./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum60_false-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_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum60_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 4405509d043dde59d941f33192dd2cdce1daabca ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 16:25:06,357 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:25:06,358 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:25:06,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:25:06,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:25:06,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:25:06,366 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:25:06,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:25:06,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:25:06,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:25:06,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:25:06,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:25:06,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:25:06,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:25:06,371 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:25:06,372 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:25:06,372 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:25:06,373 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:25:06,375 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:25:06,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:25:06,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:25:06,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:25:06,379 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:25:06,379 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:25:06,379 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:25:06,380 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:25:06,380 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:25:06,381 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:25:06,381 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:25:06,382 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:25:06,382 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:25:06,383 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:25:06,383 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:25:06,383 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:25:06,384 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:25:06,384 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:25:06,384 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:25:06,394 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:25:06,394 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:25:06,395 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:25:06,395 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:25:06,395 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:25:06,396 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:25:06,396 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:25:06,396 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:25:06,396 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:25:06,396 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:25:06,396 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:25:06,396 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:25:06,397 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:25:06,397 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:25:06,397 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:25:06,397 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:25:06,398 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:25:06,399 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:25:06,399 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:25:06,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:25:06,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:25:06,399 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:25:06,399 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:25:06,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:25:06,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:25:06,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:25:06,400 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:25:06,400 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:25:06,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:25:06,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:25:06,401 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:25:06,401 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_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 -> 4405509d043dde59d941f33192dd2cdce1daabca [2018-11-18 16:25:06,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:25:06,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:25:06,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:25:06,439 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:25:06,439 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:25:06,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum60_false-unreach-call.i [2018-11-18 16:25:06,484 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/data/83cd69b2a/ee064012fa48421f9b4842d610296bfb/FLAG7bfe825c8 [2018-11-18 16:25:06,818 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:25:06,819 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/sv-benchmarks/c/reducercommutativity/rangesum60_false-unreach-call.i [2018-11-18 16:25:06,824 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/data/83cd69b2a/ee064012fa48421f9b4842d610296bfb/FLAG7bfe825c8 [2018-11-18 16:25:07,244 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/data/83cd69b2a/ee064012fa48421f9b4842d610296bfb [2018-11-18 16:25:07,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:25:07,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:25:07,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:25:07,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:25:07,251 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:25:07,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a6cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07, skipping insertion in model container [2018-11-18 16:25:07,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:25:07,274 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:25:07,376 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:25:07,381 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:25:07,396 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:25:07,404 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:25:07,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07 WrapperNode [2018-11-18 16:25:07,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:25:07,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:25:07,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:25:07,406 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:25:07,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:25:07,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:25:07,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:25:07,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:25:07,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... [2018-11-18 16:25:07,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:25:07,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:25:07,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:25:07,439 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:25:07,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 16:25:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 16:25:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:25:07,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:25:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 16:25:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:25:07,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:25:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 16:25:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:25:07,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:25:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2018-11-18 16:25:07,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2018-11-18 16:25:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 16:25:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2018-11-18 16:25:07,512 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-11-18 16:25:07,662 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:25:07,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:25:07 BoogieIcfgContainer [2018-11-18 16:25:07,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:25:07,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:25:07,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:25:07,665 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:25:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:25:07" (1/3) ... [2018-11-18 16:25:07,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567f9a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:25:07, skipping insertion in model container [2018-11-18 16:25:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:25:07" (2/3) ... [2018-11-18 16:25:07,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567f9a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:25:07, skipping insertion in model container [2018-11-18 16:25:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:25:07" (3/3) ... [2018-11-18 16:25:07,667 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum60_false-unreach-call.i [2018-11-18 16:25:07,673 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:25:07,676 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:25:07,685 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:25:07,704 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:25:07,705 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:25:07,705 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:25:07,705 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:25:07,705 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:25:07,705 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:25:07,705 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:25:07,705 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:25:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 16:25:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 16:25:07,720 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:07,721 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:07,722 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:07,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:07,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1049289672, now seen corresponding path program 1 times [2018-11-18 16:25:07,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:07,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:07,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:07,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:07,762 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:07,811 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-11-18 16:25:07,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:07,812 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:25:07,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-11-18 16:25:07,814 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [24], [26], [28], [31], [32], [39], [57], [61], [63], [64], [77], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:07,843 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:07,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:07,916 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:07,917 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Performed 56 root evaluator evaluations with a maximum evaluation depth of 3. Performed 56 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 23 variables. [2018-11-18 16:25:07,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:07,924 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:07,965 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 90.48% of their original sizes. [2018-11-18 16:25:07,965 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:07,973 INFO L415 sIntCurrentIteration]: We unified 36 AI predicates to 36 [2018-11-18 16:25:07,973 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:07,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:07,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 16:25:07,974 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:07,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:25:07,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:25:07,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:25:07,985 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2018-11-18 16:25:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:08,071 INFO L93 Difference]: Finished difference Result 69 states and 90 transitions. [2018-11-18 16:25:08,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:25:08,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-18 16:25:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:08,079 INFO L225 Difference]: With dead ends: 69 [2018-11-18 16:25:08,079 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 16:25:08,081 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:25:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 16:25:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 16:25:08,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 16:25:08,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2018-11-18 16:25:08,107 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 37 [2018-11-18 16:25:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:08,107 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2018-11-18 16:25:08,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:25:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2018-11-18 16:25:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 16:25:08,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:08,109 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:08,109 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:08,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:08,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1338067039, now seen corresponding path program 1 times [2018-11-18 16:25:08,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:08,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:08,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:08,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:08,111 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:08,123 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:08,123 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:08,123 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 16:25:08,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:08,131 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:08,172 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-11-18 16:25:08,173 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [26], [28], [31], [32], [39], [43], [46], [61], [63], [64], [68], [71], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:08,174 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:08,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:08,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:08,185 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 57 root evaluator evaluations with a maximum evaluation depth of 3. Performed 57 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 23 variables. [2018-11-18 16:25:08,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:08,187 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:08,206 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 88.89% of their original sizes. [2018-11-18 16:25:08,206 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:08,230 INFO L415 sIntCurrentIteration]: We unified 41 AI predicates to 41 [2018-11-18 16:25:08,230 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:08,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:08,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 16:25:08,230 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:08,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:25:08,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:25:08,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:25:08,232 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2018-11-18 16:25:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:08,347 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-11-18 16:25:08,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:25:08,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-11-18 16:25:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:08,348 INFO L225 Difference]: With dead ends: 62 [2018-11-18 16:25:08,348 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 16:25:08,349 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 16:25:08,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-11-18 16:25:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 16:25:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2018-11-18 16:25:08,354 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 42 [2018-11-18 16:25:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:08,355 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2018-11-18 16:25:08,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:25:08,355 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2018-11-18 16:25:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 16:25:08,356 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:08,356 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:08,356 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:08,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:08,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1866850875, now seen corresponding path program 1 times [2018-11-18 16:25:08,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:08,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:08,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:08,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:08,357 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:08,368 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:08,368 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:08,369 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:08,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:08,378 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:08,405 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2018-11-18 16:25:08,405 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [26], [28], [31], [32], [39], [43], [46], [61], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:08,407 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:08,407 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:08,442 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:08,443 INFO L272 AbstractInterpreter]: Visited 19 different actions 31 times. Merged at 3 different actions 9 times. Never widened. Performed 151 root evaluator evaluations with a maximum evaluation depth of 3. Performed 151 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 23 variables. [2018-11-18 16:25:08,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:08,445 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:08,468 INFO L227 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 84.93% of their original sizes. [2018-11-18 16:25:08,468 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:08,500 INFO L415 sIntCurrentIteration]: We unified 44 AI predicates to 44 [2018-11-18 16:25:08,500 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:08,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:08,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:25:08,500 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:08,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:25:08,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:25:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:25:08,501 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 7 states. [2018-11-18 16:25:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:08,885 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2018-11-18 16:25:08,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:25:08,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-11-18 16:25:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:08,886 INFO L225 Difference]: With dead ends: 61 [2018-11-18 16:25:08,886 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 16:25:08,887 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:25:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 16:25:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-11-18 16:25:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 16:25:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-11-18 16:25:08,892 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 45 [2018-11-18 16:25:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:08,892 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-11-18 16:25:08,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:25:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-11-18 16:25:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 16:25:08,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:08,894 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:08,894 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:08,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:08,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1254084674, now seen corresponding path program 1 times [2018-11-18 16:25:08,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:08,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:08,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:08,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:08,896 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:08,907 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:08,907 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:08,907 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 16:25:08,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:08,913 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:08,942 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 58 with the following transitions: [2018-11-18 16:25:08,942 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [26], [28], [31], [32], [39], [43], [46], [48], [53], [55], [61], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:08,943 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:08,943 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:09,169 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:09,170 INFO L272 AbstractInterpreter]: Visited 23 different actions 56 times. Merged at 8 different actions 26 times. Never widened. Performed 219 root evaluator evaluations with a maximum evaluation depth of 10. Performed 219 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 4 fixpoints after 4 different actions. Largest state had 23 variables. [2018-11-18 16:25:09,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:09,172 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:09,237 INFO L227 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 84.57% of their original sizes. [2018-11-18 16:25:09,238 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:09,258 INFO L415 sIntCurrentIteration]: We unified 56 AI predicates to 56 [2018-11-18 16:25:09,258 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:09,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:09,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:25:09,260 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:09,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:25:09,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:25:09,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:25:09,261 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2018-11-18 16:25:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:09,471 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2018-11-18 16:25:09,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:25:09,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2018-11-18 16:25:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:09,474 INFO L225 Difference]: With dead ends: 70 [2018-11-18 16:25:09,474 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 16:25:09,474 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:25:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 16:25:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-18 16:25:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 16:25:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2018-11-18 16:25:09,482 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 57 [2018-11-18 16:25:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:09,482 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2018-11-18 16:25:09,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:25:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2018-11-18 16:25:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 16:25:09,483 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:09,483 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:09,484 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:09,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:09,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1097185759, now seen corresponding path program 1 times [2018-11-18 16:25:09,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:09,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:09,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:09,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:09,485 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-18 16:25:09,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:09,546 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:25:09,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 58 with the following transitions: [2018-11-18 16:25:09,546 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [26], [28], [31], [32], [39], [43], [46], [48], [53], [55], [62], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:09,548 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:09,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:09,580 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:09,581 INFO L272 AbstractInterpreter]: Visited 31 different actions 67 times. Merged at 7 different actions 22 times. Never widened. Performed 242 root evaluator evaluations with a maximum evaluation depth of 3. Performed 242 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 3 fixpoints after 2 different actions. Largest state had 23 variables. [2018-11-18 16:25:09,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:09,600 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:09,650 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 83.29% of their original sizes. [2018-11-18 16:25:09,650 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:09,727 INFO L415 sIntCurrentIteration]: We unified 56 AI predicates to 56 [2018-11-18 16:25:09,727 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:09,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:25:09,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-11-18 16:25:09,727 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:09,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 16:25:09,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 16:25:09,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:09,728 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 12 states. [2018-11-18 16:25:10,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:10,156 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2018-11-18 16:25:10,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:25:10,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2018-11-18 16:25:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:10,157 INFO L225 Difference]: With dead ends: 85 [2018-11-18 16:25:10,157 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 16:25:10,157 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-18 16:25:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 16:25:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2018-11-18 16:25:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 16:25:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-11-18 16:25:10,164 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 57 [2018-11-18 16:25:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:10,168 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 16:25:10,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 16:25:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2018-11-18 16:25:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 16:25:10,169 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:10,169 INFO L375 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:10,169 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:10,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash -854883758, now seen corresponding path program 1 times [2018-11-18 16:25:10,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:10,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:10,170 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 16:25:10,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:10,210 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:25:10,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 61 with the following transitions: [2018-11-18 16:25:10,210 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [20], [22], [26], [28], [31], [32], [39], [43], [46], [48], [53], [55], [62], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:10,212 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:10,212 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:10,275 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:10,275 INFO L272 AbstractInterpreter]: Visited 38 different actions 163 times. Merged at 17 different actions 80 times. Never widened. Performed 574 root evaluator evaluations with a maximum evaluation depth of 3. Performed 574 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 13 fixpoints after 7 different actions. Largest state had 25 variables. [2018-11-18 16:25:10,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:10,288 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:10,324 INFO L227 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 81.14% of their original sizes. [2018-11-18 16:25:10,324 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:10,412 INFO L415 sIntCurrentIteration]: We unified 59 AI predicates to 59 [2018-11-18 16:25:10,412 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:10,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:25:10,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-11-18 16:25:10,412 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:10,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 16:25:10,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 16:25:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-18 16:25:10,413 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 14 states. [2018-11-18 16:25:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:10,807 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2018-11-18 16:25:10,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 16:25:10,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2018-11-18 16:25:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:10,810 INFO L225 Difference]: With dead ends: 75 [2018-11-18 16:25:10,810 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 16:25:10,810 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-11-18 16:25:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 16:25:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2018-11-18 16:25:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 16:25:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2018-11-18 16:25:10,818 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 60 [2018-11-18 16:25:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:10,818 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2018-11-18 16:25:10,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 16:25:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2018-11-18 16:25:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-18 16:25:10,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:10,820 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:10,820 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:10,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:10,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1548690763, now seen corresponding path program 1 times [2018-11-18 16:25:10,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:10,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:10,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:10,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:10,821 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:10,827 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:10,827 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:10,827 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:10,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:10,839 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:10,876 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 62 with the following transitions: [2018-11-18 16:25:10,877 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [26], [28], [31], [32], [39], [43], [46], [48], [51], [53], [55], [61], [62], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:10,878 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:10,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:11,181 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 16:25:11,182 INFO L272 AbstractInterpreter]: Visited 33 different actions 178 times. Merged at 19 different actions 91 times. Widened at 1 different actions 1 times. Performed 736 root evaluator evaluations with a maximum evaluation depth of 10. Performed 736 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 23 fixpoints after 11 different actions. Largest state had 23 variables. [2018-11-18 16:25:11,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:11,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 16:25:11,221 INFO L227 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 86.12% of their original sizes. [2018-11-18 16:25:11,222 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 16:25:11,243 INFO L415 sIntCurrentIteration]: We unified 60 AI predicates to 60 [2018-11-18 16:25:11,243 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 16:25:11,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:11,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 16:25:11,243 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:11,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:25:11,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:25:11,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:25:11,244 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 8 states. [2018-11-18 16:25:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:11,368 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2018-11-18 16:25:11,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:25:11,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2018-11-18 16:25:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:11,369 INFO L225 Difference]: With dead ends: 85 [2018-11-18 16:25:11,369 INFO L226 Difference]: Without dead ends: 61 [2018-11-18 16:25:11,369 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:25:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-18 16:25:11,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2018-11-18 16:25:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 16:25:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2018-11-18 16:25:11,376 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 61 [2018-11-18 16:25:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:11,376 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2018-11-18 16:25:11,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:25:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2018-11-18 16:25:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 16:25:11,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:11,378 INFO L375 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 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 16:25:11,378 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:11,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:11,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1372432828, now seen corresponding path program 1 times [2018-11-18 16:25:11,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:11,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:11,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:11,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:11,379 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:11,385 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:11,386 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:11,386 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 16:25:11,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:11,396 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:11,425 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2018-11-18 16:25:11,425 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [20], [22], [26], [28], [31], [32], [39], [43], [46], [48], [51], [53], [55], [61], [62], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:11,426 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:11,426 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:11,782 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 16:25:11,782 INFO L272 AbstractInterpreter]: Visited 41 different actions 267 times. Merged at 25 different actions 137 times. Widened at 1 different actions 1 times. Performed 1084 root evaluator evaluations with a maximum evaluation depth of 10. Performed 1084 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 34 fixpoints after 13 different actions. Largest state had 25 variables. [2018-11-18 16:25:11,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:11,785 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 16:25:11,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:11,785 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:11,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:11,799 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:11,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-18 16:25:11,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-18 16:25:11,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:11,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 16:25:11,916 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:11,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:25:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:25:11,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:11,918 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 6 states. [2018-11-18 16:25:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:11,939 INFO L93 Difference]: Finished difference Result 114 states and 144 transitions. [2018-11-18 16:25:11,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:25:11,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2018-11-18 16:25:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:11,941 INFO L225 Difference]: With dead ends: 114 [2018-11-18 16:25:11,941 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 16:25:11,941 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 16:25:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-18 16:25:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 16:25:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2018-11-18 16:25:11,949 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 64 [2018-11-18 16:25:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:11,949 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2018-11-18 16:25:11,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:25:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2018-11-18 16:25:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-18 16:25:11,951 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:11,951 INFO L375 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:11,951 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:11,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:11,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1035999330, now seen corresponding path program 2 times [2018-11-18 16:25:11,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:11,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:11,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:11,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:11,952 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:11,961 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:11,961 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:11,961 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 16:25:11,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:11,976 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,016 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:12,016 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:12,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:12,016 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:12,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:25:12,024 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 16:25:12,043 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 16:25:12,044 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:12,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-18 16:25:12,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-18 16:25:12,132 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:25:12,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-11-18 16:25:12,132 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:25:12,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:25:12,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:25:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:12,133 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2018-11-18 16:25:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:12,144 INFO L93 Difference]: Finished difference Result 114 states and 150 transitions. [2018-11-18 16:25:12,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:25:12,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-18 16:25:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:12,145 INFO L225 Difference]: With dead ends: 114 [2018-11-18 16:25:12,145 INFO L226 Difference]: Without dead ends: 72 [2018-11-18 16:25:12,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-18 16:25:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2018-11-18 16:25:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-18 16:25:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2018-11-18 16:25:12,154 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 73 [2018-11-18 16:25:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:12,154 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2018-11-18 16:25:12,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:25:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2018-11-18 16:25:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-18 16:25:12,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:12,155 INFO L375 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:12,155 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:12,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1140034890, now seen corresponding path program 1 times [2018-11-18 16:25:12,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:12,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:12,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,158 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:12,165 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:12,166 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:12,166 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/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 16:25:12,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:12,176 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,201 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 82 with the following transitions: [2018-11-18 16:25:12,201 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [9], [11], [15], [18], [20], [22], [26], [28], [31], [32], [39], [43], [46], [48], [51], [53], [55], [61], [63], [64], [68], [71], [73], [75], [79], [80], [81], [82], [84], [85], [86], [87], [88], [89], [90], [91] [2018-11-18 16:25:12,202 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:25:12,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:25:12,384 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 16:25:12,385 INFO L272 AbstractInterpreter]: Visited 40 different actions 143 times. Merged at 12 different actions 59 times. Never widened. Performed 546 root evaluator evaluations with a maximum evaluation depth of 10. Performed 546 inverse root evaluator evaluations with a maximum inverse evaluation depth of 10. Found 15 fixpoints after 8 different actions. Largest state had 25 variables. [2018-11-18 16:25:12,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:12,396 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 16:25:12,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:12,396 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:12,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:12,405 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-11-18 16:25:12,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-11-18 16:25:12,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:12,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 16:25:12,534 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:12,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 16:25:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 16:25:12,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:12,535 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 12 states. [2018-11-18 16:25:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:12,559 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2018-11-18 16:25:12,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:25:12,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2018-11-18 16:25:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:12,561 INFO L225 Difference]: With dead ends: 128 [2018-11-18 16:25:12,561 INFO L226 Difference]: Without dead ends: 84 [2018-11-18 16:25:12,561 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-18 16:25:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-11-18 16:25:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-18 16:25:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2018-11-18 16:25:12,570 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 81 [2018-11-18 16:25:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:12,570 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2018-11-18 16:25:12,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 16:25:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2018-11-18 16:25:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-18 16:25:12,571 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:12,571 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 6, 6, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:12,571 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:12,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash 424816630, now seen corresponding path program 2 times [2018-11-18 16:25:12,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:12,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:12,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,575 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:12,583 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:12,583 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:12,583 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:12,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:12,596 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,636 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:12,636 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:12,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:12,636 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:12,646 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:25:12,647 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 16:25:12,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 16:25:12,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:12,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2018-11-18 16:25:12,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2018-11-18 16:25:12,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:12,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 16:25:12,798 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:12,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:25:12,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:25:12,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:12,799 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand 6 states. [2018-11-18 16:25:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:12,818 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2018-11-18 16:25:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:25:12,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-11-18 16:25:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:12,819 INFO L225 Difference]: With dead ends: 126 [2018-11-18 16:25:12,819 INFO L226 Difference]: Without dead ends: 102 [2018-11-18 16:25:12,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:12,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-11-18 16:25:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-11-18 16:25:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-11-18 16:25:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2018-11-18 16:25:12,825 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 99 [2018-11-18 16:25:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:12,825 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2018-11-18 16:25:12,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:25:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2018-11-18 16:25:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-18 16:25:12,826 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:12,827 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:12,827 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:12,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:12,827 INFO L82 PathProgramCache]: Analyzing trace with hash 94552847, now seen corresponding path program 3 times [2018-11-18 16:25:12,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:12,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:12,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:12,828 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:12,838 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:12,838 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:12,838 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:12,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:12,852 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:12,886 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:12,886 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:12,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:12,886 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:12,899 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:25:12,899 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 16:25:12,940 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:25:12,940 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:12,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-11-18 16:25:13,018 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-11-18 16:25:13,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:13,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-11-18 16:25:13,161 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:13,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 16:25:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 16:25:13,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:25:13,162 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 24 states. [2018-11-18 16:25:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:13,203 INFO L93 Difference]: Finished difference Result 200 states and 235 transitions. [2018-11-18 16:25:13,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 16:25:13,203 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 108 [2018-11-18 16:25:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:13,204 INFO L225 Difference]: With dead ends: 200 [2018-11-18 16:25:13,204 INFO L226 Difference]: Without dead ends: 138 [2018-11-18 16:25:13,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:25:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-18 16:25:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-11-18 16:25:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-11-18 16:25:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2018-11-18 16:25:13,215 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 108 [2018-11-18 16:25:13,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:13,215 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2018-11-18 16:25:13,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 16:25:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2018-11-18 16:25:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-18 16:25:13,216 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:13,216 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 9, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:13,216 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:13,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1673688945, now seen corresponding path program 4 times [2018-11-18 16:25:13,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:13,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:13,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:13,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:13,217 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:13,231 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:13,231 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:13,231 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:13,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:13,253 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:13,294 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:13,295 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:13,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:13,295 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:13,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:13,301 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:13,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-11-18 16:25:13,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-11-18 16:25:13,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:13,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2018-11-18 16:25:13,960 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:13,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-18 16:25:13,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-18 16:25:13,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 16:25:13,961 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 48 states. [2018-11-18 16:25:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:14,071 INFO L93 Difference]: Finished difference Result 272 states and 319 transitions. [2018-11-18 16:25:14,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-18 16:25:14,072 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 144 [2018-11-18 16:25:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:14,073 INFO L225 Difference]: With dead ends: 272 [2018-11-18 16:25:14,073 INFO L226 Difference]: Without dead ends: 210 [2018-11-18 16:25:14,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 16:25:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-11-18 16:25:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-11-18 16:25:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-11-18 16:25:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 222 transitions. [2018-11-18 16:25:14,082 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 222 transitions. Word has length 144 [2018-11-18 16:25:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:14,082 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 222 transitions. [2018-11-18 16:25:14,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-18 16:25:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 222 transitions. [2018-11-18 16:25:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-18 16:25:14,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:14,083 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 46, 9, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:14,083 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:14,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:14,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1563110513, now seen corresponding path program 5 times [2018-11-18 16:25:14,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:14,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:14,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:14,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:14,084 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:14,108 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:14,108 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:14,108 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:14,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:14,120 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:14,163 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:14,163 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:14,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:14,163 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:14,169 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:25:14,169 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 16:25:14,200 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 16:25:14,200 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:14,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3337 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 3287 trivial. 0 not checked. [2018-11-18 16:25:14,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3337 backedges. 47 proven. 3 refuted. 0 times theorem prover too weak. 3287 trivial. 0 not checked. [2018-11-18 16:25:14,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:14,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 16:25:14,292 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:14,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:25:14,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:25:14,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:25:14,293 INFO L87 Difference]: Start difference. First operand 210 states and 222 transitions. Second operand 8 states. [2018-11-18 16:25:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:14,322 INFO L93 Difference]: Finished difference Result 284 states and 322 transitions. [2018-11-18 16:25:14,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:25:14,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2018-11-18 16:25:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:14,325 INFO L225 Difference]: With dead ends: 284 [2018-11-18 16:25:14,325 INFO L226 Difference]: Without dead ends: 226 [2018-11-18 16:25:14,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:25:14,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-11-18 16:25:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-11-18 16:25:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-11-18 16:25:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 242 transitions. [2018-11-18 16:25:14,335 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 242 transitions. Word has length 216 [2018-11-18 16:25:14,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:14,336 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 242 transitions. [2018-11-18 16:25:14,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:25:14,336 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 242 transitions. [2018-11-18 16:25:14,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-18 16:25:14,337 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:14,337 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 46, 21, 18, 18, 15, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:14,337 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:14,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash 454285163, now seen corresponding path program 6 times [2018-11-18 16:25:14,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:14,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:14,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:14,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:14,338 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:14,361 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:14,361 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:14,361 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:14,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:14,377 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:14,425 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:14,425 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:14,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:14,425 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:14,432 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:25:14,432 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 16:25:14,492 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:25:14,493 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:14,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2018-11-18 16:25:15,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2018-11-18 16:25:16,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:16,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 62 [2018-11-18 16:25:16,075 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:16,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-18 16:25:16,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-18 16:25:16,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 16:25:16,076 INFO L87 Difference]: Start difference. First operand 226 states and 242 transitions. Second operand 62 states. [2018-11-18 16:25:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:16,187 INFO L93 Difference]: Finished difference Result 346 states and 391 transitions. [2018-11-18 16:25:16,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-18 16:25:16,188 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 264 [2018-11-18 16:25:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:16,189 INFO L225 Difference]: With dead ends: 346 [2018-11-18 16:25:16,189 INFO L226 Difference]: Without dead ends: 268 [2018-11-18 16:25:16,190 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 433 SyntacticMatches, 34 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 16:25:16,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-11-18 16:25:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2018-11-18 16:25:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-11-18 16:25:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 284 transitions. [2018-11-18 16:25:16,198 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 284 transitions. Word has length 264 [2018-11-18 16:25:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:16,198 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 284 transitions. [2018-11-18 16:25:16,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-18 16:25:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 284 transitions. [2018-11-18 16:25:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-18 16:25:16,199 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:16,200 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 60, 21, 18, 18, 15, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:16,200 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:16,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash 532876075, now seen corresponding path program 7 times [2018-11-18 16:25:16,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:16,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:16,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:16,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:16,201 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:16,228 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:16,228 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:16,228 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:16,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:16,239 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:16,312 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:16,312 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:16,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:16,312 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:16,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:16,321 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:16,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 127 proven. 3 refuted. 0 times theorem prover too weak. 6064 trivial. 0 not checked. [2018-11-18 16:25:16,447 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6194 backedges. 33 proven. 349 refuted. 0 times theorem prover too weak. 5812 trivial. 0 not checked. [2018-11-18 16:25:16,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:16,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 16:25:16,520 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:16,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:25:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:25:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:16,521 INFO L87 Difference]: Start difference. First operand 268 states and 284 transitions. Second operand 6 states. [2018-11-18 16:25:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:16,549 INFO L93 Difference]: Finished difference Result 354 states and 395 transitions. [2018-11-18 16:25:16,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:25:16,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2018-11-18 16:25:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:16,550 INFO L225 Difference]: With dead ends: 354 [2018-11-18 16:25:16,551 INFO L226 Difference]: Without dead ends: 280 [2018-11-18 16:25:16,551 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:25:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-11-18 16:25:16,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2018-11-18 16:25:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-11-18 16:25:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 296 transitions. [2018-11-18 16:25:16,559 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 296 transitions. Word has length 306 [2018-11-18 16:25:16,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:16,560 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 296 transitions. [2018-11-18 16:25:16,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:25:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 296 transitions. [2018-11-18 16:25:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-18 16:25:16,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:16,562 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 60, 30, 27, 27, 15, 12, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:16,562 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:16,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:16,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1740729706, now seen corresponding path program 8 times [2018-11-18 16:25:16,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:16,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:16,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:16,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:16,563 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:16,580 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:16,580 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:16,580 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:16,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:16,587 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:16,637 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:16,638 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:16,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:16,638 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:16,660 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:25:16,661 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 16:25:16,772 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 16:25:16,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:16,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7040 backedges. 732 proven. 26 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2018-11-18 16:25:16,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7040 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7014 trivial. 0 not checked. [2018-11-18 16:25:17,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:17,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 16:25:17,045 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:17,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 16:25:17,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 16:25:17,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:17,046 INFO L87 Difference]: Start difference. First operand 280 states and 296 transitions. Second operand 12 states. [2018-11-18 16:25:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:17,090 INFO L93 Difference]: Finished difference Result 368 states and 403 transitions. [2018-11-18 16:25:17,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:25:17,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 342 [2018-11-18 16:25:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:17,092 INFO L225 Difference]: With dead ends: 368 [2018-11-18 16:25:17,092 INFO L226 Difference]: Without dead ends: 316 [2018-11-18 16:25:17,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-11-18 16:25:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-11-18 16:25:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-11-18 16:25:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 332 transitions. [2018-11-18 16:25:17,107 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 332 transitions. Word has length 342 [2018-11-18 16:25:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:17,107 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 332 transitions. [2018-11-18 16:25:17,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 16:25:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 332 transitions. [2018-11-18 16:25:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-18 16:25:17,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:17,112 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 60, 30, 27, 27, 15, 12, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:17,112 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:17,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash -586419466, now seen corresponding path program 9 times [2018-11-18 16:25:17,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:17,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:17,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:17,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:17,113 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:17,135 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:17,135 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:17,135 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:17,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:17,144 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:17,226 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:17,226 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:17,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:17,226 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:17,234 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:25:17,235 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 16:25:17,303 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:25:17,303 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:17,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7169 backedges. 454 proven. 36 refuted. 0 times theorem prover too weak. 6679 trivial. 0 not checked. [2018-11-18 16:25:17,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7169 backedges. 90 proven. 766 refuted. 0 times theorem prover too weak. 6313 trivial. 0 not checked. [2018-11-18 16:25:17,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:17,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 16:25:17,450 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:17,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 16:25:17,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 16:25:17,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:17,451 INFO L87 Difference]: Start difference. First operand 316 states and 332 transitions. Second operand 12 states. [2018-11-18 16:25:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:17,483 INFO L93 Difference]: Finished difference Result 462 states and 506 transitions. [2018-11-18 16:25:17,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 16:25:17,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 360 [2018-11-18 16:25:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:17,485 INFO L225 Difference]: With dead ends: 462 [2018-11-18 16:25:17,486 INFO L226 Difference]: Without dead ends: 340 [2018-11-18 16:25:17,486 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:25:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-18 16:25:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-11-18 16:25:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-18 16:25:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 356 transitions. [2018-11-18 16:25:17,500 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 356 transitions. Word has length 360 [2018-11-18 16:25:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:17,500 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 356 transitions. [2018-11-18 16:25:17,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 16:25:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 356 transitions. [2018-11-18 16:25:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-18 16:25:17,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:17,503 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 60, 48, 45, 45, 30, 15, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:17,503 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:17,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:17,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1890280372, now seen corresponding path program 10 times [2018-11-18 16:25:17,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:17,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:17,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:17,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:17,504 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:17,526 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:17,526 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:17,526 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:17,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:17,540 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:17,626 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:17,627 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:17,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:17,627 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:17,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:17,633 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:17,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9833 backedges. 1540 proven. 210 refuted. 0 times theorem prover too weak. 8083 trivial. 0 not checked. [2018-11-18 16:25:17,813 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9833 backedges. 204 proven. 2140 refuted. 0 times theorem prover too weak. 7489 trivial. 0 not checked. [2018-11-18 16:25:18,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:18,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-11-18 16:25:18,017 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:18,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 16:25:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 16:25:18,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:25:18,018 INFO L87 Difference]: Start difference. First operand 340 states and 356 transitions. Second operand 24 states. [2018-11-18 16:25:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:18,182 INFO L93 Difference]: Finished difference Result 534 states and 584 transitions. [2018-11-18 16:25:18,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 16:25:18,183 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 432 [2018-11-18 16:25:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:18,184 INFO L225 Difference]: With dead ends: 534 [2018-11-18 16:25:18,185 INFO L226 Difference]: Without dead ends: 388 [2018-11-18 16:25:18,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:25:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-11-18 16:25:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2018-11-18 16:25:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-11-18 16:25:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 404 transitions. [2018-11-18 16:25:18,200 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 404 transitions. Word has length 432 [2018-11-18 16:25:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:18,200 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 404 transitions. [2018-11-18 16:25:18,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 16:25:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 404 transitions. [2018-11-18 16:25:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-11-18 16:25:18,203 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:18,204 INFO L375 BasicCegarLoop]: trace histogram [84, 81, 81, 66, 61, 60, 60, 15, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:18,204 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:18,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash -759192328, now seen corresponding path program 11 times [2018-11-18 16:25:18,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:18,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:18,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:18,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:18,205 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:18,225 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:18,225 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:18,226 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:18,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:18,238 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:18,327 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:18,327 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:18,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:18,328 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:18,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:25:18,336 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 16:25:18,639 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 16:25:18,639 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:18,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 19049 backedges. 1772 proven. 55 refuted. 0 times theorem prover too weak. 17222 trivial. 0 not checked. [2018-11-18 16:25:18,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 19049 backedges. 1772 proven. 55 refuted. 0 times theorem prover too weak. 17222 trivial. 0 not checked. [2018-11-18 16:25:18,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:18,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-18 16:25:18,948 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:18,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 16:25:18,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 16:25:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 16:25:18,949 INFO L87 Difference]: Start difference. First operand 388 states and 404 transitions. Second operand 16 states. [2018-11-18 16:25:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:19,009 INFO L93 Difference]: Finished difference Result 614 states and 668 transitions. [2018-11-18 16:25:19,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 16:25:19,010 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 576 [2018-11-18 16:25:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:19,011 INFO L225 Difference]: With dead ends: 614 [2018-11-18 16:25:19,011 INFO L226 Difference]: Without dead ends: 420 [2018-11-18 16:25:19,013 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-18 16:25:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-11-18 16:25:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2018-11-18 16:25:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2018-11-18 16:25:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 444 transitions. [2018-11-18 16:25:19,023 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 444 transitions. Word has length 576 [2018-11-18 16:25:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:19,023 INFO L480 AbstractCegarLoop]: Abstraction has 420 states and 444 transitions. [2018-11-18 16:25:19,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 16:25:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 444 transitions. [2018-11-18 16:25:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-11-18 16:25:19,026 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:19,027 INFO L375 BasicCegarLoop]: trace histogram [108, 105, 105, 66, 61, 60, 60, 39, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:19,027 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:19,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2106596176, now seen corresponding path program 12 times [2018-11-18 16:25:19,027 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:19,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:19,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:19,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:19,028 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:19,043 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:19,043 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:19,043 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:19,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:19,050 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:19,130 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:19,131 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:19,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:19,131 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:19,137 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:25:19,137 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 16:25:19,238 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:25:19,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:19,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 28073 backedges. 11250 proven. 990 refuted. 0 times theorem prover too weak. 15833 trivial. 0 not checked. [2018-11-18 16:25:19,525 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 28073 backedges. 11250 proven. 990 refuted. 0 times theorem prover too weak. 15833 trivial. 0 not checked. [2018-11-18 16:25:19,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:19,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 33 [2018-11-18 16:25:19,946 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:19,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 16:25:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 16:25:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 16:25:19,947 INFO L87 Difference]: Start difference. First operand 420 states and 444 transitions. Second operand 33 states. [2018-11-18 16:25:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:20,027 INFO L93 Difference]: Finished difference Result 682 states and 745 transitions. [2018-11-18 16:25:20,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-18 16:25:20,028 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 672 [2018-11-18 16:25:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:20,030 INFO L225 Difference]: With dead ends: 682 [2018-11-18 16:25:20,030 INFO L226 Difference]: Without dead ends: 456 [2018-11-18 16:25:20,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1343 GetRequests, 1297 SyntacticMatches, 15 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 16:25:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2018-11-18 16:25:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2018-11-18 16:25:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2018-11-18 16:25:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 480 transitions. [2018-11-18 16:25:20,049 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 480 transitions. Word has length 672 [2018-11-18 16:25:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:20,050 INFO L480 AbstractCegarLoop]: Abstraction has 456 states and 480 transitions. [2018-11-18 16:25:20,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 16:25:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 480 transitions. [2018-11-18 16:25:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2018-11-18 16:25:20,055 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:20,055 INFO L375 BasicCegarLoop]: trace histogram [135, 132, 132, 93, 61, 60, 60, 39, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:20,055 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:20,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:20,056 INFO L82 PathProgramCache]: Analyzing trace with hash 93832817, now seen corresponding path program 13 times [2018-11-18 16:25:20,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:20,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:20,056 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:20,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:20,057 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:20,080 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:20,080 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:20,080 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:20,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:20,089 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:20,182 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:20,182 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:20,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:20,182 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:20,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:20,190 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:20,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 40979 backedges. 15846 proven. 3872 refuted. 0 times theorem prover too weak. 21261 trivial. 0 not checked. [2018-11-18 16:25:20,956 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 40979 backedges. 0 proven. 19722 refuted. 0 times theorem prover too weak. 21257 trivial. 0 not checked. [2018-11-18 16:25:21,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:21,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 62 [2018-11-18 16:25:21,968 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:21,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-18 16:25:21,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-18 16:25:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 16:25:21,969 INFO L87 Difference]: Start difference. First operand 456 states and 480 transitions. Second operand 62 states. [2018-11-18 16:25:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:22,144 INFO L93 Difference]: Finished difference Result 782 states and 868 transitions. [2018-11-18 16:25:22,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-18 16:25:22,147 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 780 [2018-11-18 16:25:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:22,149 INFO L225 Difference]: With dead ends: 782 [2018-11-18 16:25:22,149 INFO L226 Difference]: Without dead ends: 520 [2018-11-18 16:25:22,150 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1559 GetRequests, 1469 SyntacticMatches, 30 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 16:25:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2018-11-18 16:25:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2018-11-18 16:25:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-18 16:25:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 560 transitions. [2018-11-18 16:25:22,162 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 560 transitions. Word has length 780 [2018-11-18 16:25:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:22,163 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 560 transitions. [2018-11-18 16:25:22,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-18 16:25:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 560 transitions. [2018-11-18 16:25:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2018-11-18 16:25:22,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:22,168 INFO L375 BasicCegarLoop]: trace histogram [183, 180, 180, 93, 87, 61, 60, 60, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:22,168 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:22,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:22,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1206460959, now seen corresponding path program 14 times [2018-11-18 16:25:22,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:22,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:22,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:22,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:22,169 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:22,188 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:22,188 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:22,188 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:22,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:22,213 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:22,311 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:22,311 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:22,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:22,311 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:22,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:25:22,318 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 16:25:22,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-18 16:25:22,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:22,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 71123 backedges. 29292 proven. 155 refuted. 0 times theorem prover too weak. 41676 trivial. 0 not checked. [2018-11-18 16:25:22,867 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 71123 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 70968 trivial. 0 not checked. [2018-11-18 16:25:23,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:23,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-11-18 16:25:23,323 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:23,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 16:25:23,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 16:25:23,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:25:23,325 INFO L87 Difference]: Start difference. First operand 520 states and 560 transitions. Second operand 24 states. [2018-11-18 16:25:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:23,382 INFO L93 Difference]: Finished difference Result 848 states and 943 transitions. [2018-11-18 16:25:23,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 16:25:23,383 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 972 [2018-11-18 16:25:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:23,385 INFO L225 Difference]: With dead ends: 848 [2018-11-18 16:25:23,385 INFO L226 Difference]: Without dead ends: 592 [2018-11-18 16:25:23,386 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1943 GetRequests, 1921 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:25:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2018-11-18 16:25:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2018-11-18 16:25:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2018-11-18 16:25:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 632 transitions. [2018-11-18 16:25:23,407 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 632 transitions. Word has length 972 [2018-11-18 16:25:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:23,407 INFO L480 AbstractCegarLoop]: Abstraction has 592 states and 632 transitions. [2018-11-18 16:25:23,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 16:25:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 632 transitions. [2018-11-18 16:25:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2018-11-18 16:25:23,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:23,416 INFO L375 BasicCegarLoop]: trace histogram [183, 180, 180, 93, 87, 61, 60, 60, 23, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:23,416 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:23,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:23,416 INFO L82 PathProgramCache]: Analyzing trace with hash -913464415, now seen corresponding path program 15 times [2018-11-18 16:25:23,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:23,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:23,417 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:23,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:23,417 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:23,446 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:23,446 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:23,446 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:23,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:23,459 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:23,562 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:23,562 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:23,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:23,562 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:23,568 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:25:23,568 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-18 16:25:23,695 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:25:23,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:25:23,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 71705 backedges. 29292 proven. 737 refuted. 0 times theorem prover too weak. 41676 trivial. 0 not checked. [2018-11-18 16:25:24,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 71705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 70968 trivial. 0 not checked. [2018-11-18 16:25:24,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:24,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2018-11-18 16:25:24,792 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:24,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-18 16:25:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-18 16:25:24,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 16:25:24,793 INFO L87 Difference]: Start difference. First operand 592 states and 632 transitions. Second operand 48 states. [2018-11-18 16:25:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:24,880 INFO L93 Difference]: Finished difference Result 992 states and 1111 transitions. [2018-11-18 16:25:24,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-18 16:25:24,881 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 1008 [2018-11-18 16:25:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:24,883 INFO L225 Difference]: With dead ends: 992 [2018-11-18 16:25:24,884 INFO L226 Difference]: Without dead ends: 736 [2018-11-18 16:25:24,885 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2015 GetRequests, 1969 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 16:25:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-11-18 16:25:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2018-11-18 16:25:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2018-11-18 16:25:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 776 transitions. [2018-11-18 16:25:24,911 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 776 transitions. Word has length 1008 [2018-11-18 16:25:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:24,912 INFO L480 AbstractCegarLoop]: Abstraction has 736 states and 776 transitions. [2018-11-18 16:25:24,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-18 16:25:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 776 transitions. [2018-11-18 16:25:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2018-11-18 16:25:24,921 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:24,921 INFO L375 BasicCegarLoop]: trace histogram [183, 180, 180, 93, 87, 61, 60, 60, 47, 46, 46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:24,921 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:24,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1194619103, now seen corresponding path program 16 times [2018-11-18 16:25:24,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:24,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:24,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:24,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:24,923 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:24,953 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:24,953 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:24,953 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:24,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:24,967 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:25,100 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 16:25:25,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 16:25:25,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:25:25,100 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:25:25,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:25,106 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:25:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:25:25,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:25:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 74165 backedges. 29292 proven. 3197 refuted. 0 times theorem prover too weak. 41676 trivial. 0 not checked. [2018-11-18 16:25:26,239 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:25:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 74165 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 70968 trivial. 0 not checked. [2018-11-18 16:25:27,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:25:27,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 61 [2018-11-18 16:25:27,409 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:25:27,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-11-18 16:25:27,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-11-18 16:25:27,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-11-18 16:25:27,411 INFO L87 Difference]: Start difference. First operand 736 states and 776 transitions. Second operand 61 states. [2018-11-18 16:25:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:25:27,515 INFO L93 Difference]: Finished difference Result 1070 states and 1167 transitions. [2018-11-18 16:25:27,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-11-18 16:25:27,516 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 1080 [2018-11-18 16:25:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:25:27,518 INFO L225 Difference]: With dead ends: 1070 [2018-11-18 16:25:27,518 INFO L226 Difference]: Without dead ends: 814 [2018-11-18 16:25:27,520 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2159 GetRequests, 2065 SyntacticMatches, 35 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-11-18 16:25:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2018-11-18 16:25:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2018-11-18 16:25:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2018-11-18 16:25:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 854 transitions. [2018-11-18 16:25:27,550 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 854 transitions. Word has length 1080 [2018-11-18 16:25:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:25:27,551 INFO L480 AbstractCegarLoop]: Abstraction has 814 states and 854 transitions. [2018-11-18 16:25:27,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-11-18 16:25:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 854 transitions. [2018-11-18 16:25:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2018-11-18 16:25:27,560 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:25:27,560 INFO L375 BasicCegarLoop]: trace histogram [183, 180, 180, 93, 87, 61, 60, 60, 60, 59, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:25:27,560 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:25:27,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:25:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash -2117153536, now seen corresponding path program 17 times [2018-11-18 16:25:27,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:25:27,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:27,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:25:27,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:25:27,562 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:25:27,590 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-18 16:25:27,590 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-18 16:25:27,591 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0906b5d4-e5f4-4985-968a-e57dbee12ed4/bin-2019/utaipan/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-18 16:25:27,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:25:27,602 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-18 16:25:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-18 16:25:29,748 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2018-11-18 16:25:29,748 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:25:29,811 WARN L208 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-11-18 16:25:29,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:25:29 BoogieIcfgContainer [2018-11-18 16:25:29,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:25:29,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:25:29,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:25:29,812 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:25:29,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:25:07" (3/4) ... [2018-11-18 16:25:29,814 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 16:25:29,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:25:29,815 INFO L168 Benchmark]: Toolchain (without parser) took 22568.30 ms. Allocated memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: 1.4 GB). Free memory was 958.1 MB in the beginning and 1.3 GB in the end (delta: -384.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2018-11-18 16:25:29,816 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:25:29,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.12 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 944.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:29,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.90 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:25:29,816 INFO L168 Benchmark]: Boogie Preprocessor took 17.50 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 941.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:29,816 INFO L168 Benchmark]: RCFGBuilder took 223.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 80.2 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -113.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:25:29,817 INFO L168 Benchmark]: TraceAbstraction took 22148.29 ms. Allocated memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: 1.3 GB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -287.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2018-11-18 16:25:29,817 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 2.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:25:29,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.12 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 944.6 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 15.90 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.50 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 941.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 80.2 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -113.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22148.29 ms. Allocated memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: 1.3 GB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -287.0 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. * Witness Printer took 2.64 ms. Allocated memory is still 2.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L31] FCALL int x[60]; [L32] CALL init_nondet(x) [L5] int i; [L6] i = 0 [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND TRUE i < 60 [L7] FCALL x[i] = __VERIFIER_nondet_int() [L6] i++ [L6] COND FALSE, RET !(i < 60) [L32] init_nondet(x) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L38] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 60) [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; [L38] EXPR rangesum(x) [L38] ret = rangesum(x) [L40] EXPR, FCALL x[0] [L40] temp=x[0] [L40] EXPR, FCALL x[1] [L40] FCALL x[0] = x[1] [L40] FCALL x[1] = temp [L41] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 60) [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; [L41] EXPR rangesum(x) [L41] ret2 = rangesum(x) [L42] EXPR, FCALL x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND TRUE i<60 -1 [L44] EXPR, FCALL x[i+1] [L44] FCALL x[i] = x[i+1] [L43] i++ [L43] COND FALSE !(i<60 -1) [L46] FCALL x[60 -1] = temp [L47] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND FALSE !(i > 60/2) [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND TRUE i < 60 [L18] COND TRUE i > 60/2 [L19] EXPR, FCALL x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 [L17] i++ [L17] COND FALSE !(i < 60) [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; [L47] EXPR rangesum(x) [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. UNKNOWN Result, 22.1s OverallTime, 26 OverallIterations, 183 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 905 SDtfs, 1022 SDslu, 3474 SDs, 0 SdLazy, 1136 SolverSat, 287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 14 DeclaredPredicates, 15508 GetRequests, 14902 SyntacticMatches, 114 SemanticMatches, 492 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3176 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=814occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.4s AbstIntTime, 9 AbstIntIterations, 7 AbstIntStrong, 0.9151202569526435 AbsIntWeakeningRatio, 1.0340909090909092 AbsIntAvgWeakeningVarsNumRemoved, 3.303977272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 37 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 16632 NumberOfCodeBlocks, 14922 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 15233 ConstructedInterpolants, 0 QuantifiedInterpolants, 12615509 SizeOfPredicates, 22 NumberOfNonLiveVariables, 12264 ConjunctsInSsa, 301 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 643162/688856 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...