./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 0.1.23-1dbac8b [2018-11-10 06:59:29,716 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:59:29,717 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:59:29,726 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:59:29,727 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:59:29,727 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:59:29,728 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:59:29,730 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:59:29,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:59:29,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:59:29,732 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:59:29,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:59:29,733 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:59:29,734 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:59:29,735 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:59:29,736 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:59:29,737 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:59:29,738 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:59:29,740 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:59:29,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:59:29,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:59:29,743 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:59:29,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:59:29,746 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:59:29,746 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:59:29,747 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:59:29,748 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:59:29,749 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:59:29,749 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:59:29,750 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:59:29,751 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:59:29,751 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:59:29,751 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:59:29,752 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:59:29,752 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:59:29,753 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:59:29,753 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 06:59:29,762 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:59:29,762 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:59:29,763 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:59:29,763 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 06:59:29,763 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 06:59:29,764 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 06:59:29,764 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 06:59:29,764 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:59:29,764 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 06:59:29,764 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:59:29,764 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:59:29,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:59:29,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:59:29,765 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:59:29,765 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 06:59:29,765 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:59:29,765 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:59:29,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:59:29,766 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:59:29,766 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:59:29,766 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:59:29,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:59:29,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:59:29,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:59:29,767 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:59:29,767 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 06:59:29,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:59:29,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:59:29,767 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_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:29,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:59:29,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:59:29,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:59:29,813 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:59:29,813 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:59:29,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-10 06:59:29,871 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/data/88c300901/ee3ddf7caff54614886957405ced1229/FLAG56c873674 [2018-11-10 06:59:30,244 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:59:30,245 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/sv-benchmarks/c/termination-crafted/NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-10 06:59:30,250 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/data/88c300901/ee3ddf7caff54614886957405ced1229/FLAG56c873674 [2018-11-10 06:59:30,263 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/data/88c300901/ee3ddf7caff54614886957405ced1229 [2018-11-10 06:59:30,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:59:30,268 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 06:59:30,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:59:30,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:59:30,273 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:59:30,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bb9f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30, skipping insertion in model container [2018-11-10 06:59:30,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:59:30,304 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:59:30,431 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:59:30,433 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:59:30,445 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:59:30,456 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:59:30,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30 WrapperNode [2018-11-10 06:59:30,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:59:30,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:59:30,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:59:30,458 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:59:30,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... [2018-11-10 06:59:30,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:59:30,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:59:30,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:59:30,478 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:59:30,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:59:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:59:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2018-11-10 06:59:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:59:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 06:59:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure g [2018-11-10 06:59:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:59:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:59:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:59:30,699 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:59:30,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:59:30 BoogieIcfgContainer [2018-11-10 06:59:30,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:59:30,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:59:30,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:59:30,702 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:59:30,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:59:30" (1/3) ... [2018-11-10 06:59:30,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20440a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:59:30, skipping insertion in model container [2018-11-10 06:59:30,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:59:30" (2/3) ... [2018-11-10 06:59:30,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20440a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:59:30, skipping insertion in model container [2018-11-10 06:59:30,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:59:30" (3/3) ... [2018-11-10 06:59:30,705 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2b_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-10 06:59:30,715 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:59:30,722 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-10 06:59:30,736 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-10 06:59:30,758 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 06:59:30,758 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:59:30,758 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:59:30,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:59:30,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:59:30,759 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:59:30,759 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:59:30,759 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:59:30,759 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:59:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-10 06:59:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 06:59:30,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:30,776 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:30,778 INFO L424 AbstractCegarLoop]: === Iteration 1 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:30,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash -774276160, now seen corresponding path program 1 times [2018-11-10 06:59:30,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:30,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:30,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:30,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:30,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:30,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:59:30,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 06:59:30,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:59:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:59:30,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:59:30,950 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-10 06:59:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:31,081 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-10 06:59:31,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 06:59:31,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-10 06:59:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:31,092 INFO L225 Difference]: With dead ends: 46 [2018-11-10 06:59:31,092 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 06:59:31,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:59:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 06:59:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2018-11-10 06:59:31,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 06:59:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2018-11-10 06:59:31,130 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 10 [2018-11-10 06:59:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:31,131 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2018-11-10 06:59:31,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:59:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2018-11-10 06:59:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 06:59:31,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:31,132 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:31,132 INFO L424 AbstractCegarLoop]: === Iteration 2 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:31,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:31,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1767242855, now seen corresponding path program 1 times [2018-11-10 06:59:31,133 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:31,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:31,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:31,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:31,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:59:31,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 06:59:31,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:59:31,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:59:31,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:59:31,185 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 5 states. [2018-11-10 06:59:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:31,263 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-11-10 06:59:31,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 06:59:31,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-10 06:59:31,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:31,264 INFO L225 Difference]: With dead ends: 54 [2018-11-10 06:59:31,265 INFO L226 Difference]: Without dead ends: 50 [2018-11-10 06:59:31,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:59:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-10 06:59:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-11-10 06:59:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 06:59:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2018-11-10 06:59:31,274 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 11 [2018-11-10 06:59:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:31,274 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-10 06:59:31,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:59:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2018-11-10 06:59:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 06:59:31,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:31,275 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:31,275 INFO L424 AbstractCegarLoop]: === Iteration 3 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:31,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:31,275 INFO L82 PathProgramCache]: Analyzing trace with hash -601436741, now seen corresponding path program 1 times [2018-11-10 06:59:31,275 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:31,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:31,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:31,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:31,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:59:31,319 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:31,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:59:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:31,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:59:31,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 06:59:31,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 06:59:31,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 06:59:31,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-10 06:59:31,392 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 7 states. [2018-11-10 06:59:31,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:31,486 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2018-11-10 06:59:31,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 06:59:31,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-10 06:59:31,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:31,488 INFO L225 Difference]: With dead ends: 67 [2018-11-10 06:59:31,488 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 06:59:31,490 INFO L605 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 [2018-11-10 06:59:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 06:59:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2018-11-10 06:59:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 06:59:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-11-10 06:59:31,500 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 16 [2018-11-10 06:59:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:31,501 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-11-10 06:59:31,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 06:59:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-11-10 06:59:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 06:59:31,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:31,502 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:31,503 INFO L424 AbstractCegarLoop]: === Iteration 4 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:31,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:31,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1839303495, now seen corresponding path program 1 times [2018-11-10 06:59:31,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:31,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:31,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:31,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:31,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:59:31,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 06:59:31,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 06:59:31,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 06:59:31,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 06:59:31,535 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 4 states. [2018-11-10 06:59:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:31,568 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2018-11-10 06:59:31,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 06:59:31,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-10 06:59:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:31,570 INFO L225 Difference]: With dead ends: 82 [2018-11-10 06:59:31,570 INFO L226 Difference]: Without dead ends: 81 [2018-11-10 06:59:31,571 INFO L605 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 [2018-11-10 06:59:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-10 06:59:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2018-11-10 06:59:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-10 06:59:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2018-11-10 06:59:31,580 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 18 [2018-11-10 06:59:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:31,580 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2018-11-10 06:59:31,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 06:59:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2018-11-10 06:59:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 06:59:31,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:31,581 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:31,581 INFO L424 AbstractCegarLoop]: === Iteration 5 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:31,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:31,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1183833542, now seen corresponding path program 1 times [2018-11-10 06:59:31,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:31,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:31,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:31,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:31,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:59:31,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 06:59:31,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 06:59:31,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 06:59:31,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 06:59:31,607 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 3 states. [2018-11-10 06:59:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:31,621 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2018-11-10 06:59:31,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 06:59:31,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-10 06:59:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:31,623 INFO L225 Difference]: With dead ends: 70 [2018-11-10 06:59:31,623 INFO L226 Difference]: Without dead ends: 69 [2018-11-10 06:59:31,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 06:59:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-10 06:59:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-11-10 06:59:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-10 06:59:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2018-11-10 06:59:31,637 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 19 [2018-11-10 06:59:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:31,638 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2018-11-10 06:59:31,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 06:59:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2018-11-10 06:59:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 06:59:31,638 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:31,639 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:31,639 INFO L424 AbstractCegarLoop]: === Iteration 6 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:31,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash -544755481, now seen corresponding path program 2 times [2018-11-10 06:59:31,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:31,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:31,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:31,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:31,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:59:31,703 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:31,715 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 06:59:31,723 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 06:59:31,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:59:31,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:59:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:31,750 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:59:31,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 06:59:31,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 06:59:31,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 06:59:31,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-10 06:59:31,751 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 9 states. [2018-11-10 06:59:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:31,879 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2018-11-10 06:59:31,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 06:59:31,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-10 06:59:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:31,881 INFO L225 Difference]: With dead ends: 89 [2018-11-10 06:59:31,881 INFO L226 Difference]: Without dead ends: 88 [2018-11-10 06:59:31,881 INFO L605 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 [2018-11-10 06:59:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-10 06:59:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2018-11-10 06:59:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-10 06:59:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2018-11-10 06:59:31,894 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 21 [2018-11-10 06:59:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:31,895 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2018-11-10 06:59:31,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 06:59:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2018-11-10 06:59:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 06:59:31,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:31,896 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:31,896 INFO L424 AbstractCegarLoop]: === Iteration 7 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:31,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:31,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1671679351, now seen corresponding path program 1 times [2018-11-10 06:59:31,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:31,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:31,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:59:31,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:31,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:59:31,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:59:31,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 06:59:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 06:59:31,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:59:31,949 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 6 states. [2018-11-10 06:59:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:32,083 INFO L93 Difference]: Finished difference Result 121 states and 153 transitions. [2018-11-10 06:59:32,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 06:59:32,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-10 06:59:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:32,085 INFO L225 Difference]: With dead ends: 121 [2018-11-10 06:59:32,085 INFO L226 Difference]: Without dead ends: 120 [2018-11-10 06:59:32,085 INFO L605 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 [2018-11-10 06:59:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-10 06:59:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2018-11-10 06:59:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-11-10 06:59:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2018-11-10 06:59:32,096 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 23 [2018-11-10 06:59:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:32,097 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2018-11-10 06:59:32,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 06:59:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2018-11-10 06:59:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 06:59:32,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:32,100 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:32,100 INFO L424 AbstractCegarLoop]: === Iteration 8 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:32,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash -282452290, now seen corresponding path program 1 times [2018-11-10 06:59:32,100 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:32,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:32,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:32,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:32,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:59:32,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:59:32,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 06:59:32,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 06:59:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 06:59:32,150 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand 6 states. [2018-11-10 06:59:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:32,218 INFO L93 Difference]: Finished difference Result 134 states and 178 transitions. [2018-11-10 06:59:32,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 06:59:32,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-10 06:59:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:32,220 INFO L225 Difference]: With dead ends: 134 [2018-11-10 06:59:32,220 INFO L226 Difference]: Without dead ends: 70 [2018-11-10 06:59:32,223 INFO L605 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 [2018-11-10 06:59:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-10 06:59:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2018-11-10 06:59:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 06:59:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-10 06:59:32,232 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2018-11-10 06:59:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:32,232 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-10 06:59:32,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 06:59:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-10 06:59:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 06:59:32,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:32,234 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:32,234 INFO L424 AbstractCegarLoop]: === Iteration 9 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:32,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:32,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1622021829, now seen corresponding path program 3 times [2018-11-10 06:59:32,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:32,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:32,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:59:32,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:32,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:59:32,343 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:32,352 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:59:32,360 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 06:59:32,360 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:59:32,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:59:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:32,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:59:32,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-10 06:59:32,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 06:59:32,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 06:59:32,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-10 06:59:32,388 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 11 states. [2018-11-10 06:59:32,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:32,489 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-11-10 06:59:32,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 06:59:32,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-10 06:59:32,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:32,490 INFO L225 Difference]: With dead ends: 66 [2018-11-10 06:59:32,490 INFO L226 Difference]: Without dead ends: 65 [2018-11-10 06:59:32,491 INFO L605 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 [2018-11-10 06:59:32,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-10 06:59:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2018-11-10 06:59:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 06:59:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-11-10 06:59:32,496 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 26 [2018-11-10 06:59:32,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:32,497 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-11-10 06:59:32,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 06:59:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-11-10 06:59:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 06:59:32,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:32,498 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:32,498 INFO L424 AbstractCegarLoop]: === Iteration 10 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:32,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1947044292, now seen corresponding path program 2 times [2018-11-10 06:59:32,499 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:32,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:32,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:59:32,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:32,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:59:32,563 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:32,571 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 06:59:32,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 06:59:32,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:59:32,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:59:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:32,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:59:32,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 06:59:32,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 06:59:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 06:59:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-10 06:59:32,607 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 8 states. [2018-11-10 06:59:32,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:32,678 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2018-11-10 06:59:32,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 06:59:32,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-10 06:59:32,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:32,679 INFO L225 Difference]: With dead ends: 74 [2018-11-10 06:59:32,679 INFO L226 Difference]: Without dead ends: 58 [2018-11-10 06:59:32,680 INFO L605 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 [2018-11-10 06:59:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-10 06:59:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2018-11-10 06:59:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 06:59:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-11-10 06:59:32,687 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 29 [2018-11-10 06:59:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:32,687 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-11-10 06:59:32,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 06:59:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-11-10 06:59:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 06:59:32,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:32,688 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:32,689 INFO L424 AbstractCegarLoop]: === Iteration 11 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:32,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:32,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1283573095, now seen corresponding path program 4 times [2018-11-10 06:59:32,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:32,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:32,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:59:32,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:59:32,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:59:32,784 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:32,790 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 06:59:32,798 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 06:59:32,798 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:59:32,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:59:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-10 06:59:32,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:59:32,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 13 [2018-11-10 06:59:32,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 06:59:32,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 06:59:32,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-10 06:59:32,865 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 14 states. [2018-11-10 06:59:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:32,915 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-11-10 06:59:32,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 06:59:32,916 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2018-11-10 06:59:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:32,916 INFO L225 Difference]: With dead ends: 65 [2018-11-10 06:59:32,917 INFO L226 Difference]: Without dead ends: 64 [2018-11-10 06:59:32,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-10 06:59:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-10 06:59:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 37. [2018-11-10 06:59:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 06:59:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-11-10 06:59:32,923 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 31 [2018-11-10 06:59:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:32,924 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-11-10 06:59:32,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 06:59:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-11-10 06:59:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 06:59:32,924 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:59:32,925 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:59:32,925 INFO L424 AbstractCegarLoop]: === Iteration 12 === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:59:32,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:59:32,925 INFO L82 PathProgramCache]: Analyzing trace with hash 634524286, now seen corresponding path program 3 times [2018-11-10 06:59:32,925 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 06:59:32,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 06:59:32,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 06:59:32,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:59:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:59:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:32,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:59:32,999 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/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 [2018-11-10 06:59:33,017 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 06:59:33,025 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-10 06:59:33,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 06:59:33,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:59:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:59:33,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:59:33,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 06:59:33,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 06:59:33,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 06:59:33,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-10 06:59:33,051 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 10 states. [2018-11-10 06:59:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:59:33,150 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-10 06:59:33,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 06:59:33,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-11-10 06:59:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:59:33,152 INFO L225 Difference]: With dead ends: 46 [2018-11-10 06:59:33,152 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 06:59:33,152 INFO L605 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 [2018-11-10 06:59:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 06:59:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 06:59:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 06:59:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 06:59:33,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-11-10 06:59:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:59:33,153 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 06:59:33,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 06:59:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 06:59:33,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 06:59:33,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 06:59:33,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,185 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 06:59:33,615 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 26 [2018-11-10 06:59:33,714 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 06:59:33,714 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point gFINAL(lines 10 16) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L421 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|))) [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point L12(lines 12 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,715 INFO L425 ceAbstractionStarter]: For program point L15-5(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L421 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))) [2018-11-10 06:59:33,716 INFO L425 ceAbstractionStarter]: For program point gEXIT(lines 10 16) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L425 ceAbstractionStarter]: For program point L15-7(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L428 ceAbstractionStarter]: At program point gENTRY(lines 10 16) the Hoare annotation is: true [2018-11-10 06:59:33,716 INFO L425 ceAbstractionStarter]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L425 ceAbstractionStarter]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 06:59:33,716 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 06:59:33,716 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 06:59:33,716 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 18 22) the Hoare annotation is: true [2018-11-10 06:59:33,717 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 18 22) no Hoare annotation was computed. [2018-11-10 06:59:33,717 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 18 22) no Hoare annotation was computed. [2018-11-10 06:59:33,717 INFO L421 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 main_~x~0)) [2018-11-10 06:59:33,717 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-10 06:59:33,717 INFO L425 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-10 06:59:33,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:59:33 BoogieIcfgContainer [2018-11-10 06:59:33,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:59:33,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:59:33,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:59:33,725 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:59:33,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:59:30" (3/4) ... [2018-11-10 06:59:33,729 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 06:59:33,736 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 06:59:33,736 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2018-11-10 06:59:33,737 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 06:59:33,742 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-10 06:59:33,742 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 06:59:33,742 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 06:59:33,777 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0c61824f-6036-4819-ad9e-8b4f525f4dae/bin-2019/uautomizer/witness.graphml [2018-11-10 06:59:33,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:59:33,778 INFO L168 Benchmark]: Toolchain (without parser) took 3510.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 961.9 MB in the beginning and 937.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 163.6 MB. Max. memory is 11.5 GB. [2018-11-10 06:59:33,779 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:59:33,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.77 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 950.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 06:59:33,779 INFO L168 Benchmark]: Boogie Preprocessor took 20.40 ms. Allocated memory is still 1.0 GB. Free memory is still 950.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:59:33,780 INFO L168 Benchmark]: RCFGBuilder took 221.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-11-10 06:59:33,780 INFO L168 Benchmark]: TraceAbstraction took 3024.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 942.9 MB in the end (delta: 184.4 MB). Peak memory consumption was 184.4 MB. Max. memory is 11.5 GB. [2018-11-10 06:59:33,780 INFO L168 Benchmark]: Witness Printer took 52.68 ms. Allocated memory is still 1.2 GB. Free memory was 942.9 MB in the beginning and 937.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-10 06:59:33,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.77 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 950.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.40 ms. Allocated memory is still 1.0 GB. Free memory is still 950.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 221.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3024.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 942.9 MB in the end (delta: 184.4 MB). Peak memory consumption was 184.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.68 ms. Allocated memory is still 1.2 GB. Free memory was 942.9 MB in the beginning and 937.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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, 2.9s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s 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, 0.7s 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 126 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 65 PreInvPairs, 70 NumberOfFragments, 89 HoareAnnotationTreeSize, 65 FomulaSimplifications, 18128 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4818 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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...