./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers2_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers2_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e872a0dffbf376eb2d8b1e3516401a8dafe115a6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:11:42,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:11:42,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:11:42,525 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:11:42,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:11:42,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:11:42,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:11:42,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:11:42,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:11:42,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:11:42,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:11:42,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:11:42,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:11:42,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:11:42,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:11:42,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:11:42,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:11:42,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:11:42,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:11:42,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:11:42,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:11:42,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:11:42,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:11:42,542 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:11:42,542 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:11:42,543 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:11:42,544 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:11:42,544 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:11:42,545 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:11:42,546 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:11:42,546 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:11:42,547 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:11:42,547 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:11:42,547 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:11:42,548 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:11:42,548 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:11:42,549 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 12:11:42,560 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:11:42,561 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:11:42,561 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:11:42,561 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:11:42,562 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:11:42,562 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:11:42,562 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:11:42,563 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 12:11:42,563 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:11:42,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:11:42,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:11:42,564 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:11:42,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> e872a0dffbf376eb2d8b1e3516401a8dafe115a6 [2018-11-28 12:11:42,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:11:42,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:11:42,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:11:42,602 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:11:42,602 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:11:42,603 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/getNumbers2_false-valid-deref.c [2018-11-28 12:11:42,657 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/data/40c797452/2deb97b551e34bb592a05654da8bf8b2/FLAGea94ac078 [2018-11-28 12:11:43,008 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:11:43,009 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/sv-benchmarks/c/memsafety-ext3/getNumbers2_false-valid-deref.c [2018-11-28 12:11:43,014 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/data/40c797452/2deb97b551e34bb592a05654da8bf8b2/FLAGea94ac078 [2018-11-28 12:11:43,430 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/data/40c797452/2deb97b551e34bb592a05654da8bf8b2 [2018-11-28 12:11:43,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:11:43,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 12:11:43,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:11:43,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:11:43,439 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:11:43,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5274901a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43, skipping insertion in model container [2018-11-28 12:11:43,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:11:43,459 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:11:43,582 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:11:43,591 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:11:43,604 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:11:43,616 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:11:43,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43 WrapperNode [2018-11-28 12:11:43,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:11:43,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:11:43,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:11:43,617 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:11:43,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... [2018-11-28 12:11:43,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:11:43,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:11:43,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:11:43,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:11:43,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:11:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:11:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-28 12:11:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2018-11-28 12:11:43,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:11:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:11:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:11:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-28 12:11:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:11:43,898 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:11:43,899 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 12:11:43,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:11:43 BoogieIcfgContainer [2018-11-28 12:11:43,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:11:43,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:11:43,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:11:43,903 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:11:43,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:11:43" (1/3) ... [2018-11-28 12:11:43,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f94205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:11:43, skipping insertion in model container [2018-11-28 12:11:43,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:11:43" (2/3) ... [2018-11-28 12:11:43,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f94205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:11:43, skipping insertion in model container [2018-11-28 12:11:43,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:11:43" (3/3) ... [2018-11-28 12:11:43,907 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers2_false-valid-deref.c [2018-11-28 12:11:43,917 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:11:43,926 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 12:11:43,942 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 12:11:43,967 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:11:43,967 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:11:43,967 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 12:11:43,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:11:43,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:11:43,968 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:11:43,968 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:11:43,968 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:11:43,968 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:11:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-11-28 12:11:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:11:43,991 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:43,992 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:43,993 INFO L423 AbstractCegarLoop]: === Iteration 1 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:43,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash -262167437, now seen corresponding path program 1 times [2018-11-28 12:11:44,001 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:44,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:44,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:44,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:44,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:44,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:11:44,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:11:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:11:44,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:44,275 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2018-11-28 12:11:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:44,385 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2018-11-28 12:11:44,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:11:44,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-28 12:11:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:44,394 INFO L225 Difference]: With dead ends: 43 [2018-11-28 12:11:44,394 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 12:11:44,396 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 12:11:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-11-28 12:11:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 12:11:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-11-28 12:11:44,426 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2018-11-28 12:11:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:44,427 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-11-28 12:11:44,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:11:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-11-28 12:11:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:11:44,427 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:44,428 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:44,428 INFO L423 AbstractCegarLoop]: === Iteration 2 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:44,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:44,428 INFO L82 PathProgramCache]: Analyzing trace with hash -262167438, now seen corresponding path program 1 times [2018-11-28 12:11:44,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:44,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:44,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:44,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:44,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:44,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:11:44,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:11:44,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:11:44,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:11:44,479 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 3 states. [2018-11-28 12:11:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:44,514 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-28 12:11:44,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:11:44,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 12:11:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:44,515 INFO L225 Difference]: With dead ends: 37 [2018-11-28 12:11:44,516 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 12:11:44,516 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:11:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 12:11:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 12:11:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 12:11:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-28 12:11:44,519 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 10 [2018-11-28 12:11:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:44,520 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-28 12:11:44,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:11:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-28 12:11:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 12:11:44,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:44,520 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:44,521 INFO L423 AbstractCegarLoop]: === Iteration 3 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:44,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1979581628, now seen corresponding path program 1 times [2018-11-28 12:11:44,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:44,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:44,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:44,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:44,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:44,649 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:44,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:44,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:44,713 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-28 12:11:44,714 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:44,729 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:11:44,729 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 12:11:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:44,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:44,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-28 12:11:44,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:11:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:11:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:11:44,814 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2018-11-28 12:11:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:44,920 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-11-28 12:11:44,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:11:44,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-11-28 12:11:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:44,922 INFO L225 Difference]: With dead ends: 41 [2018-11-28 12:11:44,922 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 12:11:44,923 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:11:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 12:11:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 12:11:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 12:11:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-28 12:11:44,927 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 13 [2018-11-28 12:11:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:44,928 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-28 12:11:44,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:11:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-28 12:11:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 12:11:44,929 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:44,929 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:44,930 INFO L423 AbstractCegarLoop]: === Iteration 4 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:44,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:44,930 INFO L82 PathProgramCache]: Analyzing trace with hash 974975319, now seen corresponding path program 1 times [2018-11-28 12:11:44,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:44,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:44,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:44,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:45,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:45,009 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:45,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:45,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:45,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:45,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 12:11:45,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:11:45,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:11:45,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:11:45,078 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 7 states. [2018-11-28 12:11:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:45,108 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-11-28 12:11:45,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:11:45,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-28 12:11:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:45,109 INFO L225 Difference]: With dead ends: 46 [2018-11-28 12:11:45,109 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 12:11:45,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:11:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 12:11:45,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-11-28 12:11:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 12:11:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-11-28 12:11:45,114 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 24 [2018-11-28 12:11:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:45,114 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-11-28 12:11:45,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:11:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-11-28 12:11:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 12:11:45,115 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:45,116 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:45,116 INFO L423 AbstractCegarLoop]: === Iteration 5 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:45,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1645381224, now seen corresponding path program 2 times [2018-11-28 12:11:45,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:45,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:45,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:45,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:45,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:45,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:45,188 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:45,201 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:11:45,216 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 12:11:45,216 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:45,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:45,233 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-28 12:11:45,239 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:45,253 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 12:11:45,254 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 12:11:45,274 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:11:45,289 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:11:45,290 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:9, output treesize:21 [2018-11-28 12:11:45,349 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:45,350 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:45,351 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2018-11-28 12:11:45,352 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:45,368 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:45,369 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:45,372 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:45,381 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2018-11-28 12:11:45,382 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 12:11:45,414 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-28 12:11:45,414 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:43, output treesize:54 [2018-11-28 12:11:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 12:11:45,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:11:45,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2018-11-28 12:11:45,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:11:45,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:11:45,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:11:45,471 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 11 states. [2018-11-28 12:11:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:45,731 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2018-11-28 12:11:45,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:11:45,732 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-28 12:11:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:45,732 INFO L225 Difference]: With dead ends: 48 [2018-11-28 12:11:45,732 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 12:11:45,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2018-11-28 12:11:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 12:11:45,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-11-28 12:11:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 12:11:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-11-28 12:11:45,736 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 27 [2018-11-28 12:11:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:45,736 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-11-28 12:11:45,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:11:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-11-28 12:11:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 12:11:45,737 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:45,737 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:45,737 INFO L423 AbstractCegarLoop]: === Iteration 6 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:45,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2109770680, now seen corresponding path program 1 times [2018-11-28 12:11:45,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:45,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:45,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:45,738 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:45,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:45,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:45,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:45,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:45,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:45,886 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:45,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 12:11:45,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:11:45,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:11:45,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:11:45,888 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 9 states. [2018-11-28 12:11:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:45,937 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-28 12:11:45,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:11:45,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-11-28 12:11:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:45,939 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:11:45,939 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 12:11:45,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:11:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 12:11:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2018-11-28 12:11:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 12:11:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-11-28 12:11:45,944 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 30 [2018-11-28 12:11:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:45,944 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-11-28 12:11:45,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:11:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-11-28 12:11:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 12:11:45,945 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:45,945 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:45,946 INFO L423 AbstractCegarLoop]: === Iteration 7 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:45,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1648603127, now seen corresponding path program 2 times [2018-11-28 12:11:45,946 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:45,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:45,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:45,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:45,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:46,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:46,027 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:46,040 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:11:46,063 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 12:11:46,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:46,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:46,069 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-28 12:11:46,070 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:46,078 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-28 12:11:46,081 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,089 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 15 [2018-11-28 12:11:46,089 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-28 12:11:46,099 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:11:46,116 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:11:46,117 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:19, output treesize:37 [2018-11-28 12:11:46,213 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,215 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 36 [2018-11-28 12:11:46,215 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:46,247 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,248 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2018-11-28 12:11:46,249 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:46,278 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,279 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,279 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2018-11-28 12:11:46,280 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:46,302 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,303 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,304 INFO L701 Elim1Store]: detected not equals via solver [2018-11-28 12:11:46,305 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2018-11-28 12:11:46,306 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:46,324 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-28 12:11:46,324 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:65, output treesize:50 [2018-11-28 12:11:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-11-28 12:11:46,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:11:46,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2018-11-28 12:11:46,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 12:11:46,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 12:11:46,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:11:46,387 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 14 states. [2018-11-28 12:11:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:46,760 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-11-28 12:11:46,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:11:46,760 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-11-28 12:11:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:46,761 INFO L225 Difference]: With dead ends: 54 [2018-11-28 12:11:46,761 INFO L226 Difference]: Without dead ends: 54 [2018-11-28 12:11:46,762 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2018-11-28 12:11:46,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-28 12:11:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2018-11-28 12:11:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 12:11:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2018-11-28 12:11:46,766 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 33 [2018-11-28 12:11:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:46,767 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2018-11-28 12:11:46,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 12:11:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2018-11-28 12:11:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 12:11:46,767 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:46,768 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:46,768 INFO L423 AbstractCegarLoop]: === Iteration 8 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:46,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1833114438, now seen corresponding path program 1 times [2018-11-28 12:11:46,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:46,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:46,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:46,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:46,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-28 12:11:46,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:11:46,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:11:46,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:11:46,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:11:46,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:11:46,803 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 3 states. [2018-11-28 12:11:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:46,813 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-28 12:11:46,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:11:46,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-28 12:11:46,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:46,814 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:11:46,814 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 12:11:46,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:11:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 12:11:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-28 12:11:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-28 12:11:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-11-28 12:11:46,818 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 37 [2018-11-28 12:11:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:46,818 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-11-28 12:11:46,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:11:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-11-28 12:11:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 12:11:46,819 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:46,819 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:46,819 INFO L423 AbstractCegarLoop]: === Iteration 9 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:46,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1833114437, now seen corresponding path program 1 times [2018-11-28 12:11:46,820 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:46,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:46,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:46,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:46,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:46,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:46,900 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:46,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:46,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:46,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:46,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 12:11:46,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:11:46,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:11:46,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:11:46,956 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2018-11-28 12:11:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:46,984 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2018-11-28 12:11:46,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 12:11:46,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-11-28 12:11:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:46,985 INFO L225 Difference]: With dead ends: 56 [2018-11-28 12:11:46,985 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 12:11:46,985 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:11:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 12:11:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2018-11-28 12:11:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 12:11:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-11-28 12:11:46,989 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 37 [2018-11-28 12:11:46,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:46,989 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-11-28 12:11:46,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:11:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-11-28 12:11:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 12:11:46,990 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:46,990 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:46,990 INFO L423 AbstractCegarLoop]: === Iteration 10 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:46,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:46,991 INFO L82 PathProgramCache]: Analyzing trace with hash -688139446, now seen corresponding path program 2 times [2018-11-28 12:11:46,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:46,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:46,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:46,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:46,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:11:47,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:47,077 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:47,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:11:47,109 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-28 12:11:47,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:47,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:47,121 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-28 12:11:47,121 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:11:47,126 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:11:47,126 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-28 12:11:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-28 12:11:47,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:11:47,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2018-11-28 12:11:47,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:11:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:11:47,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:11:47,172 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 13 states. [2018-11-28 12:11:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:47,247 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2018-11-28 12:11:47,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 12:11:47,247 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-28 12:11:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:47,248 INFO L225 Difference]: With dead ends: 58 [2018-11-28 12:11:47,248 INFO L226 Difference]: Without dead ends: 58 [2018-11-28 12:11:47,248 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:11:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-28 12:11:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2018-11-28 12:11:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 12:11:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2018-11-28 12:11:47,252 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 40 [2018-11-28 12:11:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:47,253 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2018-11-28 12:11:47,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:11:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2018-11-28 12:11:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-28 12:11:47,254 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:47,254 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:47,254 INFO L423 AbstractCegarLoop]: === Iteration 11 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:47,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:47,254 INFO L82 PathProgramCache]: Analyzing trace with hash 71279954, now seen corresponding path program 1 times [2018-11-28 12:11:47,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:47,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:47,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:47,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 12:11:47,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:47,334 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:47,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:47,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 12:11:47,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:47,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 12:11:47,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:11:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:11:47,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:11:47,398 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 13 states. [2018-11-28 12:11:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:47,435 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2018-11-28 12:11:47,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 12:11:47,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2018-11-28 12:11:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:47,436 INFO L225 Difference]: With dead ends: 59 [2018-11-28 12:11:47,436 INFO L226 Difference]: Without dead ends: 59 [2018-11-28 12:11:47,437 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:11:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-28 12:11:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-28 12:11:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 12:11:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-11-28 12:11:47,440 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 51 [2018-11-28 12:11:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:47,440 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-11-28 12:11:47,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:11:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-11-28 12:11:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-28 12:11:47,441 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:47,441 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:47,441 INFO L423 AbstractCegarLoop]: === Iteration 12 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:47,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash 844524961, now seen corresponding path program 2 times [2018-11-28 12:11:47,442 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:47,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:47,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:47,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:47,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:47,470 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:47,486 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:11:47,520 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:11:47,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:47,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:47,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:47,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-28 12:11:47,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:11:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:11:47,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:47,563 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 5 states. [2018-11-28 12:11:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:47,577 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2018-11-28 12:11:47,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:11:47,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2018-11-28 12:11:47,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:47,578 INFO L225 Difference]: With dead ends: 68 [2018-11-28 12:11:47,579 INFO L226 Difference]: Without dead ends: 68 [2018-11-28 12:11:47,579 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:11:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-28 12:11:47,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-11-28 12:11:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 12:11:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2018-11-28 12:11:47,582 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 54 [2018-11-28 12:11:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:47,583 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2018-11-28 12:11:47,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:11:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2018-11-28 12:11:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-28 12:11:47,584 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:47,584 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:47,584 INFO L423 AbstractCegarLoop]: === Iteration 13 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:47,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1486456989, now seen corresponding path program 3 times [2018-11-28 12:11:47,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:47,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:47,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:47,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:47,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:47,635 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:47,649 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:11:47,669 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 12:11:47,669 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:47,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:47,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:47,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 12:11:47,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:11:47,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:11:47,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:11:47,711 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 6 states. [2018-11-28 12:11:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:47,733 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2018-11-28 12:11:47,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:11:47,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2018-11-28 12:11:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:47,735 INFO L225 Difference]: With dead ends: 73 [2018-11-28 12:11:47,735 INFO L226 Difference]: Without dead ends: 73 [2018-11-28 12:11:47,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:11:47,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-28 12:11:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-11-28 12:11:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-28 12:11:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-11-28 12:11:47,738 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 59 [2018-11-28 12:11:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:47,738 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-11-28 12:11:47,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:11:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-11-28 12:11:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-28 12:11:47,739 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:47,739 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:47,739 INFO L423 AbstractCegarLoop]: === Iteration 14 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:47,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1338250463, now seen corresponding path program 4 times [2018-11-28 12:11:47,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:47,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:47,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:47,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:47,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:47,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:47,806 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 12:11:47,857 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 12:11:47,857 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:47,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:47,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:47,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 12:11:47,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:11:47,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:11:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:11:47,925 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 7 states. [2018-11-28 12:11:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:47,947 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2018-11-28 12:11:47,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:11:47,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-11-28 12:11:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:47,949 INFO L225 Difference]: With dead ends: 78 [2018-11-28 12:11:47,949 INFO L226 Difference]: Without dead ends: 78 [2018-11-28 12:11:47,949 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:11:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-28 12:11:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-11-28 12:11:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-28 12:11:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2018-11-28 12:11:47,952 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 64 [2018-11-28 12:11:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:47,954 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2018-11-28 12:11:47,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:11:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2018-11-28 12:11:47,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-28 12:11:47,955 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:47,955 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:47,955 INFO L423 AbstractCegarLoop]: === Iteration 15 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:47,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash -368674019, now seen corresponding path program 5 times [2018-11-28 12:11:47,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:47,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:47,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:47,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:48,013 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:48,038 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 12:11:48,183 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2018-11-28 12:11:48,183 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:48,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:48,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 12:11:48,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 12:11:48,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 12:11:48,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:11:48,216 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 8 states. [2018-11-28 12:11:48,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:48,243 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2018-11-28 12:11:48,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:11:48,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2018-11-28 12:11:48,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:48,244 INFO L225 Difference]: With dead ends: 83 [2018-11-28 12:11:48,244 INFO L226 Difference]: Without dead ends: 83 [2018-11-28 12:11:48,244 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:11:48,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-28 12:11:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-11-28 12:11:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 12:11:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-11-28 12:11:48,247 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2018-11-28 12:11:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:48,248 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-11-28 12:11:48,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 12:11:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-11-28 12:11:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 12:11:48,249 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:48,249 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:48,249 INFO L423 AbstractCegarLoop]: === Iteration 16 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:48,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:48,250 INFO L82 PathProgramCache]: Analyzing trace with hash -243103583, now seen corresponding path program 6 times [2018-11-28 12:11:48,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:48,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:48,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:48,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:48,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:48,311 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:48,321 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 12:11:48,427 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-11-28 12:11:48,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:48,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:48,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2018-11-28 12:11:48,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 12:11:48,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 12:11:48,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-11-28 12:11:48,545 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 17 states. [2018-11-28 12:11:48,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:48,625 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2018-11-28 12:11:48,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:11:48,626 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2018-11-28 12:11:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:48,626 INFO L225 Difference]: With dead ends: 88 [2018-11-28 12:11:48,627 INFO L226 Difference]: Without dead ends: 88 [2018-11-28 12:11:48,627 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2018-11-28 12:11:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-28 12:11:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-11-28 12:11:48,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-28 12:11:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2018-11-28 12:11:48,631 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 74 [2018-11-28 12:11:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:48,631 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2018-11-28 12:11:48,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 12:11:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2018-11-28 12:11:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-28 12:11:48,632 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:48,632 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:48,632 INFO L423 AbstractCegarLoop]: === Iteration 17 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:48,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1204178333, now seen corresponding path program 7 times [2018-11-28 12:11:48,633 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:48,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:48,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:48,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:48,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:48,690 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:48,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:48,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:48,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 12:11:48,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 12:11:48,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 12:11:48,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:11:48,780 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 10 states. [2018-11-28 12:11:48,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:48,816 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2018-11-28 12:11:48,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:11:48,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2018-11-28 12:11:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:48,821 INFO L225 Difference]: With dead ends: 93 [2018-11-28 12:11:48,821 INFO L226 Difference]: Without dead ends: 93 [2018-11-28 12:11:48,822 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:11:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-28 12:11:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-11-28 12:11:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-28 12:11:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2018-11-28 12:11:48,826 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2018-11-28 12:11:48,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:48,827 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2018-11-28 12:11:48,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 12:11:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2018-11-28 12:11:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-28 12:11:48,828 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:48,828 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:48,830 INFO L423 AbstractCegarLoop]: === Iteration 18 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:48,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:48,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2025699807, now seen corresponding path program 8 times [2018-11-28 12:11:48,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:48,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:48,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:48,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:11:48,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:48,905 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:48,922 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:11:48,953 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:11:48,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:48,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:48,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:48,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 12:11:48,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:11:48,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:11:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:11:48,988 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 11 states. [2018-11-28 12:11:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:49,018 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2018-11-28 12:11:49,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 12:11:49,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2018-11-28 12:11:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:49,019 INFO L225 Difference]: With dead ends: 98 [2018-11-28 12:11:49,019 INFO L226 Difference]: Without dead ends: 98 [2018-11-28 12:11:49,019 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:11:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-28 12:11:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-11-28 12:11:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 12:11:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2018-11-28 12:11:49,021 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 84 [2018-11-28 12:11:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:49,022 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2018-11-28 12:11:49,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:11:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2018-11-28 12:11:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-28 12:11:49,023 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:49,023 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:49,023 INFO L423 AbstractCegarLoop]: === Iteration 19 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:49,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash -809435107, now seen corresponding path program 9 times [2018-11-28 12:11:49,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:49,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:49,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:49,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:49,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:49,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:49,091 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/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 [2018-11-28 12:11:49,106 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:11:49,260 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-28 12:11:49,261 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:49,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:49,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:49,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-28 12:11:49,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 12:11:49,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 12:11:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 12:11:49,293 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 12 states. [2018-11-28 12:11:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:49,328 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2018-11-28 12:11:49,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:11:49,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2018-11-28 12:11:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:49,329 INFO L225 Difference]: With dead ends: 103 [2018-11-28 12:11:49,329 INFO L226 Difference]: Without dead ends: 103 [2018-11-28 12:11:49,329 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 12:11:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-28 12:11:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-11-28 12:11:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-28 12:11:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-11-28 12:11:49,332 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 89 [2018-11-28 12:11:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:49,333 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-11-28 12:11:49,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 12:11:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-11-28 12:11:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-28 12:11:49,334 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:49,334 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:49,334 INFO L423 AbstractCegarLoop]: === Iteration 20 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:49,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:49,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2070731871, now seen corresponding path program 10 times [2018-11-28 12:11:49,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:49,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:49,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:49,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:49,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:11:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:49,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:11:49,423 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:11:49,432 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 12:11:49,604 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 12:11:49,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:11:49,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:11:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-28 12:11:49,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:11:49,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 12:11:49,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:11:49,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:11:49,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:11:49,654 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 13 states. [2018-11-28 12:11:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:11:49,695 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2018-11-28 12:11:49,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 12:11:49,695 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2018-11-28 12:11:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:11:49,696 INFO L225 Difference]: With dead ends: 104 [2018-11-28 12:11:49,696 INFO L226 Difference]: Without dead ends: 104 [2018-11-28 12:11:49,696 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:11:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-28 12:11:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-11-28 12:11:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-28 12:11:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-11-28 12:11:49,698 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2018-11-28 12:11:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:11:49,699 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-11-28 12:11:49,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:11:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-11-28 12:11:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-28 12:11:49,700 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:11:49,700 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:11:49,700 INFO L423 AbstractCegarLoop]: === Iteration 21 === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-28 12:11:49,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:11:49,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1646357859, now seen corresponding path program 11 times [2018-11-28 12:11:49,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:11:49,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:11:49,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:49,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:11:49,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:11:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:11:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:11:49,838 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:11:49,861 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 45 could not be translated for associated CType ARRAY#_10_~INT# [2018-11-28 12:11:49,862 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# [2018-11-28 12:11:49,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:11:49 BoogieIcfgContainer [2018-11-28 12:11:49,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:11:49,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:11:49,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:11:49,882 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:11:49,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:11:43" (3/4) ... [2018-11-28 12:11:49,885 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 12:11:49,891 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# [2018-11-28 12:11:49,892 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 45 could not be translated for associated CType ARRAY#_10_~INT# [2018-11-28 12:11:49,945 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d04a97c5-cfed-4130-840e-4ea6df21810a/bin-2019/uautomizer/witness.graphml [2018-11-28 12:11:49,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:11:49,946 INFO L168 Benchmark]: Toolchain (without parser) took 6512.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 953.3 MB in the beginning and 918.1 MB in the end (delta: 35.2 MB). Peak memory consumption was 214.5 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:49,948 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:11:49,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.04 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:49,949 INFO L168 Benchmark]: Boogie Preprocessor took 73.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:49,949 INFO L168 Benchmark]: RCFGBuilder took 208.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:49,949 INFO L168 Benchmark]: TraceAbstraction took 5981.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.1 GB in the beginning and 923.2 MB in the end (delta: 189.4 MB). Peak memory consumption was 237.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:49,950 INFO L168 Benchmark]: Witness Printer took 63.77 ms. Allocated memory is still 1.2 GB. Free memory was 923.2 MB in the beginning and 918.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:11:49,951 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 182.04 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5981.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.1 GB in the beginning and 923.2 MB in the end (delta: 189.4 MB). Peak memory consumption was 237.1 MB. Max. memory is 11.5 GB. * Witness Printer took 63.77 ms. Allocated memory is still 1.2 GB. Free memory was 923.2 MB in the beginning and 918.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 45 could not be translated for associated CType ARRAY#_10_~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 44 could not be translated for associated CType ARRAY#_10_~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 45 could not be translated for associated CType ARRAY#_10_~INT# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1] int array[10]; VAL [\old(array)=null, \old(array)=null, array={42:0}] [L25] CALL, EXPR getNumbers2() VAL [array={42:0}] [L13] CALL, EXPR getNumbers() VAL [array={42:0}] [L5] int i = 0; VAL [array={42:0}, i=0] [L5] COND TRUE i < 10 VAL [array={42:0}, i=0] [L6] array[i] = i VAL [array={42:0}, i=0] [L5] ++i VAL [array={42:0}, i=1] [L5] COND TRUE i < 10 VAL [array={42:0}, i=1] [L6] array[i] = i VAL [array={42:0}, i=1] [L5] ++i VAL [array={42:0}, i=2] [L5] COND TRUE i < 10 VAL [array={42:0}, i=2] [L6] array[i] = i VAL [array={42:0}, i=2] [L5] ++i VAL [array={42:0}, i=3] [L5] COND TRUE i < 10 VAL [array={42:0}, i=3] [L6] array[i] = i VAL [array={42:0}, i=3] [L5] ++i VAL [array={42:0}, i=4] [L5] COND TRUE i < 10 VAL [array={42:0}, i=4] [L6] array[i] = i VAL [array={42:0}, i=4] [L5] ++i VAL [array={42:0}, i=5] [L5] COND TRUE i < 10 VAL [array={42:0}, i=5] [L6] array[i] = i VAL [array={42:0}, i=5] [L5] ++i VAL [array={42:0}, i=6] [L5] COND TRUE i < 10 VAL [array={42:0}, i=6] [L6] array[i] = i VAL [array={42:0}, i=6] [L5] ++i VAL [array={42:0}, i=7] [L5] COND TRUE i < 10 VAL [array={42:0}, i=7] [L6] array[i] = i VAL [array={42:0}, i=7] [L5] ++i VAL [array={42:0}, i=8] [L5] COND TRUE i < 10 VAL [array={42:0}, i=8] [L6] array[i] = i VAL [array={42:0}, i=8] [L5] ++i VAL [array={42:0}, i=9] [L5] COND TRUE i < 10 VAL [array={42:0}, i=9] [L6] array[i] = i VAL [array={42:0}, i=9] [L5] ++i VAL [array={42:0}, i=10] [L5] COND FALSE !(i < 10) VAL [array={42:0}, i=10] [L9] return array; VAL [\result={42:0}, array={42:0}, i=10] [L13] RET, EXPR getNumbers() VAL [array={42:0}, getNumbers()={42:0}] [L13] int* numbers = getNumbers(); [L15] int numbers2[10]; [L17] int i = 0; VAL [array={42:0}, i=0, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=0, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=0, numbers={42:0}, numbers2={46:0}, numbers[i]=0] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=0, numbers={42:0}, numbers2={46:0}, numbers[i]=0] [L17] ++i VAL [array={42:0}, i=1, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=1, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=1, numbers={42:0}, numbers2={46:0}, numbers[i]=1] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=1, numbers={42:0}, numbers2={46:0}, numbers[i]=1] [L17] ++i VAL [array={42:0}, i=2, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=2, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=2, numbers={42:0}, numbers2={46:0}, numbers[i]=2] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=2, numbers={42:0}, numbers2={46:0}, numbers[i]=2] [L17] ++i VAL [array={42:0}, i=3, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=3, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=3, numbers={42:0}, numbers2={46:0}, numbers[i]=3] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=3, numbers={42:0}, numbers2={46:0}, numbers[i]=3] [L17] ++i VAL [array={42:0}, i=4, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=4, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=4, numbers={42:0}, numbers2={46:0}, numbers[i]=4] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=4, numbers={42:0}, numbers2={46:0}, numbers[i]=4] [L17] ++i VAL [array={42:0}, i=5, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=5, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=5, numbers={42:0}, numbers2={46:0}, numbers[i]=5] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=5, numbers={42:0}, numbers2={46:0}, numbers[i]=5] [L17] ++i VAL [array={42:0}, i=6, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=6, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=6, numbers={42:0}, numbers2={46:0}, numbers[i]=6] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=6, numbers={42:0}, numbers2={46:0}, numbers[i]=6] [L17] ++i VAL [array={42:0}, i=7, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=7, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=7, numbers={42:0}, numbers2={46:0}, numbers[i]=7] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=7, numbers={42:0}, numbers2={46:0}, numbers[i]=7] [L17] ++i VAL [array={42:0}, i=8, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=8, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=8, numbers={42:0}, numbers2={46:0}, numbers[i]=8] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=8, numbers={42:0}, numbers2={46:0}, numbers[i]=8] [L17] ++i VAL [array={42:0}, i=9, numbers={42:0}, numbers2={46:0}] [L17] COND TRUE i < 10 VAL [array={42:0}, i=9, numbers={42:0}, numbers2={46:0}] [L18] EXPR numbers[i] VAL [array={42:0}, i=9, numbers={42:0}, numbers2={46:0}, numbers[i]=9] [L18] numbers2[i] = numbers[i] VAL [array={42:0}, i=9, numbers={42:0}, numbers2={46:0}, numbers[i]=9] [L17] ++i VAL [array={42:0}, i=10, numbers={42:0}, numbers2={46:0}] [L17] COND FALSE !(i < 10) VAL [array={42:0}, i=10, numbers={42:0}, numbers2={46:0}] [L21] return numbers2; [L21] return numbers2; VAL [\result={46:0}, array={42:0}, i=10, numbers={42:0}] [L25] RET, EXPR getNumbers2() VAL [array={42:0}, getNumbers2()={46:0}] [L25] int *numbers = getNumbers2(); [L26] numbers[0] = 100 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 9 error locations. UNSAFE Result, 5.9s OverallTime, 21 OverallIterations, 10 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 531 SDtfs, 537 SDslu, 2219 SDs, 0 SdLazy, 986 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 908 SyntacticMatches, 3 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 46 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1998 NumberOfCodeBlocks, 1914 NumberOfCodeBlocksAsserted, 72 NumberOfCheckSat, 1862 ConstructedInterpolants, 4 QuantifiedInterpolants, 277817 SizeOfPredicates, 27 NumberOfNonLiveVariables, 3359 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 2848/4774 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...