./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 09:33:20,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 09:33:20,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 09:33:20,403 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 09:33:20,404 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 09:33:20,404 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 09:33:20,405 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 09:33:20,405 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 09:33:20,406 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 09:33:20,407 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 09:33:20,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 09:33:20,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 09:33:20,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 09:33:20,408 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 09:33:20,409 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 09:33:20,409 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 09:33:20,409 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 09:33:20,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 09:33:20,411 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 09:33:20,412 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 09:33:20,412 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 09:33:20,413 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 09:33:20,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 09:33:20,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 09:33:20,414 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 09:33:20,415 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 09:33:20,415 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 09:33:20,416 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 09:33:20,416 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 09:33:20,417 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 09:33:20,417 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 09:33:20,417 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 09:33:20,417 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 09:33:20,417 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 09:33:20,418 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 09:33:20,418 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 09:33:20,418 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 09:33:20,426 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 09:33:20,426 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 09:33:20,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 09:33:20,426 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 09:33:20,427 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 09:33:20,427 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 09:33:20,428 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 09:33:20,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 09:33:20,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 09:33:20,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 09:33:20,429 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 09:33:20,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 09:33:20,430 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 09:33:20,430 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_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 -> 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 [2018-12-02 09:33:20,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 09:33:20,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 09:33:20,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 09:33:20,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 09:33:20,461 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 09:33:20,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-12-02 09:33:20,508 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/3af67d699/6b98a9641e96417d999b429216ea759a/FLAGadeb13878 [2018-12-02 09:33:20,841 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 09:33:20,842 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-12-02 09:33:20,848 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/3af67d699/6b98a9641e96417d999b429216ea759a/FLAGadeb13878 [2018-12-02 09:33:21,268 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/3af67d699/6b98a9641e96417d999b429216ea759a [2018-12-02 09:33:21,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 09:33:21,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 09:33:21,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 09:33:21,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 09:33:21,274 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 09:33:21,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee6021e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21, skipping insertion in model container [2018-12-02 09:33:21,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 09:33:21,298 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 09:33:21,439 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:33:21,445 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 09:33:21,502 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:33:21,526 INFO L195 MainTranslator]: Completed translation [2018-12-02 09:33:21,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21 WrapperNode [2018-12-02 09:33:21,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 09:33:21,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 09:33:21,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 09:33:21,527 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 09:33:21,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 09:33:21,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 09:33:21,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 09:33:21,544 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 09:33:21,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... [2018-12-02 09:33:21,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 09:33:21,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 09:33:21,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 09:33:21,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 09:33:21,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 [2018-12-02 09:33:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2018-12-02 09:33:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2018-12-02 09:33:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 09:33:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 09:33:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 09:33:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 09:33:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 09:33:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 09:33:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2018-12-02 09:33:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 09:33:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 09:33:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 09:33:21,753 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 09:33:21,754 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 09:33:21,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:21 BoogieIcfgContainer [2018-12-02 09:33:21,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 09:33:21,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 09:33:21,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 09:33:21,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 09:33:21,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:33:21" (1/3) ... [2018-12-02 09:33:21,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c8338f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:33:21, skipping insertion in model container [2018-12-02 09:33:21,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:21" (2/3) ... [2018-12-02 09:33:21,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c8338f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:33:21, skipping insertion in model container [2018-12-02 09:33:21,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:21" (3/3) ... [2018-12-02 09:33:21,759 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search_false-unreach-call_false-valid-memcleanup.i [2018-12-02 09:33:21,765 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 09:33:21,769 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 09:33:21,777 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 09:33:21,794 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 09:33:21,794 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 09:33:21,794 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 09:33:21,794 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 09:33:21,794 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 09:33:21,794 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 09:33:21,794 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 09:33:21,794 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 09:33:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-12-02 09:33:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 09:33:21,807 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:21,808 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:21,809 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:21,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash -658334123, now seen corresponding path program 1 times [2018-12-02 09:33:21,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:21,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:21,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:21,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:21,841 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:21,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:21,973 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 09:33:21,974 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2018-12-02 09:33:21,975 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [5], [9], [10], [14], [16], [18], [20], [22], [24], [40], [43], [45], [51], [69], [71], [72], [73], [74], [75], [77], [78], [79], [80], [81], [82], [83], [84], [85], [86], [87] [2018-12-02 09:33:21,996 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 09:33:21,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 09:33:22,104 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-02 09:33:22,105 INFO L272 AbstractInterpreter]: Visited 25 different actions 37 times. Never merged. Never widened. Performed 348 root evaluator evaluations with a maximum evaluation depth of 3. Performed 348 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 30 variables. [2018-12-02 09:33:22,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:22,111 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-02 09:33:22,187 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 86.51% of their original sizes. [2018-12-02 09:33:22,188 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-02 09:33:22,254 INFO L418 sIntCurrentIteration]: We unified 44 AI predicates to 44 [2018-12-02 09:33:22,255 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-02 09:33:22,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-02 09:33:22,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-12-02 09:33:22,255 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:22,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 09:33:22,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 09:33:22,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-12-02 09:33:22,262 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 13 states. [2018-12-02 09:33:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:22,761 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2018-12-02 09:33:22,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-02 09:33:22,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2018-12-02 09:33:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:22,769 INFO L225 Difference]: With dead ends: 93 [2018-12-02 09:33:22,769 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 09:33:22,772 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2018-12-02 09:33:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 09:33:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-12-02 09:33:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 09:33:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-12-02 09:33:22,800 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2018-12-02 09:33:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:22,800 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-12-02 09:33:22,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 09:33:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-12-02 09:33:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 09:33:22,801 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:22,801 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:22,802 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:22,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1948127278, now seen corresponding path program 1 times [2018-12-02 09:33:22,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:22,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:22,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:22,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:22,803 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:22,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:22,854 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 09:33:22,854 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2018-12-02 09:33:22,854 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [5], [9], [10], [14], [16], [18], [20], [22], [24], [40], [43], [45], [51], [56], [59], [65], [71], [72], [73], [74], [75], [77], [78], [79], [80], [81], [82], [83], [84], [85], [86], [87] [2018-12-02 09:33:22,856 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 09:33:22,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 09:33:22,900 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 09:33:22,900 INFO L272 AbstractInterpreter]: Visited 35 different actions 47 times. Never merged. Never widened. Performed 427 root evaluator evaluations with a maximum evaluation depth of 4. Performed 427 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 30 variables. [2018-12-02 09:33:22,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:22,903 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 09:33:22,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:22,904 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 [2018-12-02 09:33:22,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:22,912 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 09:33:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:22,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 09:33:22,981 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:23,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 09:33:23,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2018-12-02 09:33:23,040 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 09:33:23,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 09:33:23,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 09:33:23,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-02 09:33:23,042 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2018-12-02 09:33:23,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:23,120 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2018-12-02 09:33:23,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 09:33:23,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-12-02 09:33:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:23,121 INFO L225 Difference]: With dead ends: 80 [2018-12-02 09:33:23,121 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 09:33:23,122 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 91 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-12-02 09:33:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 09:33:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-12-02 09:33:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-02 09:33:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2018-12-02 09:33:23,126 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 47 [2018-12-02 09:33:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:23,126 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2018-12-02 09:33:23,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 09:33:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2018-12-02 09:33:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 09:33:23,127 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:23,127 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-12-02 09:33:23,127 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:23,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash 369290796, now seen corresponding path program 1 times [2018-12-02 09:33:23,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:23,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:23,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:23,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:23,129 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-02 09:33:23,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:23,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-02 09:33:23,266 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:23,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 09:33:23,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 09:33:23,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-02 09:33:23,266 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 10 states. [2018-12-02 09:33:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:23,467 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2018-12-02 09:33:23,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-02 09:33:23,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-12-02 09:33:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:23,469 INFO L225 Difference]: With dead ends: 64 [2018-12-02 09:33:23,469 INFO L226 Difference]: Without dead ends: 55 [2018-12-02 09:33:23,469 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-12-02 09:33:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-02 09:33:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2018-12-02 09:33:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-02 09:33:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-12-02 09:33:23,474 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-12-02 09:33:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:23,474 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-12-02 09:33:23,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 09:33:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-12-02 09:33:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 09:33:23,475 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:23,475 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-12-02 09:33:23,475 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:23,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:23,476 INFO L82 PathProgramCache]: Analyzing trace with hash -23736214, now seen corresponding path program 1 times [2018-12-02 09:33:23,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:23,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:23,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:23,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:23,477 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-02 09:33:23,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:23,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 09:33:23,538 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 09:33:23,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 09:33:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 09:33:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-02 09:33:23,539 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 7 states. [2018-12-02 09:33:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:23,605 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-12-02 09:33:23,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 09:33:23,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-12-02 09:33:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:23,606 INFO L225 Difference]: With dead ends: 63 [2018-12-02 09:33:23,606 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 09:33:23,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-12-02 09:33:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 09:33:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-12-02 09:33:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-02 09:33:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-12-02 09:33:23,610 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2018-12-02 09:33:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:23,610 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-12-02 09:33:23,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 09:33:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-12-02 09:33:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-02 09:33:23,611 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:23,611 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:23,611 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:23,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:23,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1979191460, now seen corresponding path program 1 times [2018-12-02 09:33:23,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 09:33:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:23,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 09:33:23,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 09:33:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 09:33:23,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:23,967 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 09:33:23,967 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-12-02 09:33:23,967 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [9], [10], [14], [16], [18], [20], [22], [24], [40], [43], [45], [51], [56], [59], [65], [67], [71], [72], [73], [74], [75], [77], [78], [79], [80], [81], [82], [83], [84], [85], [86], [87] [2018-12-02 09:33:23,968 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 09:33:23,968 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 09:33:24,002 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 09:33:24,002 INFO L272 AbstractInterpreter]: Visited 37 different actions 55 times. Merged at 1 different actions 3 times. Never widened. Performed 528 root evaluator evaluations with a maximum evaluation depth of 4. Performed 528 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 4 fixpoints after 2 different actions. Largest state had 30 variables. [2018-12-02 09:33:24,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:24,004 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 09:33:24,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:24,004 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:33:24,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:24,011 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 09:33:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:24,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:24,063 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 [2018-12-02 09:33:24,064 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,071 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,071 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:33:24,077 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 22 treesize of output 19 [2018-12-02 09:33:24,079 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 19 treesize of output 22 [2018-12-02 09:33:24,081 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:24,082 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:24,082 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,087 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,088 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,091 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,091 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:31, output treesize:16 [2018-12-02 09:33:24,151 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 [2018-12-02 09:33:24,153 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 [2018-12-02 09:33:24,153 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,156 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,165 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 [2018-12-02 09:33:24,167 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 [2018-12-02 09:33:24,167 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,169 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:24,175 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. [2018-12-02 09:33:24,175 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:57, output treesize:49 [2018-12-02 09:33:25,017 WARN L180 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-02 09:33:25,579 WARN L180 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-02 09:33:25,585 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:25,586 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:25,586 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-12-02 09:33:25,586 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,599 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 36 treesize of output 43 [2018-12-02 09:33:25,601 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 19 treesize of output 22 [2018-12-02 09:33:25,604 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:25,605 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:25,605 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,607 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,611 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,615 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,616 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:64, output treesize:36 [2018-12-02 09:33:25,812 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 09:33:25,812 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:25,813 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:56, output treesize:1 [2018-12-02 09:33:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:25,819 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:26,124 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:26,126 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:26,130 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. [2018-12-02 09:33:26,130 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:25 [2018-12-02 09:33:26,269 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:26,271 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:26,477 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:33:26,478 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:264) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-02 09:33:26,482 INFO L168 Benchmark]: Toolchain (without parser) took 5211.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.1 MB). Free memory was 947.0 MB in the beginning and 809.9 MB in the end (delta: 137.1 MB). Peak memory consumption was 345.2 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:26,483 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-12-02 09:33:26,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:26,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:26,486 INFO L168 Benchmark]: Boogie Preprocessor took 16.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 09:33:26,487 INFO L168 Benchmark]: RCFGBuilder took 193.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:26,487 INFO L168 Benchmark]: TraceAbstraction took 4727.25 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.6 MB). Free memory was 1.1 GB in the beginning and 809.9 MB in the end (delta: 265.7 MB). Peak memory consumption was 354.3 MB. Max. memory is 11.5 GB. [2018-12-02 09:33:26,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -156.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4727.25 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 88.6 MB). Free memory was 1.1 GB in the beginning and 809.9 MB in the end (delta: 265.7 MB). Peak memory consumption was 354.3 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 [2018-12-02 09:33:27,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 09:33:27,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 09:33:27,819 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 09:33:27,819 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 09:33:27,820 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 09:33:27,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 09:33:27,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 09:33:27,822 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 09:33:27,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 09:33:27,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 09:33:27,823 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 09:33:27,823 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 09:33:27,824 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 09:33:27,824 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 09:33:27,824 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 09:33:27,825 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 09:33:27,826 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 09:33:27,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 09:33:27,827 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 09:33:27,828 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 09:33:27,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 09:33:27,829 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 09:33:27,829 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 09:33:27,829 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 09:33:27,830 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 09:33:27,830 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 09:33:27,831 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 09:33:27,831 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 09:33:27,832 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 09:33:27,832 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 09:33:27,832 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 09:33:27,832 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 09:33:27,832 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 09:33:27,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 09:33:27,833 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 09:33:27,833 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 09:33:27,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 09:33:27,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 09:33:27,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 09:33:27,841 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 09:33:27,841 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 09:33:27,841 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 09:33:27,841 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 09:33:27,841 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 09:33:27,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 09:33:27,842 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 09:33:27,843 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 09:33:27,843 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 09:33:27,843 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 09:33:27,844 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 09:33:27,844 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 09:33:27,844 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 09:33:27,844 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 09:33:27,844 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 09:33:27,844 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_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 -> 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 [2018-12-02 09:33:27,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 09:33:27,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 09:33:27,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 09:33:27,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 09:33:27,871 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 09:33:27,871 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-12-02 09:33:27,907 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/bb3c613a2/ae25ec794b73454f81c3b16cd9dbe999/FLAGd4ba263a7 [2018-12-02 09:33:28,330 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 09:33:28,330 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-12-02 09:33:28,336 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/bb3c613a2/ae25ec794b73454f81c3b16cd9dbe999/FLAGd4ba263a7 [2018-12-02 09:33:28,344 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/data/bb3c613a2/ae25ec794b73454f81c3b16cd9dbe999 [2018-12-02 09:33:28,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 09:33:28,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 09:33:28,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 09:33:28,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 09:33:28,349 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 09:33:28,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3516233b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28, skipping insertion in model container [2018-12-02 09:33:28,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 09:33:28,373 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 09:33:28,523 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:33:28,532 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 09:33:28,557 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 09:33:28,617 INFO L195 MainTranslator]: Completed translation [2018-12-02 09:33:28,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28 WrapperNode [2018-12-02 09:33:28,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 09:33:28,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 09:33:28,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 09:33:28,618 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 09:33:28,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 09:33:28,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 09:33:28,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 09:33:28,637 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 09:33:28,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... [2018-12-02 09:33:28,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 09:33:28,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 09:33:28,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 09:33:28,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 09:33:28,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 [2018-12-02 09:33:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2018-12-02 09:33:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2018-12-02 09:33:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 09:33:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 09:33:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 09:33:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 09:33:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 09:33:28,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 09:33:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2018-12-02 09:33:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 09:33:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 09:33:28,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 09:33:28,850 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 09:33:28,851 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-02 09:33:28,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:28 BoogieIcfgContainer [2018-12-02 09:33:28,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 09:33:28,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 09:33:28,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 09:33:28,853 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 09:33:28,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:33:28" (1/3) ... [2018-12-02 09:33:28,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25205bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:33:28, skipping insertion in model container [2018-12-02 09:33:28,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:33:28" (2/3) ... [2018-12-02 09:33:28,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25205bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:33:28, skipping insertion in model container [2018-12-02 09:33:28,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:28" (3/3) ... [2018-12-02 09:33:28,856 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search_false-unreach-call_false-valid-memcleanup.i [2018-12-02 09:33:28,863 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 09:33:28,868 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 09:33:28,879 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 09:33:28,896 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 09:33:28,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 09:33:28,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 09:33:28,897 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 09:33:28,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 09:33:28,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 09:33:28,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 09:33:28,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 09:33:28,897 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 09:33:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-12-02 09:33:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 09:33:28,910 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:28,911 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:28,912 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:28,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:28,915 INFO L82 PathProgramCache]: Analyzing trace with hash -658334123, now seen corresponding path program 1 times [2018-12-02 09:33:28,918 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:28,918 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 [2018-12-02 09:33:28,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:29,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-12-02 09:33:29,042 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 09:33:29,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:29,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 09:33:29,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 09:33:29,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 09:33:29,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 09:33:29,056 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-12-02 09:33:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:29,070 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2018-12-02 09:33:29,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 09:33:29,071 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2018-12-02 09:33:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:29,076 INFO L225 Difference]: With dead ends: 58 [2018-12-02 09:33:29,076 INFO L226 Difference]: Without dead ends: 33 [2018-12-02 09:33:29,079 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 09:33:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-02 09:33:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-02 09:33:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-02 09:33:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-12-02 09:33:29,105 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 45 [2018-12-02 09:33:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:29,106 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2018-12-02 09:33:29,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 09:33:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2018-12-02 09:33:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 09:33:29,108 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:29,108 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:29,108 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:29,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1948127278, now seen corresponding path program 1 times [2018-12-02 09:33:29,110 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:29,110 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 [2018-12-02 09:33:29,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:29,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 09:33:29,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:29,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:29,285 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:33:29,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:29,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 09:33:29,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:29,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 09:33:29,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 7 [2018-12-02 09:33:29,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 09:33:29,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 09:33:29,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-02 09:33:29,430 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2018-12-02 09:33:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:29,682 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2018-12-02 09:33:29,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 09:33:29,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-12-02 09:33:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:29,684 INFO L225 Difference]: With dead ends: 73 [2018-12-02 09:33:29,684 INFO L226 Difference]: Without dead ends: 49 [2018-12-02 09:33:29,685 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-12-02 09:33:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-12-02 09:33:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-12-02 09:33:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 09:33:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-12-02 09:33:29,692 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 47 [2018-12-02 09:33:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:29,693 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-12-02 09:33:29,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 09:33:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-12-02 09:33:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 09:33:29,694 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:29,694 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-12-02 09:33:29,695 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:29,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:29,695 INFO L82 PathProgramCache]: Analyzing trace with hash 369290796, now seen corresponding path program 1 times [2018-12-02 09:33:29,695 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:29,695 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/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 [2018-12-02 09:33:29,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:29,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:29,838 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 22 treesize of output 19 [2018-12-02 09:33:29,840 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 19 treesize of output 22 [2018-12-02 09:33:29,845 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:29,847 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:29,848 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:29,854 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:29,856 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:29,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:29,860 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:26, output treesize:11 [2018-12-02 09:33:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-02 09:33:29,954 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 09:33:29,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:29,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 09:33:29,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 09:33:29,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 09:33:29,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-12-02 09:33:29,957 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2018-12-02 09:33:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:30,224 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-02 09:33:30,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 09:33:30,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2018-12-02 09:33:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:30,226 INFO L225 Difference]: With dead ends: 54 [2018-12-02 09:33:30,226 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 09:33:30,227 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-12-02 09:33:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 09:33:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-12-02 09:33:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 09:33:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-02 09:33:30,232 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 47 [2018-12-02 09:33:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:30,232 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-02 09:33:30,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 09:33:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-02 09:33:30,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-02 09:33:30,233 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:30,233 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-12-02 09:33:30,233 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:30,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:30,233 INFO L82 PathProgramCache]: Analyzing trace with hash -23736214, now seen corresponding path program 1 times [2018-12-02 09:33:30,233 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:30,233 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 09:33:30,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:30,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-02 09:33:30,322 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 09:33:30,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 09:33:30,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 09:33:30,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 09:33:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 09:33:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 09:33:30,324 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 6 states. [2018-12-02 09:33:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:30,447 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-02 09:33:30,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 09:33:30,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-12-02 09:33:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:30,449 INFO L225 Difference]: With dead ends: 54 [2018-12-02 09:33:30,449 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 09:33:30,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 09:33:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 09:33:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-12-02 09:33:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 09:33:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-02 09:33:30,453 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 47 [2018-12-02 09:33:30,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:30,454 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-02 09:33:30,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 09:33:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-02 09:33:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-02 09:33:30,454 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:30,454 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:30,454 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:30,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1979191460, now seen corresponding path program 1 times [2018-12-02 09:33:30,455 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:30,455 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 09:33:30,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:30,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:30,594 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 [2018-12-02 09:33:30,594 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,600 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,600 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:33:30,614 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 22 treesize of output 19 [2018-12-02 09:33:30,617 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 19 treesize of output 22 [2018-12-02 09:33:30,621 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:30,623 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:30,624 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,628 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,630 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,636 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,636 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:33, output treesize:18 [2018-12-02 09:33:30,746 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 [2018-12-02 09:33:30,751 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 [2018-12-02 09:33:30,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,759 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,817 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 [2018-12-02 09:33:30,822 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 [2018-12-02 09:33:30,822 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,828 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:30,855 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. [2018-12-02 09:33:30,855 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:57, output treesize:49 [2018-12-02 09:33:32,926 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 32 [2018-12-02 09:33:34,991 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 32 [2018-12-02 09:33:35,002 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:35,004 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:35,005 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 10 [2018-12-02 09:33:35,005 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,047 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 38 treesize of output 45 [2018-12-02 09:33:35,050 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 19 treesize of output 22 [2018-12-02 09:33:35,054 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:35,056 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:35,057 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,062 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,069 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,080 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,080 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:68, output treesize:38 [2018-12-02 09:33:35,477 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 09:33:35,478 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:35,480 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:1 [2018-12-02 09:33:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:35,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:36,057 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-02 09:33:36,310 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-12-02 09:33:36,448 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-12-02 09:33:36,454 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:36,458 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:36,467 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. [2018-12-02 09:33:36,467 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:28 [2018-12-02 09:33:36,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:36,626 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:33:36,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:36,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:36,683 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 [2018-12-02 09:33:36,683 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,690 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,690 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:33:36,696 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 22 treesize of output 19 [2018-12-02 09:33:36,699 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 19 treesize of output 22 [2018-12-02 09:33:36,703 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:36,705 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:36,706 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,710 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,712 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,720 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,720 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:33, output treesize:18 [2018-12-02 09:33:36,747 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 [2018-12-02 09:33:36,751 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 [2018-12-02 09:33:36,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,757 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,795 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 [2018-12-02 09:33:36,799 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 [2018-12-02 09:33:36,799 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,805 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,827 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. [2018-12-02 09:33:36,827 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:57, output treesize:49 [2018-12-02 09:33:36,835 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:36,837 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:36,838 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-12-02 09:33:36,838 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,868 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 42 treesize of output 49 [2018-12-02 09:33:36,872 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 19 treesize of output 22 [2018-12-02 09:33:36,876 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:36,879 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:36,879 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,887 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,894 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,908 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:36,908 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:70, output treesize:42 [2018-12-02 09:33:37,230 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 09:33:37,230 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:37,232 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:37,233 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:58, output treesize:1 [2018-12-02 09:33:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:37,241 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:37,385 WARN L180 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-12-02 09:33:37,746 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-02 09:33:38,021 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-12-02 09:33:38,167 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-12-02 09:33:38,172 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:38,177 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:38,189 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. [2018-12-02 09:33:38,189 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:28 [2018-12-02 09:33:38,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 09:33:38,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2018-12-02 09:33:38,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-02 09:33:38,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-02 09:33:38,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2018-12-02 09:33:38,302 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 19 states. [2018-12-02 09:33:40,644 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 41 [2018-12-02 09:33:45,150 WARN L180 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 66 [2018-12-02 09:33:47,958 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 52 [2018-12-02 09:33:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:48,939 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-12-02 09:33:48,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-02 09:33:48,940 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2018-12-02 09:33:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:48,940 INFO L225 Difference]: With dead ends: 60 [2018-12-02 09:33:48,940 INFO L226 Difference]: Without dead ends: 51 [2018-12-02 09:33:48,941 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2018-12-02 09:33:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-12-02 09:33:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2018-12-02 09:33:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 09:33:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-12-02 09:33:48,946 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 50 [2018-12-02 09:33:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:48,947 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-12-02 09:33:48,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-02 09:33:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-12-02 09:33:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-02 09:33:48,947 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:48,947 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:48,948 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:48,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1922748826, now seen corresponding path program 1 times [2018-12-02 09:33:48,948 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:48,948 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 09:33:48,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:49,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:49,069 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 [2018-12-02 09:33:49,071 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 [2018-12-02 09:33:49,071 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:49,072 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:49,079 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:49,079 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-02 09:33:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:49,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:49,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:33:49,646 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:33:49,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 09:33:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 09:33:49,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:49,693 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 [2018-12-02 09:33:49,694 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-02 09:33:49,695 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:49,697 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:49,702 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:49,702 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-12-02 09:33:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:49,705 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:33:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 09:33:49,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 09:33:49,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12] total 20 [2018-12-02 09:33:49,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 09:33:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 09:33:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-12-02 09:33:49,895 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 20 states. [2018-12-02 09:33:51,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:33:51,077 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2018-12-02 09:33:51,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-02 09:33:51,077 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-12-02 09:33:51,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:33:51,078 INFO L225 Difference]: With dead ends: 62 [2018-12-02 09:33:51,078 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 09:33:51,079 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2018-12-02 09:33:51,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 09:33:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-12-02 09:33:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 09:33:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2018-12-02 09:33:51,084 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 50 [2018-12-02 09:33:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:33:51,084 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2018-12-02 09:33:51,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 09:33:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2018-12-02 09:33:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-02 09:33:51,084 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:33:51,084 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:33:51,085 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:33:51,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:33:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash -596828116, now seen corresponding path program 2 times [2018-12-02 09:33:51,085 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:33:51,085 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 09:33:51,098 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 09:33:51,250 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 09:33:51,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 09:33:51,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:33:51,259 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 [2018-12-02 09:33:51,259 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,266 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,266 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:33:51,279 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 22 treesize of output 19 [2018-12-02 09:33:51,283 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 19 treesize of output 22 [2018-12-02 09:33:51,286 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:51,288 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:51,289 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,293 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,295 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,301 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,301 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:33, output treesize:18 [2018-12-02 09:33:51,414 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 [2018-12-02 09:33:51,419 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 [2018-12-02 09:33:51,419 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,426 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,474 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 [2018-12-02 09:33:51,478 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 [2018-12-02 09:33:51,478 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,483 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:51,508 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. [2018-12-02 09:33:51,508 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-12-02 09:33:53,556 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 36 [2018-12-02 09:33:55,628 WARN L180 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 36 [2018-12-02 09:33:55,636 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:55,639 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:55,639 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 39 [2018-12-02 09:33:55,640 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:55,678 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 36 treesize of output 43 [2018-12-02 09:33:55,682 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 19 treesize of output 22 [2018-12-02 09:33:55,685 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:33:55,687 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:33:55,688 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:55,692 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:55,698 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:55,713 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:55,713 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:70, output treesize:53 [2018-12-02 09:33:55,991 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:56,076 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:56,487 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:33:56,532 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:33:56,778 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:56,795 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:56,932 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:56,945 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:57,020 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-02 09:33:57,020 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:117, output treesize:63 [2018-12-02 09:34:09,219 WARN L180 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 42 [2018-12-02 09:34:17,448 WARN L180 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 42 [2018-12-02 09:34:17,468 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:17,468 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 09:34:17,469 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 21 [2018-12-02 09:34:17,469 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,641 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2018-12-02 09:34:17,647 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 19 treesize of output 22 [2018-12-02 09:34:17,654 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:17,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:34:17,661 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,675 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,696 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,767 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:17,773 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 61 [2018-12-02 09:34:17,777 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 28 treesize of output 27 [2018-12-02 09:34:17,783 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:17,786 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 27 treesize of output 31 [2018-12-02 09:34:17,787 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,804 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,829 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,886 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:17,898 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 31 [2018-12-02 09:34:17,902 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 13 treesize of output 16 [2018-12-02 09:34:17,909 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:17,912 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-02 09:34:17,912 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,922 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,934 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,965 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:17,965 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 8 variables, input treesize:108, output treesize:79 [2018-12-02 09:34:18,923 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 09:34:18,924 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:18,925 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:18,926 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:116, output treesize:1 [2018-12-02 09:34:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 09:34:18,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:34:19,048 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-12-02 09:34:21,727 WARN L180 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 72 [2018-12-02 09:34:22,744 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 67 [2018-12-02 09:34:24,564 WARN L180 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 91 [2018-12-02 09:34:25,957 WARN L180 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 79 [2018-12-02 09:34:26,867 WARN L180 SmtUtils]: Spent 905.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2018-12-02 09:34:26,869 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:26,938 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:26,939 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:27,006 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:27,007 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:27,071 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:27,570 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:27,582 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:27,844 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:27,878 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:27,878 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:27,899 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:27,900 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:27,935 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,209 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,223 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,224 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,262 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,263 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,292 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:28,500 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:28,511 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:28,511 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:28,532 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:28,533 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:28,556 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:28,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 5 dim-2 vars, End of recursive call: 12 dim-0 vars, and 3 xjuncts. [2018-12-02 09:34:28,703 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 7 variables, input treesize:128, output treesize:146 [2018-12-02 09:34:29,989 WARN L180 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2018-12-02 09:34:29,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:34:29,992 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:34:29,998 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 09:34:30,100 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 09:34:30,100 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 09:34:30,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:34:30,107 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 [2018-12-02 09:34:30,107 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,112 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,112 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:34:30,117 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 22 treesize of output 19 [2018-12-02 09:34:30,119 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 19 treesize of output 22 [2018-12-02 09:34:30,122 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:30,125 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:34:30,125 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,131 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,132 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,138 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,138 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:33, output treesize:18 [2018-12-02 09:34:30,155 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 [2018-12-02 09:34:30,159 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 [2018-12-02 09:34:30,159 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,165 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,209 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 [2018-12-02 09:34:30,212 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 [2018-12-02 09:34:30,212 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,217 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,242 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. [2018-12-02 09:34:30,242 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-12-02 09:34:30,250 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:30,252 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:30,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 41 [2018-12-02 09:34:30,253 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,294 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 42 treesize of output 49 [2018-12-02 09:34:30,297 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 19 treesize of output 22 [2018-12-02 09:34:30,300 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:30,303 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:34:30,303 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,307 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,313 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,329 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,329 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:78, output treesize:59 [2018-12-02 09:34:30,366 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,408 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:30,852 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:30,881 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:31,125 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:31,141 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:31,303 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:31,317 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:31,394 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:31,394 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:117, output treesize:63 [2018-12-02 09:34:37,578 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:37,579 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 09:34:37,579 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 23 treesize of output 21 [2018-12-02 09:34:37,580 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:37,743 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:37,744 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 59 [2018-12-02 09:34:37,755 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 28 treesize of output 27 [2018-12-02 09:34:37,768 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:37,775 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 27 treesize of output 31 [2018-12-02 09:34:37,775 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:37,804 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:37,850 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:37,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 39 [2018-12-02 09:34:37,972 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 19 treesize of output 22 [2018-12-02 09:34:37,980 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:37,983 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-12-02 09:34:37,984 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,000 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,019 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,081 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:38,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 31 [2018-12-02 09:34:38,098 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 13 treesize of output 16 [2018-12-02 09:34:38,103 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:34:38,107 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-12-02 09:34:38,107 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,118 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,130 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,166 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,167 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 8 variables, input treesize:106, output treesize:77 [2018-12-02 09:34:38,785 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 09:34:38,785 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,787 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:38,787 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:116, output treesize:1 [2018-12-02 09:34:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 09:34:38,797 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:34:38,907 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-12-02 09:34:40,764 WARN L180 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 72 [2018-12-02 09:34:41,776 WARN L180 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 67 [2018-12-02 09:34:43,674 WARN L180 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 91 [2018-12-02 09:34:45,142 WARN L180 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 79 [2018-12-02 09:34:46,207 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2018-12-02 09:34:46,208 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:46,226 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:46,464 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:46,512 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:46,513 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,565 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,566 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,624 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,844 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:46,867 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:46,868 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,913 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,914 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:46,941 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,152 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,178 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,179 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,191 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,192 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,216 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:34:47,401 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:47,422 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:47,423 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:47,442 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:47,443 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-02 09:34:47,450 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:34:47,577 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 5 dim-2 vars, End of recursive call: 12 dim-0 vars, and 3 xjuncts. [2018-12-02 09:34:47,577 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 7 variables, input treesize:128, output treesize:142 [2018-12-02 09:34:47,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 09:34:47,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2018-12-02 09:34:47,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-02 09:34:47,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-02 09:34:47,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=875, Unknown=6, NotChecked=0, Total=992 [2018-12-02 09:34:47,812 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 25 states. [2018-12-02 09:34:54,745 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-12-02 09:35:07,745 WARN L180 SmtUtils]: Spent 12.22 s on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-12-02 09:35:21,673 WARN L180 SmtUtils]: Spent 12.33 s on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2018-12-02 09:35:34,341 WARN L180 SmtUtils]: Spent 12.15 s on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-12-02 09:35:42,403 WARN L180 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-12-02 09:35:55,891 WARN L180 SmtUtils]: Spent 12.28 s on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2018-12-02 09:36:00,972 WARN L180 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2018-12-02 09:36:08,513 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-12-02 09:36:09,574 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-12-02 09:36:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:36:24,212 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2018-12-02 09:36:24,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-02 09:36:24,212 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2018-12-02 09:36:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:36:24,213 INFO L225 Difference]: With dead ends: 65 [2018-12-02 09:36:24,213 INFO L226 Difference]: Without dead ends: 56 [2018-12-02 09:36:24,214 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 92.8s TimeCoverageRelationStatistics Valid=255, Invalid=1992, Unknown=9, NotChecked=0, Total=2256 [2018-12-02 09:36:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-02 09:36:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2018-12-02 09:36:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-02 09:36:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2018-12-02 09:36:24,219 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 53 [2018-12-02 09:36:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:36:24,220 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2018-12-02 09:36:24,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-02 09:36:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2018-12-02 09:36:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-02 09:36:24,220 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:36:24,220 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 09:36:24,221 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:36:24,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:36:24,221 INFO L82 PathProgramCache]: Analyzing trace with hash -989855126, now seen corresponding path program 2 times [2018-12-02 09:36:24,221 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:36:24,221 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 09:36:24,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 09:36:24,345 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 09:36:24,345 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 09:36:24,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:36:24,363 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 [2018-12-02 09:36:24,363 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,370 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:36:24,386 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 [2018-12-02 09:36:24,387 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 [2018-12-02 09:36:24,388 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,389 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,395 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,396 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2018-12-02 09:36:24,532 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 [2018-12-02 09:36:24,538 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 [2018-12-02 09:36:24,539 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,551 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,628 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:24,635 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:24,668 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,673 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:24,690 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:24,690 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:65, output treesize:34 [2018-12-02 09:36:26,738 WARN L180 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 26 [2018-12-02 09:36:28,791 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 26 [2018-12-02 09:36:28,798 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:36:28,799 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:36:28,800 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-12-02 09:36:28,800 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:28,832 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 33 treesize of output 34 [2018-12-02 09:36:28,835 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 13 treesize of output 16 [2018-12-02 09:36:28,838 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:36:28,840 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 16 treesize of output 23 [2018-12-02 09:36:28,841 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:28,848 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:28,856 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:28,872 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:28,872 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:57, output treesize:45 [2018-12-02 09:36:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 09:36:29,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:36:29,877 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-12-02 09:36:30,060 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-12-02 09:36:30,389 WARN L180 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-12-02 09:36:30,650 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-12-02 09:36:30,735 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,743 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,743 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:30,775 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:30,776 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:30,790 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:30,868 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,876 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,877 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,885 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,886 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,890 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:30,934 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-12-02 09:36:30,935 INFO L202 ElimStorePlain]: Needed 13 recursive calls to eliminate 3 variables, input treesize:57, output treesize:72 [2018-12-02 09:36:39,208 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 47 [2018-12-02 09:36:39,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 09:36:39,211 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 09:36:39,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 09:36:39,300 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 09:36:39,300 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 09:36:39,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 09:36:39,307 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 [2018-12-02 09:36:39,307 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,313 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,313 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-12-02 09:36:39,318 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 [2018-12-02 09:36:39,320 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 [2018-12-02 09:36:39,320 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,321 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,328 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,328 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2018-12-02 09:36:39,356 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 [2018-12-02 09:36:39,362 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-02 09:36:39,362 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,374 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,450 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:39,457 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:39,494 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,499 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,517 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:39,517 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:65, output treesize:34 [2018-12-02 09:36:39,559 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:36:39,560 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:36:39,561 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-12-02 09:36:39,561 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,590 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 25 treesize of output 26 [2018-12-02 09:36:39,593 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 13 treesize of output 16 [2018-12-02 09:36:39,595 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 09:36:39,597 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 16 treesize of output 23 [2018-12-02 09:36:39,597 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,604 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,612 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,626 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:39,626 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:49, output treesize:37 [2018-12-02 09:36:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 09:36:39,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 09:36:39,968 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-12-02 09:36:40,142 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-12-02 09:36:40,491 WARN L180 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-12-02 09:36:40,744 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-12-02 09:36:40,849 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-12-02 09:36:40,850 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:40,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:40,866 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,876 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,877 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:40,890 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 09:36:40,946 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,955 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,955 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,959 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,960 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-02 09:36:40,970 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 09:36:41,011 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2018-12-02 09:36:41,011 INFO L202 ElimStorePlain]: Needed 13 recursive calls to eliminate 3 variables, input treesize:57, output treesize:72 [2018-12-02 09:36:47,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 09:36:47,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-02 09:36:47,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 09:36:47,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 09:36:47,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=529, Unknown=3, NotChecked=0, Total=600 [2018-12-02 09:36:47,490 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 18 states. [2018-12-02 09:36:51,806 WARN L180 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2018-12-02 09:37:00,252 WARN L180 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2018-12-02 09:37:04,399 WARN L180 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2018-12-02 09:37:08,844 WARN L180 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2018-12-02 09:37:17,081 WARN L180 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-12-02 09:37:21,722 WARN L180 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-12-02 09:37:22,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 09:37:22,956 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-12-02 09:37:22,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-02 09:37:22,957 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2018-12-02 09:37:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 09:37:22,957 INFO L225 Difference]: With dead ends: 64 [2018-12-02 09:37:22,957 INFO L226 Difference]: Without dead ends: 52 [2018-12-02 09:37:22,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=317, Invalid=1750, Unknown=3, NotChecked=0, Total=2070 [2018-12-02 09:37:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-02 09:37:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2018-12-02 09:37:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-02 09:37:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-12-02 09:37:22,965 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 53 [2018-12-02 09:37:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 09:37:22,965 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-12-02 09:37:22,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 09:37:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-12-02 09:37:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-02 09:37:22,966 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 09:37:22,966 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2018-12-02 09:37:22,966 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 09:37:22,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 09:37:22,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1243118940, now seen corresponding path program 3 times [2018-12-02 09:37:22,966 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 09:37:22,967 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 09:37:22,982 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-02 09:37:23,305 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-02 09:37:23,305 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-12-02 09:37:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 09:37:23,606 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 09:37:23,634 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,634 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,635 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,635 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,635 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,635 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,636 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,636 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,636 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,636 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,636 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,636 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,637 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,638 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,638 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,638 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,638 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,638 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,638 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,639 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,639 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,639 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,639 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,639 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,640 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,641 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,641 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,641 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,641 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,641 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,641 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,642 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,642 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,642 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,642 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,642 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,642 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,643 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,643 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,643 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,643 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,643 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,644 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,644 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,644 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,644 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,644 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,644 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,645 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:37:23 BoogieIcfgContainer [2018-12-02 09:37:23,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 09:37:23,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 09:37:23,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 09:37:23,652 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 09:37:23,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:33:28" (3/4) ... [2018-12-02 09:37:23,654 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 09:37:23,668 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,669 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,669 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,669 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,669 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,669 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,670 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,670 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,670 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,670 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,671 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,671 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,671 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,671 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,672 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,672 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,672 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,672 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,672 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,672 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,673 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,673 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,673 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,673 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,673 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,673 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,674 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,674 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,674 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,674 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,674 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,674 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,675 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,676 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,676 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,676 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,676 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,676 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,676 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,677 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,678 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,679 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-12-02 09:37:23,707 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_02496a54-4fee-407f-80c4-6bda1a89c0d9/bin-2019/utaipan/witness.graphml [2018-12-02 09:37:23,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 09:37:23,708 INFO L168 Benchmark]: Toolchain (without parser) took 235362.09 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 245.4 MB). Free memory was 938.0 MB in the beginning and 814.9 MB in the end (delta: 123.1 MB). Peak memory consumption was 368.5 MB. Max. memory is 11.5 GB. [2018-12-02 09:37:23,708 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. [2018-12-02 09:37:23,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. [2018-12-02 09:37:23,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.42 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-02 09:37:23,709 INFO L168 Benchmark]: Boogie Preprocessor took 19.28 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. [2018-12-02 09:37:23,709 INFO L168 Benchmark]: RCFGBuilder took 195.04 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-12-02 09:37:23,710 INFO L168 Benchmark]: TraceAbstraction took 234800.12 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 109.1 MB). Free memory was 1.1 GB in the beginning and 823.7 MB in the end (delta: 273.7 MB). Peak memory consumption was 382.8 MB. Max. memory is 11.5 GB. [2018-12-02 09:37:23,710 INFO L168 Benchmark]: Witness Printer took 55.66 ms. Allocated memory is still 1.3 GB. Free memory was 823.7 MB in the beginning and 814.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. [2018-12-02 09:37:23,711 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 270.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.42 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.28 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 195.04 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234800.12 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 109.1 MB). Free memory was 1.1 GB in the beginning and 823.7 MB in the end (delta: 273.7 MB). Peak memory consumption was 382.8 MB. Max. memory is 11.5 GB. * Witness Printer took 55.66 ms. Allocated memory is still 1.3 GB. Free memory was 823.7 MB in the beginning and 814.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1714380678bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1444790120bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2690793623bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] mlist *head; VAL [\old(head)=null, \old(head)=null, head={0:0}] [L644] int i; [L645] mlist *mylist, *temp; VAL [\old(head)=null, \old(head)=null, head={0:0}] [L646] CALL insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, l={0:0}] [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={1714380678:0}, l={0:0}, malloc(sizeof(mlist))={1714380678:0}] [L634] COND TRUE head==((void *)0) [L635] l->next = ((void *)0) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={0:0}, l={1714380678:0}, malloc(sizeof(mlist))={1714380678:0}] [L640] head = l [L641] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=2, \result=0, head={1714380678:0}, k=2, l={1714380678:0}, l={0:0}, malloc(sizeof(mlist))={1714380678:0}] [L646] RET insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, head={1714380678:0}, insert_list(mylist,2)=0, mylist={0:0}] [L647] CALL insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={1714380678:0}, l={0:0}] [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={1714380678:0}, k=5, l={0:0}, l={1444790120:0}, malloc(sizeof(mlist))={1444790120:0}] [L634] COND FALSE !(head==((void *)0)) [L637] l->key = k [L638] l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={1714380678:0}, k=5, l={0:0}, l={1444790120:0}, malloc(sizeof(mlist))={1444790120:0}] [L640] head = l [L641] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=5, \result=0, head={1444790120:0}, k=5, l={0:0}, l={1444790120:0}, malloc(sizeof(mlist))={1444790120:0}] [L647] RET insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, head={1444790120:0}, insert_list(mylist,5)=0, mylist={0:0}] [L648] CALL insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={1444790120:0}, l={0:0}] [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={1444790120:0}, k=1, l={0:0}, l={-1604173673:0}, malloc(sizeof(mlist))={-1604173673:0}] [L634] COND FALSE !(head==((void *)0)) [L637] l->key = k [L638] l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={1444790120:0}, k=1, l={0:0}, l={-1604173673:0}, malloc(sizeof(mlist))={-1604173673:0}] [L640] head = l [L641] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=1, \result=0, head={-1604173673:0}, k=1, l={0:0}, l={-1604173673:0}, malloc(sizeof(mlist))={-1604173673:0}] [L648] RET insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, head={-1604173673:0}, insert_list(mylist,1)=0, mylist={0:0}] [L649] CALL insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={-1604173673:0}, l={0:0}] [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={-1604173673:0}, k=3, l={0:0}, l={1444790248:0}, malloc(sizeof(mlist))={1444790248:0}] [L634] COND FALSE !(head==((void *)0)) [L637] l->key = k [L638] l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={-1604173673:0}, k=3, l={0:0}, l={1444790248:0}, malloc(sizeof(mlist))={1444790248:0}] [L640] head = l [L641] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=3, \result=0, head={1444790248:0}, k=3, l={0:0}, l={1444790248:0}, malloc(sizeof(mlist))={1444790248:0}] [L649] RET insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, head={1444790248:0}, insert_list(mylist,3)=0, mylist={0:0}] [L650] CALL, EXPR search_list(head,2) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1444790248:0}, l={1444790248:0}] [L625] l = head VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1444790248:0}, k=2, l={1444790248:0}, l={1444790248:0}] [L626] l!=((void *)0) && l->key!=k [L626] EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1444790248:0}, k=2, l={1444790248:0}, l={1444790248:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] EXPR l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1444790248:0}, k=2, l={-1604173673:0}, l={1444790248:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] EXPR l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1444790248:0}, k=2, l={1444790120:0}, l={1444790248:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] EXPR l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] EXPR l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1444790248:0}, k=2, l={1714380678:0}, l={1444790248:0}, l!=((void *)0) && l->key!=k=0, l->key=2] [L626] COND FALSE !(l!=((void *)0) && l->key!=k) [L629] return l; VAL [\old(head)=null, \old(head)=null, \old(k)=2, \result={1714380678:0}, head={1444790248:0}, k=2, l={1714380678:0}, l={1444790248:0}] [L650] RET, EXPR search_list(head,2) VAL [\old(head)=null, \old(head)=null, head={1444790248:0}, mylist={0:0}, search_list(head,2)={1714380678:0}] [L650] temp = search_list(head,2) [L651] EXPR temp->key VAL [\old(head)=null, \old(head)=null, head={1444790248:0}, mylist={0:0}, temp={1714380678:0}, temp->key=2] [L651] CALL __VERIFIER_assert(temp->key==1) VAL [\old(cond)=0, \old(head)=null, \old(head)=null, head={1444790248:0}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(head)=null, \old(head)=null, cond=0, head={1444790248:0}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(head)=null, \old(head)=null, cond=0, head={1444790248:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. UNSAFE Result, 234.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 144.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 233 SDtfs, 412 SDslu, 735 SDs, 0 SdLazy, 2243 SolverSat, 264 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 41.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1032 GetRequests, 830 SyntacticMatches, 13 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 161.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 88.3s InterpolantComputationTime, 701 NumberOfCodeBlocks, 701 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 822 ConstructedInterpolants, 24 QuantifiedInterpolants, 511480 SizeOfPredicates, 171 NumberOfNonLiveVariables, 2947 ConjunctsInSsa, 360 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 390/564 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...