21,985 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-09 04:16:21,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 04:16:21,986 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2018-12-09 04:16:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:16:21,987 INFO L225 Difference]: With dead ends: 54 [2018-12-09 04:16:21,987 INFO L226 Difference]: Without dead ends: 52 [2018-12-09 04:16:21,987 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2018-12-09 04:16:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-09 04:16:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2018-12-09 04:16:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 04:16:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-12-09 04:16:21,991 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 46 [2018-12-09 04:16:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:16:21,991 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-12-09 04:16:21,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 04:16:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-12-09 04:16:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 04:16:21,992 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:16:21,992 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:16:21,992 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:16:21,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:16:21,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1201593358, now seen corresponding path program 1 times [2018-12-09 04:16:21,993 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 04:16:21,993 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c434960c-853b-4a76-b47a-cb8a70e18bd9/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 04:16:22,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:16:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:16:22,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:16:22,496 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 [2018-12-09 04:16:22,497 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,501 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,501 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-09 04:16:22,598 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 13 treesize of output 10 [2018-12-09 04:16:22,600 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 10 treesize of output 9 [2018-12-09 04:16:22,600 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,602 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,610 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,610 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-12-09 04:16:22,682 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 23 treesize of output 18 [2018-12-09 04:16:22,687 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:22,690 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 18 treesize of output 12 [2018-12-09 04:16:22,690 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,697 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,723 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 [2018-12-09 04:16:22,725 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 [2018-12-09 04:16:22,726 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,728 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,744 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,744 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:62, output treesize:43 [2018-12-09 04:16:22,801 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:22,816 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 21 treesize of output 22 [2018-12-09 04:16:22,820 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 10 treesize of output 9 [2018-12-09 04:16:22,820 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,833 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,870 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:22,881 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 27 treesize of output 38 [2018-12-09 04:16:22,885 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 20 treesize of output 19 [2018-12-09 04:16:22,885 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,893 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:22,916 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 1 xjuncts. [2018-12-09 04:16:22,916 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:72, output treesize:55 [2018-12-09 04:16:23,577 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:23,602 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:23,779 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:23,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 67 [2018-12-09 04:16:23,824 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 11 [2018-12-09 04:16:23,824 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:23,880 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:23,925 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 64 [2018-12-09 04:16:23,934 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:23,941 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 32 treesize of output 49 [2018-12-09 04:16:23,941 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:23,962 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:23,975 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,030 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:24,048 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 104 [2018-12-09 04:16:24,057 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 0 case distinctions, treesize of input 31 treesize of output 32 [2018-12-09 04:16:24,058 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,102 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:24,117 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2018-12-09 04:16:24,123 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:24,123 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 97 [2018-12-09 04:16:24,124 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,153 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,183 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,217 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:24,217 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:163, output treesize:82 [2018-12-09 04:16:24,434 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:24,435 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:24,437 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:16:24,438 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 33 treesize of output 52 [2018-12-09 04:16:24,443 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 32 treesize of output 46 [2018-12-09 04:16:24,443 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,458 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:16:24,499 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. [2018-12-09 04:16:24,499 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:86, output treesize:85 [2018-12-09 04:16:24,942 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:25,012 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:25,231 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:25,261 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:25,418 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. [2018-12-09 04:16:25,418 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:110, output treesize:84 [2018-12-09 04:16:27,932 WARN L180 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 45 [2018-12-09 04:16:30,683 WARN L180 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-09 04:16:33,581 WARN L180 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 49 [2018-12-09 04:16:33,588 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:38,962 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:48,256 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:16:49,524 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:00,195 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:01,243 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:09,623 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:10,776 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:16,975 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:22,868 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:30,841 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-2 vars, End of recursive call: 10 dim-0 vars, and 1 xjuncts. [2018-12-09 04:17:30,841 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:3009, output treesize:10942 [2018-12-09 04:17:59,580 WARN L180 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 95 [2018-12-09 04:22:07,961 WARN L180 SmtUtils]: Spent 4.14 m on a formula simplification. DAG size of input: 754 DAG size of output: 133 [2018-12-09 04:22:09,978 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:22:10,897 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:22:12,046 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:22:14,055 WARN L670 Elim1Store]: solver failed to check if following equality is implied: (= (select |v_old(#valid)_AFTER_CALL_22| (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |main_~#s~0.base|) |main_~#s~0.offset|)) (select |v_old(#valid)_AFTER_CALL_22| dll_circular_append_~new_last~0.base)) [2018-12-09 04:22:14,055 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:22:14,056 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:22:14,057 INFO L303 Elim1Store]: Index analysis took 6094 ms [2018-12-09 04:22:14,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 61 [2018-12-09 04:22:14,058 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 04:22:39,817 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:22:40,300 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:22:49,153 INFO L303 Elim1Store]: Index analysis took 11201 ms [2018-12-09 04:22:49,154 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 2900 treesize of output 2990 [2018-12-09 04:22:51,977 WARN L180 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 109 [2018-12-09 04:22:53,056 INFO L303 Elim1Store]: Index analysis took 1078 ms [2018-12-09 04:22:53,056 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 14 treesize of output 17 [2018-12-09 04:22:56,400 INFO L303 Elim1Store]: Index analysis took 3342 ms [2018-12-09 04:22:56,401 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 17 treesize of output 19 [2018-12-09 04:23:05,664 INFO L303 Elim1Store]: Index analysis took 9262 ms [2018-12-09 04:23:05,665 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 19 treesize of output 22 [2018-12-09 04:23:05,665 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 04:23:15,990 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:23:25,647 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:23:49,037 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:23:49,427 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:23:49,747 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:23:49,748 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:23:58,189 INFO L303 Elim1Store]: Index analysis took 9952 ms [2018-12-09 04:23:58,190 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 2681 treesize of output 2848 [2018-12-09 04:24:02,031 WARN L180 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2018-12-09 04:24:02,613 INFO L303 Elim1Store]: Index analysis took 581 ms [2018-12-09 04:24:02,614 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 64 treesize of output 63 [2018-12-09 04:24:02,614 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-09 04:24:17,294 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:24:17,696 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:24:18,086 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:24:21,399 INFO L303 Elim1Store]: Index analysis took 4551 ms [2018-12-09 04:24:21,400 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2549 treesize of output 3692 [2018-12-09 04:24:26,013 INFO L303 Elim1Store]: Index analysis took 4611 ms [2018-12-09 04:24:26,013 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-12-09 04:24:29,654 INFO L303 Elim1Store]: Index analysis took 3639 ms [2018-12-09 04:24:29,655 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2018-12-09 04:24:29,655 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-09 04:24:31,986 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:24:38,754 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:24:38,919 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:24:39,062 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:24:43,658 INFO L303 Elim1Store]: Index analysis took 5382 ms [2018-12-09 04:24:43,659 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 3041 treesize of output 3160 [2018-12-09 04:24:44,225 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:24:44,855 INFO L303 Elim1Store]: Index analysis took 1195 ms [2018-12-09 04:24:44,856 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 1938 treesize of output 972 [2018-12-09 04:24:44,856 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-09 04:24:48,484 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:24:51,753 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:24:54,293 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:24:57,327 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:25:07,852 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:08,021 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:08,022 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:25:08,145 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:08,147 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:25:09,098 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:15,760 INFO L303 Elim1Store]: Index analysis took 8777 ms [2018-12-09 04:25:15,761 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 5522 treesize of output 2197 [2018-12-09 04:25:32,503 WARN L180 SmtUtils]: Spent 16.74 s on a formula simplification. DAG size of input: 135 DAG size of output: 97 [2018-12-09 04:25:32,693 INFO L303 Elim1Store]: Index analysis took 189 ms [2018-12-09 04:25:32,694 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 14 treesize of output 17 [2018-12-09 04:25:33,048 INFO L303 Elim1Store]: Index analysis took 353 ms [2018-12-09 04:25:33,049 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 17 treesize of output 19 [2018-12-09 04:25:34,241 INFO L303 Elim1Store]: Index analysis took 1191 ms [2018-12-09 04:25:34,242 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 19 treesize of output 22 [2018-12-09 04:25:34,242 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-09 04:25:35,241 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:25:35,911 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 04:25:38,685 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:38,758 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:38,793 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:38,794 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:25:39,015 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:41,049 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:41,648 INFO L303 Elim1Store]: Index analysis took 3113 ms [2018-12-09 04:25:41,649 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 2139 treesize of output 1588 [2018-12-09 04:25:55,146 WARN L180 SmtUtils]: Spent 13.49 s on a formula simplification. DAG size of input: 168 DAG size of output: 101 [2018-12-09 04:25:55,294 INFO L303 Elim1Store]: Index analysis took 147 ms [2018-12-09 04:25:55,345 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 2 case distinctions, treesize of input 28 treesize of output 43 [2018-12-09 04:25:55,345 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-12-09 04:25:58,389 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:58,449 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:58,449 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:25:58,472 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:58,879 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:59,301 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:59,383 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:25:59,967 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:00,021 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:01,396 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:26:01,397 INFO L303 Elim1Store]: Index analysis took 3154 ms [2018-12-09 04:26:01,398 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1401 treesize of output 1416 [2018-12-09 04:26:01,741 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:01,785 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:02,781 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:26:02,784 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:26:03,091 INFO L303 Elim1Store]: Index analysis took 1690 ms [2018-12-09 04:26:03,142 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 271 treesize of output 183 [2018-12-09 04:26:03,144 INFO L267 ElimStorePlain]: Start of recursive call 21: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2018-12-09 04:26:06,725 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:06,766 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:06,821 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:06,973 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:07,272 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 04:26:07,273 INFO L303 Elim1Store]: Index analysis took 643 ms [2018-12-09 04:26:07,274 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 1408 treesize of output 1186 [2018-12-09 04:26:07,349 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 5 treesize of output 1 [2018-12-09 04:26:07,349 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-09 04:26:08,501 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:26:08,501 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:26:08,502 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 04:26:08,504 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1034 treesize of output 1040 [2018-12-09 04:26:08,770 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 04:26:08,771 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_26 input size 33 context size 33 output size 33 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.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) [2018-12-09 04:26:08,776 INFO L168 Benchmark]: Toolchain (without parser) took 604078.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Free memory was 938.0 MB in the beginning and 856.5 MB in the end (delta: 81.6 MB). Peak memory consumption was 322.1 MB. Max. memory is 11.5 GB. [2018-12-09 04:26:08,777 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:26:08,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2018-12-09 04:26:08,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:26:08,778 INFO L168 Benchmark]: Boogie Preprocessor took 22.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-12-09 04:26:08,778 INFO L168 Benchmark]: RCFGBuilder took 473.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. [2018-12-09 04:26:08,779 INFO L168 Benchmark]: TraceAbstraction took 603266.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 856.5 MB in the end (delta: 225.4 MB). Peak memory consumption was 316.5 MB. Max. memory is 11.5 GB. [2018-12-09 04:26:08,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.64 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 22.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 473.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 603266.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 856.5 MB in the end (delta: 225.4 MB). Peak memory consumption was 316.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_26 input size 33 context size 33 output size 33 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_26 input size 33 context size 33 output size 33: 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...