./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.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_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/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 fb13e67548d34af589d64a91d36af5946c1dd198 ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:55:04,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:55:04,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:55:04,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:55:04,475 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:55:04,476 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:55:04,477 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:55:04,478 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:55:04,479 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:55:04,480 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:55:04,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:55:04,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:55:04,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:55:04,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:55:04,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:55:04,483 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:55:04,483 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:55:04,484 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:55:04,486 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:55:04,487 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:55:04,488 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:55:04,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:55:04,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:55:04,490 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:55:04,490 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:55:04,491 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:55:04,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:55:04,492 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:55:04,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:55:04,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:55:04,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:55:04,494 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:55:04,495 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:55:04,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:55:04,495 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:55:04,496 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:55:04,496 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:55:04,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:55:04,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:55:04,507 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:55:04,507 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:55:04,507 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:55:04,508 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:55:04,508 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:55:04,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:55:04,509 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:55:04,510 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:55:04,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:55:04,510 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_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/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 -> fb13e67548d34af589d64a91d36af5946c1dd198 [2018-11-10 04:55:04,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:55:04,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:55:04,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:55:04,543 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:55:04,543 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:55:04,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-10 04:55:04,580 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/data/d5e995182/ba2da954170e498ab447d5628ec47c11/FLAG429d5b0cb [2018-11-10 04:55:04,972 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:55:04,973 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-10 04:55:04,977 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/data/d5e995182/ba2da954170e498ab447d5628ec47c11/FLAG429d5b0cb [2018-11-10 04:55:04,986 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/data/d5e995182/ba2da954170e498ab447d5628ec47c11 [2018-11-10 04:55:04,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:55:04,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:55:04,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:55:04,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:55:04,991 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:55:04,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:55:04" (1/1) ... [2018-11-10 04:55:04,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ccf4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:04, skipping insertion in model container [2018-11-10 04:55:04,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:55:04" (1/1) ... [2018-11-10 04:55:04,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:55:05,011 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:55:05,106 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:55:05,108 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:55:05,118 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:55:05,126 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:55:05,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05 WrapperNode [2018-11-10 04:55:05,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:55:05,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:55:05,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:55:05,127 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:55:05,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... [2018-11-10 04:55:05,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:55:05,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:55:05,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:55:05,144 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:55:05,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/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 04:55:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:55:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:55:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 04:55:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:55:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:55:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 04:55:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 04:55:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:55:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:55:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:55:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:55:05,326 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:55:05,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:05 BoogieIcfgContainer [2018-11-10 04:55:05,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:55:05,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:55:05,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:55:05,329 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:55:05,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:55:04" (1/3) ... [2018-11-10 04:55:05,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57104fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:55:05, skipping insertion in model container [2018-11-10 04:55:05,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:05" (2/3) ... [2018-11-10 04:55:05,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57104fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:55:05, skipping insertion in model container [2018-11-10 04:55:05,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:05" (3/3) ... [2018-11-10 04:55:05,331 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-10 04:55:05,337 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:55:05,342 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:55:05,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:55:05,374 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:55:05,375 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:55:05,375 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:55:05,375 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:55:05,375 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:55:05,375 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:55:05,375 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:55:05,375 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:55:05,376 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:55:05,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-10 04:55:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 04:55:05,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:05,396 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:05,398 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:05,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:05,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-11-10 04:55:05,404 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:05,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:05,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:05,487 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 04:55:05,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:05,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:55:05,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:55:05,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:55:05,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:55:05,500 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-10 04:55:05,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:05,516 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-10 04:55:05,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:55:05,517 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-10 04:55:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:05,525 INFO L225 Difference]: With dead ends: 32 [2018-11-10 04:55:05,525 INFO L226 Difference]: Without dead ends: 13 [2018-11-10 04:55:05,528 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 04:55:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-10 04:55:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-10 04:55:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-10 04:55:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-10 04:55:05,555 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-10 04:55:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:05,555 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-10 04:55:05,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:55:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-10 04:55:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 04:55:05,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:05,556 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:05,557 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:05,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:05,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1335306055, now seen corresponding path program 1 times [2018-11-10 04:55:05,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:05,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:05,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:05,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:05,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:05,589 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 04:55:05,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:05,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:55:05,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:55:05,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:55:05,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:55:05,591 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-11-10 04:55:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:05,607 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-10 04:55:05,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:55:05,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-10 04:55:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:05,608 INFO L225 Difference]: With dead ends: 20 [2018-11-10 04:55:05,608 INFO L226 Difference]: Without dead ends: 15 [2018-11-10 04:55:05,609 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 04:55:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-10 04:55:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-10 04:55:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-10 04:55:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-10 04:55:05,612 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-10 04:55:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:05,612 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-10 04:55:05,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:55:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-10 04:55:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 04:55:05,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:05,613 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:05,613 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:05,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:05,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1931535679, now seen corresponding path program 1 times [2018-11-10 04:55:05,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:05,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:05,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:05,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:05,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:05,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:55:05,761 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/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 04:55:05,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:05,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:05,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:55:05,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-11-10 04:55:05,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:55:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:55:05,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:55:05,928 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 11 states. [2018-11-10 04:55:06,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:06,009 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-10 04:55:06,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 04:55:06,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-11-10 04:55:06,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:06,010 INFO L225 Difference]: With dead ends: 22 [2018-11-10 04:55:06,010 INFO L226 Difference]: Without dead ends: 17 [2018-11-10 04:55:06,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:55:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-10 04:55:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 04:55:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 04:55:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-10 04:55:06,015 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-10 04:55:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:06,015 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-10 04:55:06,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:55:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-10 04:55:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 04:55:06,015 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:06,016 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:06,016 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:06,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1745348677, now seen corresponding path program 2 times [2018-11-10 04:55:06,016 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:06,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:06,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:06,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:06,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 04:55:06,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:55:06,133 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/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 04:55:06,148 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:55:06,158 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:55:06,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:55:06,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:06,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:55:06,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-10 04:55:06,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 04:55:06,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 04:55:06,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:55:06,283 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-11-10 04:55:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:06,407 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-10 04:55:06,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:55:06,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-11-10 04:55:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:06,408 INFO L225 Difference]: With dead ends: 20 [2018-11-10 04:55:06,408 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 04:55:06,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-10 04:55:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 04:55:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 04:55:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 04:55:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 04:55:06,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-10 04:55:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:06,409 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:55:06,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 04:55:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:55:06,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 04:55:06,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 04:55:06,500 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 04:55:06,500 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:55:06,500 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:55:06,500 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 04:55:06,500 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 04:55:06,500 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 04:55:06,501 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-11-10 04:55:06,501 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-11-10 04:55:06,501 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-10 04:55:06,501 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-10 04:55:06,501 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-10 04:55:06,501 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2018-11-10 04:55:06,501 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-11-10 04:55:06,502 INFO L421 ceAbstractionStarter]: At program point L16-4(lines 16 20) the Hoare annotation is: (or (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) (and (<= main_~lo~0 1) (exists ((v_main_~mid~0_8 Int)) (and (< 0 v_main_~mid~0_8) (= (* 2 v_main_~mid~0_8) (+ main_~hi~0 1)) (<= v_main_~mid~0_8 (+ main_~mid~0 1)))) (<= 1 main_~lo~0) (exists ((v_main_~mid~0_8 Int)) (and (< 0 v_main_~mid~0_8) (= (* 2 v_main_~mid~0_8) (+ main_~hi~0 1)) (<= v_main_~mid~0_8 1))))) [2018-11-10 04:55:06,502 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 04:55:06,502 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 04:55:06,502 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 04:55:06,502 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 04:55:06,502 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 04:55:06,502 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 04:55:06,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:55:06 BoogieIcfgContainer [2018-11-10 04:55:06,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:55:06,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:55:06,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:55:06,512 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:55:06,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:05" (3/4) ... [2018-11-10 04:55:06,515 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 04:55:06,520 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 04:55:06,520 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 04:55:06,520 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 04:55:06,523 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-10 04:55:06,523 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 04:55:06,523 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 04:55:06,552 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eafa232f-07d9-466c-a9c9-8d7ffd5e0266/bin-2019/uautomizer/witness.graphml [2018-11-10 04:55:06,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:55:06,552 INFO L168 Benchmark]: Toolchain (without parser) took 1564.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 958.5 MB in the beginning and 976.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 111.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:06,553 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:55:06,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.56 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:06,554 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 ms. Allocated memory is still 1.0 GB. Free memory is still 947.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:55:06,554 INFO L168 Benchmark]: RCFGBuilder took 182.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.6 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:06,555 INFO L168 Benchmark]: TraceAbstraction took 1184.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.9 MB in the end (delta: 141.6 MB). Peak memory consumption was 141.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:06,556 INFO L168 Benchmark]: Witness Printer took 40.05 ms. Allocated memory is still 1.2 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:55:06,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.56 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.89 ms. Allocated memory is still 1.0 GB. Free memory is still 947.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 182.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 947.6 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1184.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.9 MB in the end (delta: 141.6 MB). Peak memory consumption was 141.6 MB. Max. memory is 11.5 GB. * Witness Printer took 40.05 ms. Allocated memory is still 1.2 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 13 SDslu, 104 SDs, 0 SdLazy, 71 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 6 QuantifiedInterpolants, 6587 SizeOfPredicates, 6 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 2/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...