./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b7166d94206693c3f254a3c1de8d5825f8510fb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 02:21:21,785 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:21:21,786 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:21:21,792 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:21:21,792 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:21:21,793 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:21:21,793 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:21:21,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:21:21,796 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:21:21,796 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:21:21,797 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:21:21,797 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:21:21,798 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:21:21,799 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:21:21,799 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:21:21,800 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:21:21,800 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:21:21,802 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:21:21,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:21:21,804 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:21:21,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:21:21,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:21:21,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:21:21,808 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:21:21,808 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:21:21,808 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:21:21,810 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:21:21,810 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:21:21,810 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:21:21,811 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:21:21,811 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:21:21,811 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:21:21,812 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:21:21,812 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:21:21,812 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:21:21,813 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:21:21,813 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-23 02:21:21,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:21:21,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:21:21,821 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:21:21,821 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:21:21,822 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:21:21,822 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:21:21,822 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:21:21,822 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:21:21,822 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 02:21:21,822 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:21:21,823 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:21:21,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:21:21,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:21:21,824 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:21:21,824 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:21:21,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:21:21,824 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:21:21,824 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:21:21,825 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:21:21,825 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:21:21,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:21:21,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:21:21,825 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b7166d94206693c3f254a3c1de8d5825f8510fb [2018-11-23 02:21:21,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:21:21,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:21:21,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:21:21,861 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:21:21,861 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:21:21,861 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-23 02:21:21,903 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/data/3c49474aa/38eb40a8a98648118fb423b9e71ce76e/FLAG85c5a903f [2018-11-23 02:21:22,291 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:21:22,291 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/sv-benchmarks/c/termination-crafted/NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-23 02:21:22,296 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/data/3c49474aa/38eb40a8a98648118fb423b9e71ce76e/FLAG85c5a903f [2018-11-23 02:21:22,304 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/data/3c49474aa/38eb40a8a98648118fb423b9e71ce76e [2018-11-23 02:21:22,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:21:22,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:21:22,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:21:22,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:21:22,310 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:21:22,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12858536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22, skipping insertion in model container [2018-11-23 02:21:22,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:21:22,327 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:21:22,424 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:21:22,426 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:21:22,434 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:21:22,442 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:21:22,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22 WrapperNode [2018-11-23 02:21:22,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:21:22,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:21:22,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:21:22,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:21:22,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:21:22,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:21:22,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:21:22,457 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:21:22,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... [2018-11-23 02:21:22,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:21:22,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:21:22,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:21:22,468 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:21:22,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:21:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:21:22,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:21:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure g [2018-11-23 02:21:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2018-11-23 02:21:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:21:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:21:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:21:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:21:22,676 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:21:22,676 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 02:21:22,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:22 BoogieIcfgContainer [2018-11-23 02:21:22,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:21:22,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:21:22,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:21:22,683 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:21:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:22" (1/3) ... [2018-11-23 02:21:22,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a6e4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:22, skipping insertion in model container [2018-11-23 02:21:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:22" (2/3) ... [2018-11-23 02:21:22,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a6e4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:22, skipping insertion in model container [2018-11-23 02:21:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:22" (3/3) ... [2018-11-23 02:21:22,685 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-23 02:21:22,691 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:21:22,696 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 02:21:22,707 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 02:21:22,725 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:21:22,726 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:21:22,726 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:21:22,726 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:21:22,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:21:22,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:21:22,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:21:22,727 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:21:22,727 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:21:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-23 02:21:22,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:21:22,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:22,743 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:22,745 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:22,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:22,749 INFO L82 PathProgramCache]: Analyzing trace with hash -774276160, now seen corresponding path program 1 times [2018-11-23 02:21:22,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:22,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:22,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:22,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:22,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:22,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:21:22,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 02:21:22,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:21:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:21:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:21:22,894 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-23 02:21:22,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:22,984 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-23 02:21:22,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:21:22,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-23 02:21:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:22,995 INFO L225 Difference]: With dead ends: 46 [2018-11-23 02:21:22,995 INFO L226 Difference]: Without dead ends: 40 [2018-11-23 02:21:22,997 INFO L631 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 [2018-11-23 02:21:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-23 02:21:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2018-11-23 02:21:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 02:21:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2018-11-23 02:21:23,031 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 10 [2018-11-23 02:21:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,031 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2018-11-23 02:21:23,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:21:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2018-11-23 02:21:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-23 02:21:23,032 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,032 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,032 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1767242855, now seen corresponding path program 1 times [2018-11-23 02:21:23,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:23,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:21:23,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 02:21:23,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:21:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:21:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:21:23,067 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 5 states. [2018-11-23 02:21:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,129 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-11-23 02:21:23,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:21:23,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-23 02:21:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,131 INFO L225 Difference]: With dead ends: 54 [2018-11-23 02:21:23,131 INFO L226 Difference]: Without dead ends: 50 [2018-11-23 02:21:23,132 INFO L631 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 [2018-11-23 02:21:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-23 02:21:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-11-23 02:21:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 02:21:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2018-11-23 02:21:23,140 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 11 [2018-11-23 02:21:23,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,140 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-23 02:21:23,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:21:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2018-11-23 02:21:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 02:21:23,141 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,141 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,141 INFO L423 AbstractCegarLoop]: === Iteration 3 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,142 INFO L82 PathProgramCache]: Analyzing trace with hash -601436741, now seen corresponding path program 1 times [2018-11-23 02:21:23,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:23,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:21:23,199 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:21:23,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:21:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:23,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:21:23,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 02:21:23,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 02:21:23,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:21:23,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:21:23,250 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 7 states. [2018-11-23 02:21:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,361 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2018-11-23 02:21:23,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 02:21:23,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-23 02:21:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,363 INFO L225 Difference]: With dead ends: 67 [2018-11-23 02:21:23,363 INFO L226 Difference]: Without dead ends: 66 [2018-11-23 02:21:23,364 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-11-23 02:21:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-23 02:21:23,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2018-11-23 02:21:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-23 02:21:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-11-23 02:21:23,373 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 16 [2018-11-23 02:21:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,373 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-11-23 02:21:23,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 02:21:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-11-23 02:21:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:21:23,374 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,374 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,374 INFO L423 AbstractCegarLoop]: === Iteration 4 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1839303495, now seen corresponding path program 1 times [2018-11-23 02:21:23,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:23,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:21:23,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:21:23,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 02:21:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:21:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:21:23,395 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 4 states. [2018-11-23 02:21:23,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,414 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2018-11-23 02:21:23,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 02:21:23,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-23 02:21:23,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,416 INFO L225 Difference]: With dead ends: 82 [2018-11-23 02:21:23,416 INFO L226 Difference]: Without dead ends: 81 [2018-11-23 02:21:23,417 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:21:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-23 02:21:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2018-11-23 02:21:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-23 02:21:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2018-11-23 02:21:23,426 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 18 [2018-11-23 02:21:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,427 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2018-11-23 02:21:23,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 02:21:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2018-11-23 02:21:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 02:21:23,427 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,428 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,428 INFO L423 AbstractCegarLoop]: === Iteration 5 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1183833542, now seen corresponding path program 1 times [2018-11-23 02:21:23,428 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:23,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:21:23,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:21:23,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:21:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:21:23,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:21:23,450 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 3 states. [2018-11-23 02:21:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,458 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2018-11-23 02:21:23,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:21:23,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-23 02:21:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,459 INFO L225 Difference]: With dead ends: 70 [2018-11-23 02:21:23,459 INFO L226 Difference]: Without dead ends: 69 [2018-11-23 02:21:23,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:21:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-23 02:21:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-11-23 02:21:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-23 02:21:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2018-11-23 02:21:23,468 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 19 [2018-11-23 02:21:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,469 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2018-11-23 02:21:23,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:21:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2018-11-23 02:21:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 02:21:23,469 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,470 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,470 INFO L423 AbstractCegarLoop]: === Iteration 6 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash -544755481, now seen corresponding path program 2 times [2018-11-23 02:21:23,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:23,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:21:23,529 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:21:23,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:21:23,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:21:23,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:21:23,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:21:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:23,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:21:23,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-23 02:21:23,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 02:21:23,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 02:21:23,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-23 02:21:23,562 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 9 states. [2018-11-23 02:21:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,671 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2018-11-23 02:21:23,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 02:21:23,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-23 02:21:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,673 INFO L225 Difference]: With dead ends: 89 [2018-11-23 02:21:23,673 INFO L226 Difference]: Without dead ends: 88 [2018-11-23 02:21:23,674 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-23 02:21:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-23 02:21:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2018-11-23 02:21:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-23 02:21:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2018-11-23 02:21:23,684 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 21 [2018-11-23 02:21:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,684 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2018-11-23 02:21:23,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 02:21:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2018-11-23 02:21:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 02:21:23,685 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,685 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,686 INFO L423 AbstractCegarLoop]: === Iteration 7 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1671679351, now seen corresponding path program 1 times [2018-11-23 02:21:23,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:21:23,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:23,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:21:23,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 02:21:23,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 02:21:23,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 02:21:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:21:23,713 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 6 states. [2018-11-23 02:21:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,795 INFO L93 Difference]: Finished difference Result 121 states and 153 transitions. [2018-11-23 02:21:23,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 02:21:23,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-23 02:21:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,797 INFO L225 Difference]: With dead ends: 121 [2018-11-23 02:21:23,797 INFO L226 Difference]: Without dead ends: 120 [2018-11-23 02:21:23,798 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-23 02:21:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-23 02:21:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2018-11-23 02:21:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-11-23 02:21:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2018-11-23 02:21:23,811 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 23 [2018-11-23 02:21:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,812 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2018-11-23 02:21:23,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 02:21:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2018-11-23 02:21:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 02:21:23,813 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,813 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,813 INFO L423 AbstractCegarLoop]: === Iteration 8 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,813 INFO L82 PathProgramCache]: Analyzing trace with hash -282452290, now seen corresponding path program 1 times [2018-11-23 02:21:23,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:23,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:21:23,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 02:21:23,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 02:21:23,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 02:21:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:21:23,851 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand 6 states. [2018-11-23 02:21:23,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:23,904 INFO L93 Difference]: Finished difference Result 134 states and 178 transitions. [2018-11-23 02:21:23,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:21:23,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-23 02:21:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:23,906 INFO L225 Difference]: With dead ends: 134 [2018-11-23 02:21:23,906 INFO L226 Difference]: Without dead ends: 70 [2018-11-23 02:21:23,906 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:21:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-23 02:21:23,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2018-11-23 02:21:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 02:21:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-23 02:21:23,912 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2018-11-23 02:21:23,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:23,912 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-23 02:21:23,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 02:21:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-23 02:21:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 02:21:23,913 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:23,914 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:23,914 INFO L423 AbstractCegarLoop]: === Iteration 9 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:23,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:23,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1622021829, now seen corresponding path program 3 times [2018-11-23 02:21:23,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:23,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:23,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:21:23,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:24,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:21:24,001 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:21:24,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:21:24,014 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 02:21:24,014 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:21:24,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:21:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:24,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:21:24,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-23 02:21:24,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 02:21:24,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 02:21:24,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:21:24,037 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 11 states. [2018-11-23 02:21:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:24,140 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-11-23 02:21:24,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 02:21:24,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-23 02:21:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:24,141 INFO L225 Difference]: With dead ends: 66 [2018-11-23 02:21:24,141 INFO L226 Difference]: Without dead ends: 65 [2018-11-23 02:21:24,142 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-23 02:21:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-23 02:21:24,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2018-11-23 02:21:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-23 02:21:24,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-23 02:21:24,147 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 26 [2018-11-23 02:21:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:24,148 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-23 02:21:24,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 02:21:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-23 02:21:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 02:21:24,149 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:24,149 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:24,149 INFO L423 AbstractCegarLoop]: === Iteration 10 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:24,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:24,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1947044292, now seen corresponding path program 2 times [2018-11-23 02:21:24,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:24,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:24,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:24,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:21:24,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:24,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:21:24,208 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:21:24,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:21:24,224 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:21:24,225 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:21:24,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:21:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:24,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:21:24,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 02:21:24,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 02:21:24,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 02:21:24,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:21:24,255 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 8 states. [2018-11-23 02:21:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:24,309 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2018-11-23 02:21:24,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 02:21:24,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-23 02:21:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:24,311 INFO L225 Difference]: With dead ends: 74 [2018-11-23 02:21:24,311 INFO L226 Difference]: Without dead ends: 58 [2018-11-23 02:21:24,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:21:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-23 02:21:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2018-11-23 02:21:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-23 02:21:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-11-23 02:21:24,316 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 29 [2018-11-23 02:21:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:24,316 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-11-23 02:21:24,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 02:21:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-11-23 02:21:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 02:21:24,317 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:24,317 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:24,317 INFO L423 AbstractCegarLoop]: === Iteration 11 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:24,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:24,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1283573095, now seen corresponding path program 4 times [2018-11-23 02:21:24,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:24,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:24,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:24,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:21:24,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:21:24,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:21:24,391 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:21:24,397 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:21:24,403 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:21:24,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:21:24,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:21:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-23 02:21:24,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:21:24,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 13 [2018-11-23 02:21:24,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 02:21:24,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 02:21:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-23 02:21:24,479 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 14 states. [2018-11-23 02:21:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:24,523 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-11-23 02:21:24,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:21:24,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2018-11-23 02:21:24,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:24,524 INFO L225 Difference]: With dead ends: 65 [2018-11-23 02:21:24,524 INFO L226 Difference]: Without dead ends: 64 [2018-11-23 02:21:24,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-23 02:21:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-23 02:21:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2018-11-23 02:21:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-23 02:21:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-11-23 02:21:24,529 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 31 [2018-11-23 02:21:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:24,529 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-11-23 02:21:24,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 02:21:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-11-23 02:21:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 02:21:24,530 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:21:24,530 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:21:24,530 INFO L423 AbstractCegarLoop]: === Iteration 12 === [gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 02:21:24,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:21:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash 634524286, now seen corresponding path program 3 times [2018-11-23 02:21:24,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:21:24,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:21:24,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:24,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:21:24,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:21:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:21:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:24,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:21:24,578 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:21:24,596 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:21:24,604 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-23 02:21:24,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:21:24,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:21:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:21:24,623 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:21:24,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-23 02:21:24,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 02:21:24,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 02:21:24,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-23 02:21:24,623 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 10 states. [2018-11-23 02:21:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:21:24,723 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-23 02:21:24,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 02:21:24,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-11-23 02:21:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:21:24,724 INFO L225 Difference]: With dead ends: 46 [2018-11-23 02:21:24,724 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:21:24,724 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-11-23 02:21:24,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:21:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:21:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:21:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:21:24,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-11-23 02:21:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:21:24,725 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:21:24,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 02:21:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:21:24,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:21:24,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:21:24,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,817 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:24,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 02:21:25,099 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 26 [2018-11-23 02:21:25,178 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 02:21:25,178 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:21:25,178 INFO L448 ceAbstractionStarter]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point gFINAL(lines 10 16) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L444 ceAbstractionStarter]: At program point L15-2(line 15) the Hoare annotation is: (and (or (or (< 2147483647 |g_#in~x|) (< |g_#in~x| 0)) (and (<= 0 g_~x) (<= g_~x 2147483647) (not (= 0 g_~x)))) (or (<= 2 g_~x) (< |g_#in~x| 2) (< 2 |g_#in~x|))) [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,179 INFO L448 ceAbstractionStarter]: For program point L15-5(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L444 ceAbstractionStarter]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (< 2147483647 |g_#in~x|)) (.cse1 (< |g_#in~x| 0))) (and (or (and (and (<= g_~x 2147483647) (<= |g_#t~ret0| 1)) (<= 1 |g_#t~ret0|)) (or .cse0 .cse1)) (or (< |g_#in~x| 2) (< 2 |g_#in~x|)) (or (<= 1 g_~x) .cse0 .cse1))) [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point gEXIT(lines 10 16) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point L15-7(line 15) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L451 ceAbstractionStarter]: At program point gENTRY(lines 10 16) the Hoare annotation is: true [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:21:25,180 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 18 22) the Hoare annotation is: true [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 18 22) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 18 22) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L444 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 main_~x~0)) [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-23 02:21:25,180 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-23 02:21:25,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:21:25 BoogieIcfgContainer [2018-11-23 02:21:25,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:21:25,185 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:21:25,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:21:25,185 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:21:25,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:22" (3/4) ... [2018-11-23 02:21:25,188 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:21:25,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:21:25,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2018-11-23 02:21:25,194 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:21:25,197 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 02:21:25,197 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 02:21:25,197 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:21:25,233 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_058ceed0-1250-4f1a-879e-14d08dec7b3b/bin-2019/uautomizer/witness.graphml [2018-11-23 02:21:25,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:21:25,233 INFO L168 Benchmark]: Toolchain (without parser) took 2926.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 959.3 MB in the beginning and 925.2 MB in the end (delta: 34.0 MB). Peak memory consumption was 165.1 MB. Max. memory is 11.5 GB. [2018-11-23 02:21:25,234 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:21:25,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.88 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:21:25,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.65 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:21:25,235 INFO L168 Benchmark]: Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:21:25,235 INFO L168 Benchmark]: RCFGBuilder took 209.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:21:25,235 INFO L168 Benchmark]: TraceAbstraction took 2507.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.6 MB in the end (delta: 188.3 MB). Peak memory consumption was 188.3 MB. Max. memory is 11.5 GB. [2018-11-23 02:21:25,235 INFO L168 Benchmark]: Witness Printer took 48.20 ms. Allocated memory is still 1.2 GB. Free memory was 928.6 MB in the beginning and 925.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:21:25,237 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.88 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.65 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2507.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.6 MB in the end (delta: 188.3 MB). Peak memory consumption was 188.3 MB. Max. memory is 11.5 GB. * Witness Printer took 48.20 ms. Allocated memory is still 1.2 GB. Free memory was 928.6 MB in the beginning and 925.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 4 error locations. SAFE Result, 2.4s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 250 SDtfs, 337 SDslu, 917 SDs, 0 SdLazy, 638 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 126 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 65 PreInvPairs, 70 NumberOfFragments, 89 HoareAnnotationTreeSize, 65 FomulaSimplifications, 18128 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4818 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 419 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 27599 SizeOfPredicates, 19 NumberOfNonLiveVariables, 313 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 131/307 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...