./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9448a6696b4991e038dda55623feb6ffc9366da0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:14:08,986 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:14:08,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:14:08,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:14:08,996 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:14:08,996 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:14:08,997 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:14:08,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:14:08,999 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:14:09,000 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:14:09,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:14:09,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:14:09,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:14:09,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:14:09,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:14:09,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:14:09,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:14:09,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:14:09,006 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:14:09,008 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:14:09,008 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:14:09,009 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:14:09,011 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:14:09,011 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:14:09,011 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:14:09,012 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:14:09,013 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:14:09,013 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:14:09,014 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:14:09,015 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:14:09,015 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:14:09,016 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:14:09,016 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:14:09,016 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:14:09,017 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:14:09,017 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:14:09,017 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 13:14:09,027 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:14:09,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:14:09,028 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 13:14:09,028 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 13:14:09,028 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 13:14:09,029 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 13:14:09,029 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 13:14:09,029 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:14:09,029 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 13:14:09,029 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:14:09,029 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 13:14:09,029 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:14:09,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 13:14:09,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 13:14:09,030 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 13:14:09,030 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 13:14:09,030 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:14:09,030 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 13:14:09,030 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:14:09,031 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:14:09,031 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 13:14:09,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 13:14:09,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:14:09,033 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:14:09,033 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 13:14:09,033 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 13:14:09,033 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 13:14:09,034 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 13:14:09,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 13:14:09,034 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_4a1314df-25eb-4248-a516-81af5a003a5d/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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9448a6696b4991e038dda55623feb6ffc9366da0 [2018-11-10 13:14:09,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:14:09,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:14:09,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:14:09,069 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:14:09,069 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:14:09,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c [2018-11-10 13:14:09,110 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/data/a0da69bf1/f670e724f7ae43d48cd5e3a8beb057d1/FLAG2e606d6df [2018-11-10 13:14:09,434 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:14:09,435 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c [2018-11-10 13:14:09,438 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/data/a0da69bf1/f670e724f7ae43d48cd5e3a8beb057d1/FLAG2e606d6df [2018-11-10 13:14:09,447 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/data/a0da69bf1/f670e724f7ae43d48cd5e3a8beb057d1 [2018-11-10 13:14:09,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:14:09,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 13:14:09,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:14:09,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:14:09,453 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:14:09,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12305cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09, skipping insertion in model container [2018-11-10 13:14:09,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:14:09,470 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:14:09,565 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:14:09,567 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:14:09,575 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:14:09,583 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:14:09,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09 WrapperNode [2018-11-10 13:14:09,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:14:09,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:14:09,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:14:09,584 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:14:09,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... [2018-11-10 13:14:09,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:14:09,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:14:09,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:14:09,604 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:14:09,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/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 13:14:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 13:14:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:14:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-10 13:14:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-11-10 13:14:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 13:14:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 13:14:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 13:14:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-10 13:14:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-11-10 13:14:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 13:14:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 13:14:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:14:09,786 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:14:09,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:14:09 BoogieIcfgContainer [2018-11-10 13:14:09,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:14:09,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 13:14:09,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 13:14:09,790 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 13:14:09,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:14:09" (1/3) ... [2018-11-10 13:14:09,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227053ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:14:09, skipping insertion in model container [2018-11-10 13:14:09,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:09" (2/3) ... [2018-11-10 13:14:09,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227053ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:14:09, skipping insertion in model container [2018-11-10 13:14:09,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:14:09" (3/3) ... [2018-11-10 13:14:09,793 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5_true-unreach-call_true-termination.c [2018-11-10 13:14:09,800 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 13:14:09,806 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 13:14:09,818 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 13:14:09,840 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 13:14:09,840 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 13:14:09,841 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 13:14:09,841 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 13:14:09,841 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:14:09,841 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:14:09,841 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 13:14:09,841 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:14:09,841 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 13:14:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-10 13:14:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 13:14:09,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:09,861 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:09,863 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:09,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash -550894517, now seen corresponding path program 1 times [2018-11-10 13:14:09,871 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:09,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:09,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:09,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:09,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,002 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 13:14:10,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:14:10,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 13:14:10,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 13:14:10,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 13:14:10,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 13:14:10,024 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-11-10 13:14:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:10,087 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-10 13:14:10,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 13:14:10,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 13:14:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:10,094 INFO L225 Difference]: With dead ends: 36 [2018-11-10 13:14:10,094 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 13:14:10,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 13:14:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 13:14:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-10 13:14:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 13:14:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-10 13:14:10,127 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2018-11-10 13:14:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:10,127 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-10 13:14:10,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 13:14:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-10 13:14:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 13:14:10,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:10,129 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:10,129 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:10,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash 40504409, now seen corresponding path program 1 times [2018-11-10 13:14:10,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:10,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:10,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:10,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,184 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 13:14:10,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:14:10,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 13:14:10,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 13:14:10,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 13:14:10,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 13:14:10,189 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2018-11-10 13:14:10,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:10,258 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-11-10 13:14:10,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 13:14:10,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-10 13:14:10,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:10,259 INFO L225 Difference]: With dead ends: 33 [2018-11-10 13:14:10,259 INFO L226 Difference]: Without dead ends: 29 [2018-11-10 13:14:10,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-10 13:14:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-10 13:14:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-10 13:14:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 13:14:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-10 13:14:10,265 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2018-11-10 13:14:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:10,265 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-10 13:14:10,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 13:14:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-10 13:14:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-10 13:14:10,266 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:10,266 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:10,267 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:10,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:10,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1029702107, now seen corresponding path program 1 times [2018-11-10 13:14:10,267 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:10,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:10,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:10,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 13:14:10,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:14:10,355 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/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 13:14:10,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:14:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 13:14:10,420 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:14:10,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 13:14:10,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 13:14:10,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 13:14:10,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-10 13:14:10,421 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-11-10 13:14:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:10,481 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-11-10 13:14:10,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 13:14:10,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-10 13:14:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:10,483 INFO L225 Difference]: With dead ends: 39 [2018-11-10 13:14:10,483 INFO L226 Difference]: Without dead ends: 35 [2018-11-10 13:14:10,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-10 13:14:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-10 13:14:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2018-11-10 13:14:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 13:14:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-11-10 13:14:10,488 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2018-11-10 13:14:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:10,488 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-11-10 13:14:10,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 13:14:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-11-10 13:14:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 13:14:10,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:10,489 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:10,490 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:10,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash -559715991, now seen corresponding path program 1 times [2018-11-10 13:14:10,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:10,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:10,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:10,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 13:14:10,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:14:10,566 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/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 13:14:10,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:14:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 13:14:10,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:14:10,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 13:14:10,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 13:14:10,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 13:14:10,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 13:14:10,618 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 9 states. [2018-11-10 13:14:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:10,699 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-11-10 13:14:10,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 13:14:10,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-11-10 13:14:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:10,700 INFO L225 Difference]: With dead ends: 45 [2018-11-10 13:14:10,700 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 13:14:10,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-10 13:14:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 13:14:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-11-10 13:14:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-10 13:14:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-11-10 13:14:10,705 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2018-11-10 13:14:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:10,706 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-11-10 13:14:10,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 13:14:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-11-10 13:14:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-10 13:14:10,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:10,707 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:10,707 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:10,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2003326827, now seen corresponding path program 2 times [2018-11-10 13:14:10,707 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:10,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:10,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:10,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 13:14:10,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:14:10,793 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/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 13:14:10,805 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 13:14:10,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 13:14:10,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 13:14:10,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:14:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-10 13:14:10,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:14:10,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-10 13:14:10,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 13:14:10,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 13:14:10,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 13:14:10,849 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 10 states. [2018-11-10 13:14:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:10,933 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-10 13:14:10,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 13:14:10,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-10 13:14:10,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:10,934 INFO L225 Difference]: With dead ends: 51 [2018-11-10 13:14:10,934 INFO L226 Difference]: Without dead ends: 47 [2018-11-10 13:14:10,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-10 13:14:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-10 13:14:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2018-11-10 13:14:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-10 13:14:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-11-10 13:14:10,938 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2018-11-10 13:14:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:10,938 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-11-10 13:14:10,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 13:14:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-11-10 13:14:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-10 13:14:10,939 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:10,939 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:10,940 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:10,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1197899385, now seen corresponding path program 2 times [2018-11-10 13:14:10,940 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:10,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:10,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 13:14:10,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-10 13:14:11,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:14:11,113 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/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 13:14:11,120 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 13:14:11,133 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 13:14:11,133 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 13:14:11,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:14:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-10 13:14:11,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:14:11,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-10 13:14:11,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 13:14:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 13:14:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-10 13:14:11,186 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2018-11-10 13:14:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:11,250 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-11-10 13:14:11,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 13:14:11,251 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2018-11-10 13:14:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:11,252 INFO L225 Difference]: With dead ends: 57 [2018-11-10 13:14:11,252 INFO L226 Difference]: Without dead ends: 53 [2018-11-10 13:14:11,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-10 13:14:11,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-10 13:14:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2018-11-10 13:14:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 13:14:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-11-10 13:14:11,258 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2018-11-10 13:14:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:11,259 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-11-10 13:14:11,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 13:14:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-11-10 13:14:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-10 13:14:11,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:11,260 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:11,260 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:11,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash 706413819, now seen corresponding path program 3 times [2018-11-10 13:14:11,261 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:11,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:11,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:11,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 13:14:11,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-10 13:14:11,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:14:11,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-10 13:14:11,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 13:14:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 13:14:11,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-10 13:14:11,345 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2018-11-10 13:14:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:11,419 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-11-10 13:14:11,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 13:14:11,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2018-11-10 13:14:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:11,420 INFO L225 Difference]: With dead ends: 63 [2018-11-10 13:14:11,420 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 13:14:11,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-10 13:14:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 13:14:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-10 13:14:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 13:14:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-10 13:14:11,425 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 49 [2018-11-10 13:14:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:11,425 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-10 13:14:11,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 13:14:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-10 13:14:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-10 13:14:11,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:14:11,426 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:14:11,426 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:14:11,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1492956279, now seen corresponding path program 3 times [2018-11-10 13:14:11,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:11,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:11,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 13:14:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:14:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-10 13:14:11,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:14:11,576 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/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 13:14:11,581 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 13:14:11,594 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 13:14:11,594 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 13:14:11,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:14:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-10 13:14:11,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 13:14:11,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2018-11-10 13:14:11,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-10 13:14:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 13:14:11,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2018-11-10 13:14:11,764 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 24 states. [2018-11-10 13:14:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:14:12,156 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-11-10 13:14:12,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 13:14:12,156 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2018-11-10 13:14:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:14:12,157 INFO L225 Difference]: With dead ends: 68 [2018-11-10 13:14:12,157 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 13:14:12,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 13:14:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 13:14:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 13:14:12,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 13:14:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 13:14:12,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2018-11-10 13:14:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:14:12,159 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 13:14:12,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-10 13:14:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 13:14:12,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 13:14:12,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 13:14:12,217 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= |id2_#in~x| id2_~x) (<= id2_~x |id2_#in~x|) (not (= id2_~x 0))) [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L428 ceAbstractionStarter]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 13:14:12,218 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-10 13:14:12,218 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L421 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L421 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (and (<= |id_#in~x| id_~x) (<= id_~x |id_#in~x|)) [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-10 13:14:12,219 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2018-11-10 13:14:12,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:14:12 BoogieIcfgContainer [2018-11-10 13:14:12,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 13:14:12,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:14:12,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:14:12,221 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:14:12,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:14:09" (3/4) ... [2018-11-10 13:14:12,223 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 13:14:12,227 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 13:14:12,228 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-11-10 13:14:12,228 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 13:14:12,228 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-10 13:14:12,231 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 13:14:12,231 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 13:14:12,231 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 13:14:12,260 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4a1314df-25eb-4248-a516-81af5a003a5d/bin-2019/uautomizer/witness.graphml [2018-11-10 13:14:12,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:14:12,261 INFO L168 Benchmark]: Toolchain (without parser) took 2811.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -119.2 MB). Peak memory consumption was 77.9 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:12,262 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:14:12,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.06 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:12,262 INFO L168 Benchmark]: Boogie Preprocessor took 19.80 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:14:12,262 INFO L168 Benchmark]: RCFGBuilder took 183.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:12,263 INFO L168 Benchmark]: TraceAbstraction took 2433.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:12,263 INFO L168 Benchmark]: Witness Printer took 39.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:12,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.06 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.80 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -158.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2433.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 177 SDtfs, 142 SDslu, 1123 SDs, 0 SdLazy, 720 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 31 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 463 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 53892 SizeOfPredicates, 25 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 215/312 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...