./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/ddlm2013_true-unreach-call.i --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_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/ddlm2013_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 17744505b3a424a40a1b2449004fea58677c1b94 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 04:03:18,013 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:03:18,014 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:03:18,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:03:18,023 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:03:18,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:03:18,024 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:03:18,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:03:18,027 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:03:18,027 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:03:18,028 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:03:18,028 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:03:18,029 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:03:18,030 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:03:18,031 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:03:18,031 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:03:18,032 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:03:18,034 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:03:18,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:03:18,036 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:03:18,037 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:03:18,038 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:03:18,040 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:03:18,040 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:03:18,040 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:03:18,041 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:03:18,041 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:03:18,042 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:03:18,043 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:03:18,043 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:03:18,044 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:03:18,044 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:03:18,044 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:03:18,044 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:03:18,045 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:03:18,046 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:03:18,046 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:03:18,056 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:03:18,056 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:03:18,057 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:03:18,057 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:03:18,058 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:03:18,058 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:03:18,058 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:03:18,058 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:03:18,058 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:03:18,058 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:03:18,059 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:03:18,060 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:03:18,060 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:03:18,060 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:03:18,060 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:03:18,060 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:03:18,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:03:18,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:03:18,061 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:03:18,061 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:03:18,061 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:03:18,061 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:03:18,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:03:18,061 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_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 -> 17744505b3a424a40a1b2449004fea58677c1b94 [2018-11-10 04:03:18,086 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:03:18,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:03:18,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:03:18,097 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:03:18,097 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:03:18,098 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/ddlm2013_true-unreach-call.i [2018-11-10 04:03:18,139 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/data/b03b127c9/1cc1758d0859435380c6ec5ea412812f/FLAG1e3e10bb2 [2018-11-10 04:03:18,501 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:03:18,502 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/sv-benchmarks/c/loop-lit/ddlm2013_true-unreach-call.i [2018-11-10 04:03:18,506 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/data/b03b127c9/1cc1758d0859435380c6ec5ea412812f/FLAG1e3e10bb2 [2018-11-10 04:03:18,518 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/data/b03b127c9/1cc1758d0859435380c6ec5ea412812f [2018-11-10 04:03:18,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:03:18,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:03:18,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:03:18,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:03:18,529 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:03:18,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4541c043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18, skipping insertion in model container [2018-11-10 04:03:18,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:03:18,560 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:03:18,692 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:03:18,694 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:03:18,706 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:03:18,716 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:03:18,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18 WrapperNode [2018-11-10 04:03:18,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:03:18,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:03:18,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:03:18,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:03:18,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... [2018-11-10 04:03:18,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:03:18,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:03:18,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:03:18,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:03:18,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:03:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:03:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 04:03:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:03:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:03:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 04:03:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 04:03:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:03:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:03:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:03:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:03:18,985 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:03:18,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:03:18 BoogieIcfgContainer [2018-11-10 04:03:18,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:03:18,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:03:18,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:03:18,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:03:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:03:18" (1/3) ... [2018-11-10 04:03:18,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6d4658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:03:18, skipping insertion in model container [2018-11-10 04:03:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:03:18" (2/3) ... [2018-11-10 04:03:18,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6d4658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:03:18, skipping insertion in model container [2018-11-10 04:03:18,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:03:18" (3/3) ... [2018-11-10 04:03:18,993 INFO L112 eAbstractionObserver]: Analyzing ICFG ddlm2013_true-unreach-call.i [2018-11-10 04:03:19,001 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:03:19,007 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:03:19,019 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:03:19,044 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:03:19,044 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:03:19,045 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:03:19,045 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:03:19,045 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:03:19,045 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:03:19,045 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:03:19,045 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:03:19,045 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:03:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-10 04:03:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 04:03:19,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:19,065 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:19,068 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:19,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:19,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2066841578, now seen corresponding path program 1 times [2018-11-10 04:03:19,073 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:19,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:19,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:19,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:19,152 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 04:03:19,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:03:19,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:03:19,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:03:19,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:03:19,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:03:19,167 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-10 04:03:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:19,184 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-11-10 04:03:19,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:03:19,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-10 04:03:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:19,194 INFO L225 Difference]: With dead ends: 36 [2018-11-10 04:03:19,194 INFO L226 Difference]: Without dead ends: 16 [2018-11-10 04:03:19,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:03:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-10 04:03:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-10 04:03:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 04:03:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-10 04:03:19,222 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-11-10 04:03:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:19,222 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-10 04:03:19,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:03:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-10 04:03:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 04:03:19,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:19,223 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:19,223 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:19,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:19,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1651906282, now seen corresponding path program 1 times [2018-11-10 04:03:19,224 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:19,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:19,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:19,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:19,308 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 04:03:19,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:03:19,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:03:19,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:03:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:03:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:03:19,310 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-11-10 04:03:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:19,343 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-10 04:03:19,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:03:19,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 04:03:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:19,344 INFO L225 Difference]: With dead ends: 25 [2018-11-10 04:03:19,344 INFO L226 Difference]: Without dead ends: 19 [2018-11-10 04:03:19,344 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 04:03:19,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-10 04:03:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-10 04:03:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 04:03:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-10 04:03:19,348 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-11-10 04:03:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:19,348 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-10 04:03:19,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:03:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-10 04:03:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 04:03:19,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:19,349 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:19,349 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:19,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1973708347, now seen corresponding path program 1 times [2018-11-10 04:03:19,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:19,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:19,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:19,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:03:19,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:19,535 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:19,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:19,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:03:19,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:03:19,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-10 04:03:19,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 04:03:19,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 04:03:19,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:03:19,682 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 12 states. [2018-11-10 04:03:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:19,730 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-10 04:03:19,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 04:03:19,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2018-11-10 04:03:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:19,731 INFO L225 Difference]: With dead ends: 32 [2018-11-10 04:03:19,731 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 04:03:19,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:03:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 04:03:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2018-11-10 04:03:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 04:03:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-11-10 04:03:19,736 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2018-11-10 04:03:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:19,736 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-11-10 04:03:19,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 04:03:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-11-10 04:03:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 04:03:19,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:19,737 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:19,737 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:19,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:19,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1386902333, now seen corresponding path program 1 times [2018-11-10 04:03:19,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:19,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:19,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:19,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:19,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:03:19,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:03:19,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:03:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:03:19,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:03:19,779 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2018-11-10 04:03:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:19,793 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-10 04:03:19,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:03:19,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-10 04:03:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:19,794 INFO L225 Difference]: With dead ends: 36 [2018-11-10 04:03:19,794 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 04:03:19,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:03:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 04:03:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-10 04:03:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 04:03:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-10 04:03:19,797 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2018-11-10 04:03:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:19,797 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-10 04:03:19,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:03:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-10 04:03:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 04:03:19,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:19,798 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:19,798 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:19,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:19,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1807628064, now seen corresponding path program 2 times [2018-11-10 04:03:19,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:19,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:19,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:19,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:03:19,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:19,986 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:19,995 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:03:20,010 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:03:20,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:03:20,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:03:20,268 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:03:20,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-10 04:03:20,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 04:03:20,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 04:03:20,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-11-10 04:03:20,270 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 16 states. [2018-11-10 04:03:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:20,393 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-10 04:03:20,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:03:20,394 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2018-11-10 04:03:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:20,394 INFO L225 Difference]: With dead ends: 60 [2018-11-10 04:03:20,394 INFO L226 Difference]: Without dead ends: 37 [2018-11-10 04:03:20,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-11-10 04:03:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-10 04:03:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2018-11-10 04:03:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 04:03:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-10 04:03:20,398 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2018-11-10 04:03:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:20,398 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-10 04:03:20,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 04:03:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-10 04:03:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 04:03:20,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:20,399 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:20,399 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:20,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:20,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1736007175, now seen corresponding path program 1 times [2018-11-10 04:03:20,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:20,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:20,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:20,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:03:20,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:20,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:20,488 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:20,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:20,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:20,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:03:20,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-10 04:03:20,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:03:20,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:03:20,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:03:20,570 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2018-11-10 04:03:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:20,587 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-11-10 04:03:20,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:03:20,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-11-10 04:03:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:20,588 INFO L225 Difference]: With dead ends: 47 [2018-11-10 04:03:20,588 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 04:03:20,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:03:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 04:03:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2018-11-10 04:03:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-10 04:03:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-11-10 04:03:20,593 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 26 [2018-11-10 04:03:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:20,593 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-11-10 04:03:20,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:03:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-11-10 04:03:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 04:03:20,594 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:20,594 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:20,595 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:20,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:20,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1538280364, now seen corresponding path program 2 times [2018-11-10 04:03:20,595 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:20,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:20,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:20,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:03:20,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:20,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:20,705 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:20,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:03:20,737 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:03:20,737 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:03:20,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:20,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:03:20,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 04:03:20,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:03:20,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:03:20,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:03:20,770 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2018-11-10 04:03:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:20,810 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-11-10 04:03:20,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:03:20,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-10 04:03:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:20,813 INFO L225 Difference]: With dead ends: 51 [2018-11-10 04:03:20,813 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 04:03:20,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:03:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 04:03:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-11-10 04:03:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 04:03:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-10 04:03:20,818 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2018-11-10 04:03:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:20,818 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-10 04:03:20,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:03:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-10 04:03:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 04:03:20,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:20,819 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:20,819 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:20,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:20,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1505615569, now seen corresponding path program 3 times [2018-11-10 04:03:20,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:20,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:20,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:20,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:03:20,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:20,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:20,925 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:20,939 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:03:20,972 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 04:03:20,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:03:20,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-10 04:03:21,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:03:21,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-11-10 04:03:21,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 04:03:21,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 04:03:21,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:03:21,030 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2018-11-10 04:03:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:21,091 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-11-10 04:03:21,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 04:03:21,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-11-10 04:03:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:21,092 INFO L225 Difference]: With dead ends: 55 [2018-11-10 04:03:21,092 INFO L226 Difference]: Without dead ends: 42 [2018-11-10 04:03:21,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:03:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-10 04:03:21,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-11-10 04:03:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 04:03:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-10 04:03:21,096 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2018-11-10 04:03:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:21,097 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-10 04:03:21,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 04:03:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-10 04:03:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 04:03:21,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:21,098 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:21,098 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:21,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash -883149448, now seen corresponding path program 4 times [2018-11-10 04:03:21,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:21,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:21,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:21,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:03:21,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:21,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:21,221 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/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 04:03:21,232 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:03:21,257 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:03:21,257 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:03:21,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 35 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:03:21,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:03:21,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 04:03:21,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 04:03:21,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 04:03:21,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:03:21,311 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 8 states. [2018-11-10 04:03:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:21,384 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-11-10 04:03:21,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 04:03:21,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-11-10 04:03:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:21,394 INFO L225 Difference]: With dead ends: 59 [2018-11-10 04:03:21,394 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 04:03:21,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:03:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 04:03:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-10 04:03:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 04:03:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-11-10 04:03:21,399 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2018-11-10 04:03:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:21,399 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-11-10 04:03:21,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 04:03:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-11-10 04:03:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 04:03:21,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:03:21,400 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:03:21,401 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:03:21,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:03:21,401 INFO L82 PathProgramCache]: Analyzing trace with hash 638243741, now seen corresponding path program 5 times [2018-11-10 04:03:21,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:03:21,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:03:21,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:21,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:03:21,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:03:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:03:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:03:21,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:03:21,540 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 04:03:21,547 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:03:21,571 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-10 04:03:21,572 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:03:21,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:03:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-10 04:03:21,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:03:21,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2018-11-10 04:03:21,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:03:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:03:21,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:03:21,643 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 11 states. [2018-11-10 04:03:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:03:21,741 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-11-10 04:03:21,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:03:21,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2018-11-10 04:03:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:03:21,742 INFO L225 Difference]: With dead ends: 54 [2018-11-10 04:03:21,742 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 04:03:21,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:03:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 04:03:21,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 04:03:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 04:03:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 04:03:21,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-11-10 04:03:21,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:03:21,744 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:03:21,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:03:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:03:21,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 04:03:21,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 04:03:21,779 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 04:03:21,780 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 35) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point L25-2(lines 10 35) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 30) no Hoare annotation was computed. [2018-11-10 04:03:21,780 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 30) no Hoare annotation was computed. [2018-11-10 04:03:21,781 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 10 35) no Hoare annotation was computed. [2018-11-10 04:03:21,781 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 35) no Hoare annotation was computed. [2018-11-10 04:03:21,781 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0)) [2018-11-10 04:03:21,781 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 35) the Hoare annotation is: true [2018-11-10 04:03:21,781 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2018-11-10 04:03:21,781 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 04:03:21,781 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 04:03:21,781 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 04:03:21,782 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 04:03:21,782 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 04:03:21,782 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 04:03:21,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:03:21 BoogieIcfgContainer [2018-11-10 04:03:21,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:03:21,785 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:03:21,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:03:21,785 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:03:21,786 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:03:18" (3/4) ... [2018-11-10 04:03:21,789 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 04:03:21,795 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 04:03:21,795 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 04:03:21,795 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 04:03:21,799 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-10 04:03:21,799 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 04:03:21,799 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 04:03:21,799 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 04:03:21,837 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c57a5d21-38e3-46fa-9b07-6fdda4a8389c/bin-2019/uautomizer/witness.graphml [2018-11-10 04:03:21,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:03:21,838 INFO L168 Benchmark]: Toolchain (without parser) took 3315.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -242.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:03:21,839 INFO L168 Benchmark]: CDTParser took 0.12 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 04:03:21,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.13 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:03:21,840 INFO L168 Benchmark]: Boogie Preprocessor took 25.54 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:03:21,840 INFO L168 Benchmark]: RCFGBuilder took 243.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:03:21,841 INFO L168 Benchmark]: TraceAbstraction took 2798.27 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -65.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:03:21,841 INFO L168 Benchmark]: Witness Printer took 52.77 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:03:21,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.13 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.54 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 243.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2798.27 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -65.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 52.77 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 4 procedures, 23 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 212 SDtfs, 48 SDslu, 746 SDs, 0 SdLazy, 478 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 206 SyntacticMatches, 7 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=9, 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, 10 MinimizatonAttempts, 25 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 19 PreInvPairs, 24 NumberOfFragments, 12 HoareAnnotationTreeSize, 19 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 464 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 447 ConstructedInterpolants, 0 QuantifiedInterpolants, 50911 SizeOfPredicates, 11 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 373/619 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...