./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/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 269d8c78f03cf287c7b740c1cbaca497af69bf0a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:37:19,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:37:19,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:37:19,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:37:19,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:37:19,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:37:19,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:37:19,572 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:37:19,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:37:19,574 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:37:19,574 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:37:19,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:37:19,575 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:37:19,576 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:37:19,577 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:37:19,577 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:37:19,578 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:37:19,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:37:19,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:37:19,581 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:37:19,582 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:37:19,583 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:37:19,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:37:19,585 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:37:19,585 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:37:19,586 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:37:19,586 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:37:19,587 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:37:19,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:37:19,588 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:37:19,588 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:37:19,589 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:37:19,589 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:37:19,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:37:19,590 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:37:19,590 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:37:19,591 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 11:37:19,600 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:37:19,600 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:37:19,601 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:37:19,601 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:37:19,602 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:37:19,602 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:37:19,602 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:37:19,602 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:37:19,603 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:37:19,603 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:37:19,603 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:37:19,603 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:37:19,603 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:37:19,604 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:37:19,604 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:37:19,604 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:37:19,604 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:37:19,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:37:19,605 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:37:19,606 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:37:19,606 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:37:19,606 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:37:19,606 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:37:19,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:37:19,606 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:37:19,607 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:37:19,607 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:37:19,607 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:37:19,607 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:37:19,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:37:19,607 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:37:19,607 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_345089de-22e9-4e10-a524-418cf443d3db/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 -> 269d8c78f03cf287c7b740c1cbaca497af69bf0a [2018-11-18 11:37:19,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:37:19,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:37:19,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:37:19,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:37:19,642 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:37:19,642 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-18 11:37:19,679 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/data/6d99bd458/3967436513504376a54d2ebecfb4f757/FLAG22aade33d [2018-11-18 11:37:19,977 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:37:19,978 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-18 11:37:19,982 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/data/6d99bd458/3967436513504376a54d2ebecfb4f757/FLAG22aade33d [2018-11-18 11:37:19,991 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/data/6d99bd458/3967436513504376a54d2ebecfb4f757 [2018-11-18 11:37:19,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:37:19,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:37:19,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:37:19,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:37:19,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:37:19,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:37:19" (1/1) ... [2018-11-18 11:37:20,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f427c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:19, skipping insertion in model container [2018-11-18 11:37:20,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:37:19" (1/1) ... [2018-11-18 11:37:20,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:37:20,023 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:37:20,140 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:37:20,143 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:37:20,159 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:37:20,171 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:37:20,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20 WrapperNode [2018-11-18 11:37:20,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:37:20,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:37:20,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:37:20,172 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:37:20,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:37:20,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:37:20,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:37:20,193 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:37:20,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... [2018-11-18 11:37:20,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:37:20,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:37:20,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:37:20,255 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:37:20,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:37:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:37:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:37:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:37:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:37:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:37:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:37:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:37:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:37:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:37:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 11:37:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 11:37:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:37:20,489 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:37:20,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:37:20 BoogieIcfgContainer [2018-11-18 11:37:20,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:37:20,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:37:20,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:37:20,492 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:37:20,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:37:19" (1/3) ... [2018-11-18 11:37:20,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21be5adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:37:20, skipping insertion in model container [2018-11-18 11:37:20,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:37:20" (2/3) ... [2018-11-18 11:37:20,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21be5adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:37:20, skipping insertion in model container [2018-11-18 11:37:20,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:37:20" (3/3) ... [2018-11-18 11:37:20,495 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u_true-unreach-call.i [2018-11-18 11:37:20,502 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:37:20,508 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:37:20,524 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:37:20,551 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:37:20,551 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:37:20,551 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:37:20,551 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:37:20,551 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:37:20,551 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:37:20,551 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:37:20,552 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:37:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-11-18 11:37:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 11:37:20,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:20,574 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:20,576 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:20,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:20,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1945566331, now seen corresponding path program 1 times [2018-11-18 11:37:20,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:20,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:20,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:20,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:20,619 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:20,646 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:20,646 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:20,646 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:20,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:20,660 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:20,706 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-18 11:37:20,708 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 11:37:20,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:37:20,708 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:37:20,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:20,714 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 11:37:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:20,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:37:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:37:20,758 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:37:20,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:37:20,798 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:20,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-18 11:37:20,798 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:20,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:37:20,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:37:20,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:37:20,812 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-11-18 11:37:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:20,831 INFO L93 Difference]: Finished difference Result 84 states and 121 transitions. [2018-11-18 11:37:20,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:37:20,832 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-18 11:37:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:20,837 INFO L225 Difference]: With dead ends: 84 [2018-11-18 11:37:20,837 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 11:37:20,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:37:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 11:37:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 11:37:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 11:37:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 11:37:20,864 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 20 [2018-11-18 11:37:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:20,865 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 11:37:20,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:37:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 11:37:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 11:37:20,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:20,865 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:20,865 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:20,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:20,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1304843137, now seen corresponding path program 1 times [2018-11-18 11:37:20,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:20,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:20,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:20,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:20,867 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:20,872 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:20,872 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:20,872 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:20,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:20,880 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:20,904 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-18 11:37:20,904 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 11:37:20,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:37:20,905 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:37:20,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:20,912 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 11:37:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:20,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:37:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:37:20,945 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:37:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:37:20,982 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:20,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-11-18 11:37:20,982 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:20,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:37:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:37:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:37:20,983 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 3 states. [2018-11-18 11:37:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:21,022 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2018-11-18 11:37:21,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:37:21,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-18 11:37:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:21,023 INFO L225 Difference]: With dead ends: 74 [2018-11-18 11:37:21,024 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 11:37:21,024 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:37:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 11:37:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-11-18 11:37:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 11:37:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-11-18 11:37:21,029 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 22 [2018-11-18 11:37:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:21,030 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-11-18 11:37:21,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:37:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-11-18 11:37:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:37:21,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:21,031 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:21,031 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:21,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:21,031 INFO L82 PathProgramCache]: Analyzing trace with hash -272598018, now seen corresponding path program 1 times [2018-11-18 11:37:21,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:21,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:21,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:21,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:21,033 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:21,038 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:21,038 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:21,039 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:21,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:21,055 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:21,079 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-18 11:37:21,080 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [43], [47], [51], [55], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-18 11:37:21,103 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:37:21,104 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:37:21,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 11:37:21,200 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 62 root evaluator evaluations with a maximum evaluation depth of 7. Performed 62 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 21 variables. [2018-11-18 11:37:21,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:21,205 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 11:37:21,257 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 75.38% of their original sizes. [2018-11-18 11:37:21,257 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 11:37:21,274 INFO L415 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2018-11-18 11:37:21,274 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 11:37:21,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:21,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:37:21,275 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:21,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:37:21,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:37:21,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:37:21,275 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 4 states. [2018-11-18 11:37:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:21,396 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2018-11-18 11:37:21,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:37:21,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-18 11:37:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:21,396 INFO L225 Difference]: With dead ends: 87 [2018-11-18 11:37:21,396 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 11:37:21,397 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:37:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 11:37:21,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2018-11-18 11:37:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 11:37:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-11-18 11:37:21,403 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 27 [2018-11-18 11:37:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:21,403 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-11-18 11:37:21,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:37:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-11-18 11:37:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 11:37:21,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:21,404 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:21,405 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:21,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:21,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1346161551, now seen corresponding path program 1 times [2018-11-18 11:37:21,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:21,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:21,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:21,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:21,408 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:21,412 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:21,412 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:21,412 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:21,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:21,423 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:21,449 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-11-18 11:37:21,450 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [39], [43], [47], [51], [55], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-18 11:37:21,451 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:37:21,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:37:21,463 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 11:37:21,463 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Performed 67 root evaluator evaluations with a maximum evaluation depth of 7. Performed 67 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 21 variables. [2018-11-18 11:37:21,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:21,467 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 11:37:21,493 INFO L227 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 68.13% of their original sizes. [2018-11-18 11:37:21,494 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 11:37:21,510 INFO L415 sIntCurrentIteration]: We unified 31 AI predicates to 31 [2018-11-18 11:37:21,511 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 11:37:21,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:21,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:37:21,511 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:21,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:37:21,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:37:21,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:37:21,512 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 5 states. [2018-11-18 11:37:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:21,728 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2018-11-18 11:37:21,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:37:21,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 11:37:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:21,729 INFO L225 Difference]: With dead ends: 89 [2018-11-18 11:37:21,729 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 11:37:21,729 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:37:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 11:37:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2018-11-18 11:37:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 11:37:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-18 11:37:21,734 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 32 [2018-11-18 11:37:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:21,735 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-18 11:37:21,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:37:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-18 11:37:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 11:37:21,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:21,736 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:21,736 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:21,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:21,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1109010455, now seen corresponding path program 1 times [2018-11-18 11:37:21,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:21,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:21,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:21,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:21,737 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:21,740 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:21,740 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:21,741 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:21,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:21,747 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:21,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-11-18 11:37:21,774 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [35], [39], [43], [47], [51], [55], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-18 11:37:21,775 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:37:21,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:37:21,818 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 11:37:21,819 INFO L272 AbstractInterpreter]: Visited 20 different actions 56 times. Merged at 10 different actions 25 times. Widened at 1 different actions 1 times. Performed 246 root evaluator evaluations with a maximum evaluation depth of 7. Performed 246 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 8 fixpoints after 5 different actions. Largest state had 22 variables. [2018-11-18 11:37:21,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:21,826 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 11:37:21,850 INFO L227 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 62.05% of their original sizes. [2018-11-18 11:37:21,851 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 11:37:21,876 INFO L415 sIntCurrentIteration]: We unified 33 AI predicates to 33 [2018-11-18 11:37:21,877 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 11:37:21,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:21,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:37:21,877 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:21,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:37:21,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:37:21,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:37:21,878 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2018-11-18 11:37:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:21,991 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2018-11-18 11:37:21,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:37:21,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-11-18 11:37:21,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:21,993 INFO L225 Difference]: With dead ends: 87 [2018-11-18 11:37:21,994 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 11:37:21,994 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:37:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 11:37:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-11-18 11:37:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 11:37:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-11-18 11:37:22,006 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 34 [2018-11-18 11:37:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:22,007 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-11-18 11:37:22,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:37:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-11-18 11:37:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 11:37:22,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:22,008 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:22,008 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:22,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1402696430, now seen corresponding path program 1 times [2018-11-18 11:37:22,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:22,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:22,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:22,009 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:22,016 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:22,016 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:22,016 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:22,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,034 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:22,059 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-11-18 11:37:22,059 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [35], [39], [43], [47], [51], [55], [57], [61], [65], [85], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-18 11:37:22,061 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:37:22,061 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:37:22,122 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 11:37:22,123 INFO L272 AbstractInterpreter]: Visited 23 different actions 75 times. Merged at 11 different actions 37 times. Widened at 2 different actions 3 times. Performed 339 root evaluator evaluations with a maximum evaluation depth of 7. Performed 339 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 12 fixpoints after 6 different actions. Largest state had 22 variables. [2018-11-18 11:37:22,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:22,134 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 11:37:22,163 INFO L227 lantSequenceWeakener]: Weakened 25 states. On average, predicates are now at 61.35% of their original sizes. [2018-11-18 11:37:22,163 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 11:37:22,196 INFO L415 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-11-18 11:37:22,196 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 11:37:22,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:22,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 11:37:22,196 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:22,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:37:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:37:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:37:22,197 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2018-11-18 11:37:22,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:22,378 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2018-11-18 11:37:22,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:37:22,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-18 11:37:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:22,380 INFO L225 Difference]: With dead ends: 110 [2018-11-18 11:37:22,380 INFO L226 Difference]: Without dead ends: 85 [2018-11-18 11:37:22,381 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:37:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-18 11:37:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 54. [2018-11-18 11:37:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-18 11:37:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-11-18 11:37:22,388 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 39 [2018-11-18 11:37:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:22,389 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-11-18 11:37:22,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:37:22,389 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-11-18 11:37:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 11:37:22,390 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:22,390 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:22,390 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:22,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash -19569625, now seen corresponding path program 1 times [2018-11-18 11:37:22,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:22,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:22,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:22,392 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:22,397 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:22,397 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:22,397 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:22,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,411 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:22,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-11-18 11:37:22,434 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [35], [39], [43], [47], [51], [55], [57], [61], [65], [67], [71], [75], [81], [85], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-18 11:37:22,436 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:37:22,436 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:37:22,479 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 11:37:22,479 INFO L272 AbstractInterpreter]: Visited 26 different actions 80 times. Merged at 10 different actions 38 times. Widened at 3 different actions 3 times. Performed 349 root evaluator evaluations with a maximum evaluation depth of 7. Performed 349 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 12 fixpoints after 5 different actions. Largest state had 22 variables. [2018-11-18 11:37:22,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:22,480 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 11:37:22,501 INFO L227 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 59.79% of their original sizes. [2018-11-18 11:37:22,501 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 11:37:22,545 INFO L415 sIntCurrentIteration]: We unified 43 AI predicates to 43 [2018-11-18 11:37:22,545 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 11:37:22,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:22,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 11:37:22,545 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:22,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:37:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:37:22,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:37:22,546 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 7 states. [2018-11-18 11:37:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:22,809 INFO L93 Difference]: Finished difference Result 120 states and 147 transitions. [2018-11-18 11:37:22,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:37:22,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2018-11-18 11:37:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:22,811 INFO L225 Difference]: With dead ends: 120 [2018-11-18 11:37:22,811 INFO L226 Difference]: Without dead ends: 91 [2018-11-18 11:37:22,812 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:37:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-18 11:37:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 58. [2018-11-18 11:37:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-18 11:37:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-11-18 11:37:22,821 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 44 [2018-11-18 11:37:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:22,821 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-11-18 11:37:22,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:37:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-11-18 11:37:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 11:37:22,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:22,822 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:22,824 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:22,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:22,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1518144833, now seen corresponding path program 1 times [2018-11-18 11:37:22,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:22,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:22,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:22,826 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:22,829 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:22,829 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:22,829 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:22,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,845 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:22,880 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-11-18 11:37:22,880 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [35], [39], [43], [47], [51], [55], [57], [61], [65], [67], [71], [75], [77], [81], [85], [89], [93], [99], [103], [109], [113], [119], [135], [138], [140], [146], [147], [148], [150] [2018-11-18 11:37:22,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:37:22,881 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:37:22,951 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 11:37:22,951 INFO L272 AbstractInterpreter]: Visited 40 different actions 135 times. Merged at 21 different actions 67 times. Widened at 5 different actions 6 times. Performed 547 root evaluator evaluations with a maximum evaluation depth of 7. Performed 547 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 21 fixpoints after 11 different actions. Largest state had 23 variables. [2018-11-18 11:37:22,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:22,954 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 11:37:22,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:37:22,954 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:37:22,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:22,962 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 11:37:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:22,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:37:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 11:37:23,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:37:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 11:37:23,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:37:23,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 11:37:23,114 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 11:37:23,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:37:23,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:37:23,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:37:23,115 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 8 states. [2018-11-18 11:37:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:23,214 INFO L93 Difference]: Finished difference Result 172 states and 212 transitions. [2018-11-18 11:37:23,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:37:23,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-18 11:37:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:23,216 INFO L225 Difference]: With dead ends: 172 [2018-11-18 11:37:23,216 INFO L226 Difference]: Without dead ends: 126 [2018-11-18 11:37:23,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:37:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-11-18 11:37:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 70. [2018-11-18 11:37:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 11:37:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2018-11-18 11:37:23,228 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2018-11-18 11:37:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:23,228 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2018-11-18 11:37:23,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:37:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2018-11-18 11:37:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 11:37:23,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:37:23,229 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:37:23,229 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:37:23,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:37:23,229 INFO L82 PathProgramCache]: Analyzing trace with hash 799402753, now seen corresponding path program 2 times [2018-11-18 11:37:23,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:37:23,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:23,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:37:23,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:37:23,230 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:37:23,234 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 11:37:23,234 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 11:37:23,234 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 11:37:23,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:37:23,251 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 11:37:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:37:23,276 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 11:37:23,276 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 11:37:23,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:37:23,276 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/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 [2018-11-18 11:37:23,283 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:37:23,283 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 11:37:23,298 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-18 11:37:23,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:37:23,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:37:23,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2018-11-18 11:37:23,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 3 [2018-11-18 11:37:23,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:37:23,334 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:37:23,336 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:37:23,336 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:51, output treesize:3 [2018-11-18 11:37:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-18 11:37:23,354 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:37:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-18 11:37:23,394 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:37:23,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-11-18 11:37:23,395 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:37:23,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:37:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:37:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:37:23,395 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 5 states. [2018-11-18 11:37:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:37:23,413 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-11-18 11:37:23,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:37:23,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2018-11-18 11:37:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:37:23,419 INFO L225 Difference]: With dead ends: 70 [2018-11-18 11:37:23,419 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:37:23,419 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:37:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:37:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:37:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:37:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:37:23,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2018-11-18 11:37:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:37:23,420 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:37:23,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:37:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:37:23,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:37:23,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:37:23,824 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:37:23,824 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:37:23,825 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 81) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point L52-1(lines 52 55) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L421 ceAbstractionStarter]: At program point L52-3(lines 52 55) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point L52-4(lines 52 55) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L425 ceAbstractionStarter]: For program point L70-1(lines 70 77) no Hoare annotation was computed. [2018-11-18 11:37:23,825 INFO L421 ceAbstractionStarter]: At program point L70-3(lines 70 77) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L70-4(lines 70 77) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L29-1(lines 29 36) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L421 ceAbstractionStarter]: At program point L29-3(lines 29 36) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L29-4(lines 29 36) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 81) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 81) the Hoare annotation is: true [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 59) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 59) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L47-4(lines 47 59) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L72-1(lines 72 75) no Hoare annotation was computed. [2018-11-18 11:37:23,826 INFO L421 ceAbstractionStarter]: At program point L72-3(lines 72 75) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,826 INFO L425 ceAbstractionStarter]: For program point L72-4(lines 72 75) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L421 ceAbstractionStarter]: At program point L31-3(lines 31 34) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L31-4(lines 31 34) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L421 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0) (= |main_#t~mem4| |main_#t~mem3|)) [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L50-1(lines 50 57) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L421 ceAbstractionStarter]: At program point L50-3(lines 50 57) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L50-4(lines 50 57) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L67-1(lines 67 79) no Hoare annotation was computed. [2018-11-18 11:37:23,827 INFO L421 ceAbstractionStarter]: At program point L67-3(lines 67 79) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,827 INFO L425 ceAbstractionStarter]: For program point L67-4(lines 67 79) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point L26-1(lines 26 38) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L421 ceAbstractionStarter]: At program point L26-3(lines 26 38) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point L26-4(lines 26 38) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 11:37:23,828 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 11:37:23,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:37:23 BoogieIcfgContainer [2018-11-18 11:37:23,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:37:23,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:37:23,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:37:23,841 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:37:23,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:37:20" (3/4) ... [2018-11-18 11:37:23,844 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:37:23,849 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:37:23,849 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:37:23,849 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 11:37:23,853 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-18 11:37:23,853 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 11:37:23,854 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 11:37:23,854 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:37:23,894 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_345089de-22e9-4e10-a524-418cf443d3db/bin-2019/utaipan/witness.graphml [2018-11-18 11:37:23,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:37:23,895 INFO L168 Benchmark]: Toolchain (without parser) took 3901.61 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 237.0 MB). Free memory was 959.2 MB in the beginning and 978.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 217.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:37:23,896 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:37:23,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.94 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:37:23,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:37:23,897 INFO L168 Benchmark]: Boogie Preprocessor took 61.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -214.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:37:23,897 INFO L168 Benchmark]: RCFGBuilder took 234.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:37:23,897 INFO L168 Benchmark]: TraceAbstraction took 3350.64 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 983.7 MB in the end (delta: 155.5 MB). Peak memory consumption was 225.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:37:23,898 INFO L168 Benchmark]: Witness Printer took 53.61 ms. Allocated memory is still 1.3 GB. Free memory was 983.7 MB in the beginning and 978.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2018-11-18 11:37:23,899 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.94 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -214.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 234.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3350.64 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 983.7 MB in the end (delta: 155.5 MB). Peak memory consumption was 225.8 MB. Max. memory is 11.5 GB. * Witness Printer took 53.61 ms. Allocated memory is still 1.3 GB. Free memory was 983.7 MB in the beginning and 978.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 347 SDtfs, 655 SDslu, 425 SDs, 0 SdLazy, 113 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 468 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.9191857849752587 AbsIntWeakeningRatio, 0.8128654970760234 AbsIntAvgWeakeningVarsNumRemoved, 3.017543859649123 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 166 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 23 PreInvPairs, 48 NumberOfFragments, 219 HoareAnnotationTreeSize, 23 FomulaSimplifications, 18891 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 533 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 468 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 15626 SizeOfPredicates, 20 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 116/120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...