./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 04:45:31,488 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:31,490 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:31,499 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:31,499 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:31,500 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:31,501 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:31,503 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:31,507 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:31,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:31,508 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:31,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:31,509 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:31,510 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:31,511 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:31,511 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:31,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:31,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:31,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:31,517 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:31,518 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:31,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:31,520 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:31,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:31,521 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:31,522 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:31,522 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:31,523 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:31,524 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:31,525 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:31,525 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:31,526 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:31,526 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:31,526 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:31,527 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:31,527 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:31,528 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:31,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:31,539 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:31,539 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:31,540 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:31,540 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:31,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:31,540 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:31,541 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:31,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:31,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:31,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:31,541 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:31,542 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:31,542 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:31,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:31,542 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:31,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:31,542 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:31,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:31,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:31,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:31,543 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:31,543 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:31,543 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:31,543 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:31,543 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_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 -> 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 [2018-10-27 04:45:31,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:31,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:31,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:31,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:31,584 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:31,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-10-27 04:45:31,644 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/data/6f5543bed/789a8870b75d44e4aea8a085c7dddaff/FLAG9c98cecd4 [2018-10-27 04:45:32,013 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:32,014 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-10-27 04:45:32,020 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/data/6f5543bed/789a8870b75d44e4aea8a085c7dddaff/FLAG9c98cecd4 [2018-10-27 04:45:32,033 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/data/6f5543bed/789a8870b75d44e4aea8a085c7dddaff [2018-10-27 04:45:32,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:32,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:32,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:32,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:32,040 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:32,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6e8184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32, skipping insertion in model container [2018-10-27 04:45:32,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:32,067 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:32,176 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:32,182 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:32,197 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:32,210 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:32,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32 WrapperNode [2018-10-27 04:45:32,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:32,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:32,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:32,211 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:32,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... [2018-10-27 04:45:32,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:32,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:32,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:32,239 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:32,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-27 04:45:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:32,835 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:32,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:32 BoogieIcfgContainer [2018-10-27 04:45:32,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:32,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:32,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:32,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:32,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:32" (1/3) ... [2018-10-27 04:45:32,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7502f811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:32, skipping insertion in model container [2018-10-27 04:45:32,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:32" (2/3) ... [2018-10-27 04:45:32,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7502f811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:32, skipping insertion in model container [2018-10-27 04:45:32,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:32" (3/3) ... [2018-10-27 04:45:32,842 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-10-27 04:45:32,850 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:32,859 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-10-27 04:45:32,874 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-10-27 04:45:32,901 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:32,902 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:32,902 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:32,902 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:32,902 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:32,902 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:32,902 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:32,902 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:32,902 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-10-27 04:45:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 04:45:32,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:32,937 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:32,940 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:32,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:32,948 INFO L82 PathProgramCache]: Analyzing trace with hash 171629076, now seen corresponding path program 1 times [2018-10-27 04:45:32,949 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:32,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:32,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:32,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:32,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:33,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:33,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:33,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 04:45:33,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 04:45:33,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:33,094 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2018-10-27 04:45:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:33,112 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-10-27 04:45:33,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 04:45:33,113 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-10-27 04:45:33,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:33,125 INFO L225 Difference]: With dead ends: 55 [2018-10-27 04:45:33,126 INFO L226 Difference]: Without dead ends: 52 [2018-10-27 04:45:33,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-27 04:45:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-27 04:45:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-27 04:45:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2018-10-27 04:45:33,160 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2018-10-27 04:45:33,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:33,160 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2018-10-27 04:45:33,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 04:45:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2018-10-27 04:45:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-27 04:45:33,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:33,161 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:33,161 INFO L424 AbstractCegarLoop]: === Iteration 2 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:33,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:33,162 INFO L82 PathProgramCache]: Analyzing trace with hash 583043534, now seen corresponding path program 1 times [2018-10-27 04:45:33,162 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:33,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:33,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:33,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:33,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 04:45:33,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 04:45:33,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:33,228 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 3 states. [2018-10-27 04:45:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:33,325 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-10-27 04:45:33,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 04:45:33,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-27 04:45:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:33,327 INFO L225 Difference]: With dead ends: 75 [2018-10-27 04:45:33,327 INFO L226 Difference]: Without dead ends: 75 [2018-10-27 04:45:33,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-27 04:45:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2018-10-27 04:45:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-27 04:45:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-10-27 04:45:33,338 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 16 [2018-10-27 04:45:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:33,338 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-10-27 04:45:33,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 04:45:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-10-27 04:45:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 04:45:33,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:33,339 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:33,339 INFO L424 AbstractCegarLoop]: === Iteration 3 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:33,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:33,340 INFO L82 PathProgramCache]: Analyzing trace with hash 986062039, now seen corresponding path program 1 times [2018-10-27 04:45:33,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:33,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:33,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:33,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:33,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:33,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:33,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 04:45:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 04:45:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:33,391 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 3 states. [2018-10-27 04:45:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:33,522 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-27 04:45:33,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 04:45:33,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-27 04:45:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:33,527 INFO L225 Difference]: With dead ends: 67 [2018-10-27 04:45:33,527 INFO L226 Difference]: Without dead ends: 67 [2018-10-27 04:45:33,527 INFO L605 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 [2018-10-27 04:45:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-27 04:45:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2018-10-27 04:45:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-27 04:45:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2018-10-27 04:45:33,532 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 17 [2018-10-27 04:45:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:33,533 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2018-10-27 04:45:33,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 04:45:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2018-10-27 04:45:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:45:33,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:33,534 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:33,536 INFO L424 AbstractCegarLoop]: === Iteration 4 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:33,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:33,536 INFO L82 PathProgramCache]: Analyzing trace with hash 503152184, now seen corresponding path program 1 times [2018-10-27 04:45:33,537 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:33,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:33,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:33,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:33,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:33,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 04:45:33,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 04:45:33,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 04:45:33,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-27 04:45:33,675 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 6 states. [2018-10-27 04:45:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:33,934 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-10-27 04:45:33,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 04:45:33,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-27 04:45:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:33,937 INFO L225 Difference]: With dead ends: 61 [2018-10-27 04:45:33,937 INFO L226 Difference]: Without dead ends: 61 [2018-10-27 04:45:33,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 04:45:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-27 04:45:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-10-27 04:45:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-27 04:45:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2018-10-27 04:45:33,942 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 18 [2018-10-27 04:45:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:33,942 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2018-10-27 04:45:33,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 04:45:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2018-10-27 04:45:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:45:33,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:33,943 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:33,943 INFO L424 AbstractCegarLoop]: === Iteration 5 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:33,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:33,943 INFO L82 PathProgramCache]: Analyzing trace with hash 503152183, now seen corresponding path program 1 times [2018-10-27 04:45:33,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:33,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:33,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:33,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:34,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:34,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 04:45:34,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:34,026 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2018-10-27 04:45:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:34,128 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-10-27 04:45:34,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 04:45:34,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-10-27 04:45:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:34,129 INFO L225 Difference]: With dead ends: 57 [2018-10-27 04:45:34,129 INFO L226 Difference]: Without dead ends: 57 [2018-10-27 04:45:34,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 04:45:34,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-27 04:45:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-27 04:45:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-27 04:45:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2018-10-27 04:45:34,131 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 18 [2018-10-27 04:45:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:34,131 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2018-10-27 04:45:34,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2018-10-27 04:45:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 04:45:34,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:34,132 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:34,133 INFO L424 AbstractCegarLoop]: === Iteration 6 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:34,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:34,134 INFO L82 PathProgramCache]: Analyzing trace with hash -76843509, now seen corresponding path program 1 times [2018-10-27 04:45:34,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:34,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:34,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:34,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:34,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:34,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:34,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 04:45:34,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:34,225 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2018-10-27 04:45:34,474 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 04:45:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:34,532 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-10-27 04:45:34,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:34,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-10-27 04:45:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:34,535 INFO L225 Difference]: With dead ends: 63 [2018-10-27 04:45:34,535 INFO L226 Difference]: Without dead ends: 60 [2018-10-27 04:45:34,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 04:45:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-27 04:45:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-10-27 04:45:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-27 04:45:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-10-27 04:45:34,538 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 21 [2018-10-27 04:45:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:34,538 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-10-27 04:45:34,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-10-27 04:45:34,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 04:45:34,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:34,539 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:34,539 INFO L424 AbstractCegarLoop]: === Iteration 7 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:34,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:34,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2011119119, now seen corresponding path program 1 times [2018-10-27 04:45:34,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:34,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:34,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:34,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:34,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:34,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:34,651 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:34,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:34,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:34,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:34,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-27 04:45:34,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 04:45:34,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 04:45:34,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-27 04:45:34,737 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 9 states. [2018-10-27 04:45:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:34,865 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-10-27 04:45:34,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 04:45:34,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-10-27 04:45:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:34,869 INFO L225 Difference]: With dead ends: 67 [2018-10-27 04:45:34,869 INFO L226 Difference]: Without dead ends: 67 [2018-10-27 04:45:34,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-27 04:45:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-27 04:45:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-27 04:45:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-27 04:45:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2018-10-27 04:45:34,879 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 23 [2018-10-27 04:45:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:34,880 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2018-10-27 04:45:34,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 04:45:34,880 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2018-10-27 04:45:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 04:45:34,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:34,881 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:34,881 INFO L424 AbstractCegarLoop]: === Iteration 8 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:34,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:34,881 INFO L82 PathProgramCache]: Analyzing trace with hash -856954957, now seen corresponding path program 1 times [2018-10-27 04:45:34,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:34,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:34,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:34,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:34,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:35,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:35,103 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:35,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:35,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:35,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:35,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-27 04:45:35,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 04:45:35,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 04:45:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-27 04:45:35,326 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 12 states. [2018-10-27 04:45:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:35,514 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2018-10-27 04:45:35,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 04:45:35,527 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2018-10-27 04:45:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:35,528 INFO L225 Difference]: With dead ends: 80 [2018-10-27 04:45:35,528 INFO L226 Difference]: Without dead ends: 77 [2018-10-27 04:45:35,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2018-10-27 04:45:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-27 04:45:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2018-10-27 04:45:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-27 04:45:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2018-10-27 04:45:35,541 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 39 [2018-10-27 04:45:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:35,541 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2018-10-27 04:45:35,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 04:45:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2018-10-27 04:45:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-27 04:45:35,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:35,542 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:35,542 INFO L424 AbstractCegarLoop]: === Iteration 9 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:35,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash -522203413, now seen corresponding path program 2 times [2018-10-27 04:45:35,543 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:35,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:35,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:35,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:35,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:35,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:35,766 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:35,784 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 04:45:35,797 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:35,797 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:35,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:35,815 INFO L477 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 [2018-10-27 04:45:35,817 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:35,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:35,821 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-10-27 04:45:35,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-10-27 04:45:35,834 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:35,842 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:35,842 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-10-27 04:45:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-27 04:45:35,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:35,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-27 04:45:35,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 04:45:35,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 04:45:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 04:45:35,945 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 10 states. [2018-10-27 04:45:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:36,268 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2018-10-27 04:45:36,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 04:45:36,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2018-10-27 04:45:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:36,269 INFO L225 Difference]: With dead ends: 84 [2018-10-27 04:45:36,269 INFO L226 Difference]: Without dead ends: 81 [2018-10-27 04:45:36,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-10-27 04:45:36,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-27 04:45:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2018-10-27 04:45:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-27 04:45:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2018-10-27 04:45:36,275 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 45 [2018-10-27 04:45:36,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:36,275 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2018-10-27 04:45:36,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 04:45:36,275 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2018-10-27 04:45:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-27 04:45:36,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:36,278 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:36,278 INFO L424 AbstractCegarLoop]: === Iteration 10 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:36,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:36,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1147628580, now seen corresponding path program 1 times [2018-10-27 04:45:36,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:36,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:36,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:36,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 04:45:36,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:36,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:36,524 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:36,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:36,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:36,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:36,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-27 04:45:36,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 04:45:36,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 04:45:36,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-10-27 04:45:36,754 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 16 states. [2018-10-27 04:45:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:37,087 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2018-10-27 04:45:37,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 04:45:37,088 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2018-10-27 04:45:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:37,089 INFO L225 Difference]: With dead ends: 90 [2018-10-27 04:45:37,089 INFO L226 Difference]: Without dead ends: 87 [2018-10-27 04:45:37,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2018-10-27 04:45:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-27 04:45:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-10-27 04:45:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-27 04:45:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2018-10-27 04:45:37,100 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 51 [2018-10-27 04:45:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:37,100 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2018-10-27 04:45:37,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 04:45:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2018-10-27 04:45:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-27 04:45:37,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:37,101 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:37,102 INFO L424 AbstractCegarLoop]: === Iteration 11 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:37,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1801600860, now seen corresponding path program 2 times [2018-10-27 04:45:37,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:37,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:37,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:37,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:37,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:37,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:37,305 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:37,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 04:45:37,336 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:37,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:37,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:37,357 INFO L477 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 [2018-10-27 04:45:37,357 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:37,438 INFO L477 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 [2018-10-27 04:45:37,439 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:37,442 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:37,442 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-10-27 04:45:37,455 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:37,456 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:37,456 INFO L477 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 11 treesize of output 4 [2018-10-27 04:45:37,457 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:37,462 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:37,463 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 21 [2018-10-27 04:45:37,464 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:37,469 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:37,469 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2018-10-27 04:45:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-27 04:45:37,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:37,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2018-10-27 04:45:37,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 04:45:37,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 04:45:37,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-27 04:45:37,661 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 15 states. [2018-10-27 04:45:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:38,082 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2018-10-27 04:45:38,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 04:45:38,083 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-10-27 04:45:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:38,084 INFO L225 Difference]: With dead ends: 94 [2018-10-27 04:45:38,084 INFO L226 Difference]: Without dead ends: 91 [2018-10-27 04:45:38,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2018-10-27 04:45:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-27 04:45:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2018-10-27 04:45:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-27 04:45:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2018-10-27 04:45:38,088 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 57 [2018-10-27 04:45:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:38,088 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2018-10-27 04:45:38,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 04:45:38,088 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2018-10-27 04:45:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-27 04:45:38,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:38,092 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:38,092 INFO L424 AbstractCegarLoop]: === Iteration 12 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:38,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2128189257, now seen corresponding path program 1 times [2018-10-27 04:45:38,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:38,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:38,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:38,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 04:45:38,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-10-27 04:45:38,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:38,161 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:38,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:38,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 2 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:38,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:38,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11] total 13 [2018-10-27 04:45:38,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 04:45:38,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 04:45:38,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-10-27 04:45:38,637 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 13 states. [2018-10-27 04:45:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:38,779 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2018-10-27 04:45:38,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 04:45:38,779 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2018-10-27 04:45:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:38,780 INFO L225 Difference]: With dead ends: 134 [2018-10-27 04:45:38,780 INFO L226 Difference]: Without dead ends: 131 [2018-10-27 04:45:38,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-10-27 04:45:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-27 04:45:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2018-10-27 04:45:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-27 04:45:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2018-10-27 04:45:38,787 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 78 [2018-10-27 04:45:38,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:38,787 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2018-10-27 04:45:38,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 04:45:38,788 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2018-10-27 04:45:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 04:45:38,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:38,792 INFO L375 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:38,792 INFO L424 AbstractCegarLoop]: === Iteration 13 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:38,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1190725574, now seen corresponding path program 2 times [2018-10-27 04:45:38,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:38,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:38,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:38,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:38,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2018-10-27 04:45:39,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:39,079 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:39,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 04:45:39,124 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:39,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:39,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:39,603 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:39,604 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-27 04:45:39,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-27 04:45:39,608 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:39,612 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:39,615 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:39,615 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-10-27 04:45:39,808 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:39,809 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-27 04:45:39,820 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-27 04:45:39,821 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:39,833 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:39,836 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:39,836 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-10-27 04:45:39,933 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_~#b~0.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_~#b~0.base| 1))) (and (= (select |c_old(#valid)| |main_~#b~0.base|) 0) (= (select .cse0 |c_main_~#mask~0.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_~#mask~0.base| 1) |main_~#b~0.base| 0))))) is different from true [2018-10-27 04:45:39,949 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_~#b~0.base| Int) (|main_~#mask~0.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_~#b~0.base| 1))) (and (= (select |c_old(#valid)| |main_~#b~0.base|) 0) (= (select .cse0 |main_~#mask~0.base|) 0) (= |c_#valid| (store (store (store .cse0 |main_~#mask~0.base| 1) |main_~#b~0.base| 0) |main_~#mask~0.base| 0))))) is different from true [2018-10-27 04:45:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-10-27 04:45:40,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:40,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2018-10-27 04:45:40,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 04:45:40,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 04:45:40,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=55, Unknown=2, NotChecked=30, Total=110 [2018-10-27 04:45:40,081 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand 11 states. [2018-10-27 04:45:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,358 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2018-10-27 04:45:40,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 04:45:40,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 145 [2018-10-27 04:45:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,359 INFO L225 Difference]: With dead ends: 144 [2018-10-27 04:45:40,359 INFO L226 Difference]: Without dead ends: 120 [2018-10-27 04:45:40,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=256, Unknown=13, NotChecked=70, Total=420 [2018-10-27 04:45:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-10-27 04:45:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2018-10-27 04:45:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-27 04:45:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2018-10-27 04:45:40,362 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 145 [2018-10-27 04:45:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,363 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2018-10-27 04:45:40,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 04:45:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2018-10-27 04:45:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-27 04:45:40,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,365 INFO L375 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,365 INFO L424 AbstractCegarLoop]: === Iteration 14 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:40,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash -79499043, now seen corresponding path program 1 times [2018-10-27 04:45:40,366 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 04:45:40,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1866 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1839 trivial. 0 not checked. [2018-10-27 04:45:40,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:40,526 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:40,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:40,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1866 backedges. 852 proven. 184 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2018-10-27 04:45:40,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:40,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 16 [2018-10-27 04:45:40,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 04:45:40,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 04:45:40,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-10-27 04:45:40,774 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 16 states. [2018-10-27 04:45:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:40,932 INFO L93 Difference]: Finished difference Result 145 states and 151 transitions. [2018-10-27 04:45:40,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 04:45:40,933 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 219 [2018-10-27 04:45:40,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:40,934 INFO L225 Difference]: With dead ends: 145 [2018-10-27 04:45:40,934 INFO L226 Difference]: Without dead ends: 142 [2018-10-27 04:45:40,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2018-10-27 04:45:40,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-27 04:45:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 130. [2018-10-27 04:45:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-27 04:45:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 135 transitions. [2018-10-27 04:45:40,938 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 135 transitions. Word has length 219 [2018-10-27 04:45:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:40,938 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 135 transitions. [2018-10-27 04:45:40,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 04:45:40,939 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 135 transitions. [2018-10-27 04:45:40,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-27 04:45:40,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:40,945 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:40,945 INFO L424 AbstractCegarLoop]: === Iteration 15 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:40,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:40,946 INFO L82 PathProgramCache]: Analyzing trace with hash 224292436, now seen corresponding path program 2 times [2018-10-27 04:45:40,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:40,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:40,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:40,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4192 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 4142 trivial. 0 not checked. [2018-10-27 04:45:41,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:41,112 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/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 [2018-10-27 04:45:41,119 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 04:45:41,160 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-27 04:45:41,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 04:45:41,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:41,229 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:41,230 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-27 04:45:41,243 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-27 04:45:41,244 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,279 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,282 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:41,282 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-10-27 04:45:41,418 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:41,419 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-27 04:45:41,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-27 04:45:41,437 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,441 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:41,446 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-10-27 04:45:41,598 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:41,598 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-27 04:45:41,600 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-27 04:45:41,601 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,634 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,638 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:41,638 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-10-27 04:45:41,708 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 04:45:41,708 INFO L477 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-10-27 04:45:41,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-10-27 04:45:41,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,713 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 04:45:41,716 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-27 04:45:41,716 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-10-27 04:45:41,968 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_~#b~0.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_~#b~0.base| 1))) (and (= (select |c_old(#valid)| |main_~#b~0.base|) 0) (= (select .cse0 |c_main_~#mask~0.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_~#mask~0.base| 1) |main_~#b~0.base| 0))))) is different from true [2018-10-27 04:45:41,992 WARN L854 $PredicateComparison]: unable to prove that (exists ((|main_~#b~0.base| Int) (|main_~#mask~0.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_~#b~0.base| 1))) (and (= (select |c_old(#valid)| |main_~#b~0.base|) 0) (= (select .cse0 |main_~#mask~0.base|) 0) (= |c_#valid| (store (store (store .cse0 |main_~#mask~0.base| 1) |main_~#b~0.base| 0) |main_~#mask~0.base| 0))))) is different from true [2018-10-27 04:45:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4192 trivial. 0 not checked. [2018-10-27 04:45:42,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 04:45:42,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2018-10-27 04:45:42,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 04:45:42,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 04:45:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=82, Unknown=2, NotChecked=38, Total=156 [2018-10-27 04:45:42,336 INFO L87 Difference]: Start difference. First operand 130 states and 135 transitions. Second operand 13 states. [2018-10-27 04:45:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:42,607 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2018-10-27 04:45:42,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 04:45:42,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 309 [2018-10-27 04:45:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:42,608 INFO L225 Difference]: With dead ends: 149 [2018-10-27 04:45:42,608 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 04:45:42,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 298 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=195, Unknown=2, NotChecked=62, Total=342 [2018-10-27 04:45:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 04:45:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 04:45:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 04:45:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 04:45:42,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 309 [2018-10-27 04:45:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:42,609 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 04:45:42,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 04:45:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 04:45:42,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 04:45:42,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:42 BoogieIcfgContainer [2018-10-27 04:45:42,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:42,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:42,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:42,615 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:42,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:32" (3/4) ... [2018-10-27 04:45:42,618 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 04:45:42,623 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 04:45:42,623 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-10-27 04:45:42,623 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 04:45:42,626 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-10-27 04:45:42,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-27 04:45:42,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-27 04:45:42,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 04:45:42,661 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e7249b76-09b6-4fa6-89e2-9d7fa3d3b23e/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:42,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:42,662 INFO L168 Benchmark]: Toolchain (without parser) took 10627.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 954.4 MB in the beginning and 993.9 MB in the end (delta: -39.5 MB). Peak memory consumption was 166.0 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,663 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:42,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.66 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,664 INFO L168 Benchmark]: Boogie Preprocessor took 27.75 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,664 INFO L168 Benchmark]: RCFGBuilder took 596.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,664 INFO L168 Benchmark]: TraceAbstraction took 9777.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 993.9 MB in the end (delta: 129.6 MB). Peak memory consumption was 190.9 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:42,665 INFO L168 Benchmark]: Witness Printer took 48.28 ms. Allocated memory is still 1.2 GB. Free memory is still 993.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:42,667 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.66 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.75 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 596.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9777.40 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 993.9 MB in the end (delta: 129.6 MB). Peak memory consumption was 190.9 MB. Max. memory is 11.5 GB. * Witness Printer took 48.28 ms. Allocated memory is still 1.2 GB. Free memory is still 993.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 8 error locations. SAFE Result, 9.7s OverallTime, 15 OverallIterations, 40 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 611 SDtfs, 807 SDslu, 2389 SDs, 0 SdLazy, 1383 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1099 GetRequests, 922 SyntacticMatches, 13 SemanticMatches, 164 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=14, 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, 15 MinimizatonAttempts, 95 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 2037 NumberOfCodeBlocks, 1567 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2013 ConstructedInterpolants, 434 QuantifiedInterpolants, 2482875 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1300 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 13736/14488 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...