./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 305e9c546a6cc2591d6267bc612ab5ec3e8adaa4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:07:46,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:07:46,396 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:07:46,404 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:07:46,404 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:07:46,405 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:07:46,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:07:46,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:07:46,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:07:46,409 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:07:46,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:07:46,410 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:07:46,411 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:07:46,411 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:07:46,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:07:46,413 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:07:46,414 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:07:46,415 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:07:46,417 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:07:46,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:07:46,419 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:07:46,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:07:46,422 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:07:46,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:07:46,422 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:07:46,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:07:46,424 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:07:46,425 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:07:46,425 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:07:46,426 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:07:46,427 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:07:46,427 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:07:46,427 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:07:46,428 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:07:46,428 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:07:46,429 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:07:46,429 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 15:07:46,442 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:07:46,442 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:07:46,443 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:07:46,443 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 15:07:46,443 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:07:46,443 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:07:46,443 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:07:46,444 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:07:46,444 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:07:46,444 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:07:46,444 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:07:46,444 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:07:46,444 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:07:46,445 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:07:46,445 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:07:46,445 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:07:46,445 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:07:46,445 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:07:46,445 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:07:46,445 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:07:46,446 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:07:46,446 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:07:46,447 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:07:46,447 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:07:46,447 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_1da8432e-5a3c-4597-86eb-fecaba846c20/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 -> 305e9c546a6cc2591d6267bc612ab5ec3e8adaa4 [2018-11-18 15:07:46,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:07:46,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:07:46,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:07:46,484 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:07:46,484 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:07:46,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-11-18 15:07:46,526 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/data/f13118b74/92372839aea64617b1d3c1259d3b3125/FLAG5674b7828 [2018-11-18 15:07:46,861 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:07:46,861 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/sv-benchmarks/c/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-11-18 15:07:46,867 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/data/f13118b74/92372839aea64617b1d3c1259d3b3125/FLAG5674b7828 [2018-11-18 15:07:47,289 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/data/f13118b74/92372839aea64617b1d3c1259d3b3125 [2018-11-18 15:07:47,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:07:47,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 15:07:47,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:07:47,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:07:47,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:07:47,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6031922f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47, skipping insertion in model container [2018-11-18 15:07:47,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:07:47,323 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:07:47,439 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:07:47,442 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:07:47,453 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:07:47,462 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:07:47,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47 WrapperNode [2018-11-18 15:07:47,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:07:47,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:07:47,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:07:47,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:07:47,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... [2018-11-18 15:07:47,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:07:47,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:07:47,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:07:47,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:07:47,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:07:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:07:47,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 15:07:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:07:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:07:47,682 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:07:47,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:07:47 BoogieIcfgContainer [2018-11-18 15:07:47,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:07:47,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:07:47,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:07:47,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:07:47,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:07:47" (1/3) ... [2018-11-18 15:07:47,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f823a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:07:47, skipping insertion in model container [2018-11-18 15:07:47,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:07:47" (2/3) ... [2018-11-18 15:07:47,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f823a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:07:47, skipping insertion in model container [2018-11-18 15:07:47,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:07:47" (3/3) ... [2018-11-18 15:07:47,689 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle_true-unreach-call_true-termination.i [2018-11-18 15:07:47,696 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:07:47,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 15:07:47,712 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 15:07:47,737 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:07:47,737 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:07:47,737 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:07:47,737 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:07:47,738 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:07:47,738 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:07:47,738 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:07:47,738 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:07:47,738 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:07:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-18 15:07:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 15:07:47,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:47,758 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:47,760 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:47,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:47,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1538012201, now seen corresponding path program 1 times [2018-11-18 15:07:47,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:47,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:47,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:47,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:47,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:07:47,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:07:47,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:07:47,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:07:47,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:07:47,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:07:47,882 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-11-18 15:07:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:47,901 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2018-11-18 15:07:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:07:47,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-18 15:07:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:47,909 INFO L225 Difference]: With dead ends: 63 [2018-11-18 15:07:47,909 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 15:07:47,912 INFO L604 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 [2018-11-18 15:07:47,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 15:07:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 15:07:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 15:07:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2018-11-18 15:07:47,941 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 14 [2018-11-18 15:07:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:47,942 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2018-11-18 15:07:47,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:07:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2018-11-18 15:07:47,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 15:07:47,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:47,943 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:47,943 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:47,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:47,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1856547447, now seen corresponding path program 1 times [2018-11-18 15:07:47,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:47,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:47,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:47,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:47,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:07:48,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:07:48,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:07:48,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 15:07:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:07:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:07:48,011 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 5 states. [2018-11-18 15:07:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:48,118 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-11-18 15:07:48,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:07:48,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-18 15:07:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:48,119 INFO L225 Difference]: With dead ends: 36 [2018-11-18 15:07:48,119 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 15:07:48,120 INFO L604 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 [2018-11-18 15:07:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 15:07:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 15:07:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 15:07:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-11-18 15:07:48,128 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 16 [2018-11-18 15:07:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:48,128 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-11-18 15:07:48,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 15:07:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-11-18 15:07:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 15:07:48,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:48,129 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:48,129 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:48,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:48,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1929535109, now seen corresponding path program 1 times [2018-11-18 15:07:48,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:48,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:48,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:48,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:48,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:07:48,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:48,224 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:48,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:07:48,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:07:48,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2018-11-18 15:07:48,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 15:07:48,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 15:07:48,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 15:07:48,332 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 11 states. [2018-11-18 15:07:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:48,495 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2018-11-18 15:07:48,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 15:07:48,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-11-18 15:07:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:48,497 INFO L225 Difference]: With dead ends: 54 [2018-11-18 15:07:48,497 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 15:07:48,497 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-18 15:07:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 15:07:48,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2018-11-18 15:07:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 15:07:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-11-18 15:07:48,507 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 21 [2018-11-18 15:07:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:48,507 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-11-18 15:07:48,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 15:07:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-11-18 15:07:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 15:07:48,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:48,509 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:48,509 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:48,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1060690802, now seen corresponding path program 1 times [2018-11-18 15:07:48,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:48,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:48,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:48,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:48,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 15:07:48,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:48,602 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:48,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 15:07:48,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:07:48,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2018-11-18 15:07:48,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 15:07:48,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 15:07:48,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-18 15:07:48,662 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 10 states. [2018-11-18 15:07:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:48,836 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-18 15:07:48,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 15:07:48,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-11-18 15:07:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:48,837 INFO L225 Difference]: With dead ends: 61 [2018-11-18 15:07:48,837 INFO L226 Difference]: Without dead ends: 59 [2018-11-18 15:07:48,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-11-18 15:07:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-18 15:07:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2018-11-18 15:07:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-18 15:07:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-11-18 15:07:48,848 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 29 [2018-11-18 15:07:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:48,849 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-11-18 15:07:48,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 15:07:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-11-18 15:07:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 15:07:48,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:48,850 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:48,850 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:48,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:48,851 INFO L82 PathProgramCache]: Analyzing trace with hash 578348401, now seen corresponding path program 1 times [2018-11-18 15:07:48,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:48,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:48,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:48,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:48,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:07:48,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:48,913 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:48,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:48,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:07:48,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:07:48,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 13 [2018-11-18 15:07:48,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 15:07:49,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 15:07:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-18 15:07:49,000 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 13 states. [2018-11-18 15:07:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:49,204 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2018-11-18 15:07:49,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 15:07:49,204 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2018-11-18 15:07:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:49,205 INFO L225 Difference]: With dead ends: 77 [2018-11-18 15:07:49,206 INFO L226 Difference]: Without dead ends: 70 [2018-11-18 15:07:49,206 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-18 15:07:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-18 15:07:49,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2018-11-18 15:07:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 15:07:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2018-11-18 15:07:49,217 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 32 [2018-11-18 15:07:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:49,217 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2018-11-18 15:07:49,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 15:07:49,218 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2018-11-18 15:07:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 15:07:49,219 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:49,219 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:49,219 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:49,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:49,219 INFO L82 PathProgramCache]: Analyzing trace with hash 434465614, now seen corresponding path program 1 times [2018-11-18 15:07:49,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:49,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:49,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:49,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:49,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:07:49,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:49,303 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:49,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:49,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:07:49,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:07:49,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2018-11-18 15:07:49,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 15:07:49,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 15:07:49,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-18 15:07:49,424 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 14 states. [2018-11-18 15:07:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:49,603 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2018-11-18 15:07:49,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 15:07:49,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2018-11-18 15:07:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:49,604 INFO L225 Difference]: With dead ends: 79 [2018-11-18 15:07:49,604 INFO L226 Difference]: Without dead ends: 77 [2018-11-18 15:07:49,604 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-18 15:07:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-18 15:07:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2018-11-18 15:07:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-18 15:07:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2018-11-18 15:07:49,611 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 34 [2018-11-18 15:07:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:49,612 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2018-11-18 15:07:49,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 15:07:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2018-11-18 15:07:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 15:07:49,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:49,613 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:49,613 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:49,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2058374368, now seen corresponding path program 1 times [2018-11-18 15:07:49,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:49,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:49,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:49,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:49,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-18 15:07:49,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:49,717 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:49,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:49,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-11-18 15:07:49,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:07:49,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-11-18 15:07:49,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 15:07:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 15:07:49,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-11-18 15:07:49,882 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 18 states. [2018-11-18 15:07:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:50,248 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2018-11-18 15:07:50,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 15:07:50,248 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2018-11-18 15:07:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:50,250 INFO L225 Difference]: With dead ends: 112 [2018-11-18 15:07:50,250 INFO L226 Difference]: Without dead ends: 100 [2018-11-18 15:07:50,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2018-11-18 15:07:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-11-18 15:07:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-11-18 15:07:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-18 15:07:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2018-11-18 15:07:50,258 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 58 [2018-11-18 15:07:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:50,258 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2018-11-18 15:07:50,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 15:07:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2018-11-18 15:07:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 15:07:50,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:50,260 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:50,260 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:50,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:50,260 INFO L82 PathProgramCache]: Analyzing trace with hash 574589245, now seen corresponding path program 1 times [2018-11-18 15:07:50,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:50,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:50,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:50,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:50,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-11-18 15:07:50,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:50,341 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:50,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:50,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-18 15:07:50,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:07:50,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2018-11-18 15:07:50,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 15:07:50,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 15:07:50,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-18 15:07:50,415 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand 16 states. [2018-11-18 15:07:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:50,619 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2018-11-18 15:07:50,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 15:07:50,624 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2018-11-18 15:07:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:50,625 INFO L225 Difference]: With dead ends: 106 [2018-11-18 15:07:50,625 INFO L226 Difference]: Without dead ends: 104 [2018-11-18 15:07:50,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-18 15:07:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-18 15:07:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-11-18 15:07:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-18 15:07:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2018-11-18 15:07:50,639 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 60 [2018-11-18 15:07:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:50,639 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2018-11-18 15:07:50,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 15:07:50,639 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2018-11-18 15:07:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-18 15:07:50,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:50,641 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:50,641 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:50,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1079113108, now seen corresponding path program 2 times [2018-11-18 15:07:50,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:50,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:50,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:50,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:07:50,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-11-18 15:07:50,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:50,728 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/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 [2018-11-18 15:07:50,734 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:07:50,749 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:07:50,749 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:07:50,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 68 proven. 38 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-11-18 15:07:50,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:07:50,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 20 [2018-11-18 15:07:50,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 15:07:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 15:07:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-18 15:07:50,909 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 20 states. [2018-11-18 15:07:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:51,286 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2018-11-18 15:07:51,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 15:07:51,286 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2018-11-18 15:07:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:51,287 INFO L225 Difference]: With dead ends: 115 [2018-11-18 15:07:51,287 INFO L226 Difference]: Without dead ends: 113 [2018-11-18 15:07:51,288 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=1018, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 15:07:51,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-18 15:07:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2018-11-18 15:07:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-11-18 15:07:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2018-11-18 15:07:51,298 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 86 [2018-11-18 15:07:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:51,298 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2018-11-18 15:07:51,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 15:07:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2018-11-18 15:07:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-18 15:07:51,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:07:51,299 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:07:51,300 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:07:51,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:07:51,300 INFO L82 PathProgramCache]: Analyzing trace with hash -795584450, now seen corresponding path program 2 times [2018-11-18 15:07:51,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:07:51,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:07:51,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:51,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:07:51,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:07:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:07:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2018-11-18 15:07:51,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:07:51,434 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:07:51,442 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:07:51,466 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:07:51,466 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:07:51,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:07:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 118 proven. 29 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-11-18 15:07:51,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:07:51,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2018-11-18 15:07:51,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 15:07:51,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 15:07:51,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-11-18 15:07:51,633 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 20 states. [2018-11-18 15:07:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:07:51,960 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2018-11-18 15:07:51,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 15:07:51,960 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 110 [2018-11-18 15:07:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:07:51,961 INFO L225 Difference]: With dead ends: 108 [2018-11-18 15:07:51,961 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:07:51,962 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2018-11-18 15:07:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:07:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:07:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:07:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:07:51,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2018-11-18 15:07:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:07:51,963 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:07:51,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 15:07:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:07:51,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:07:51,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 15:07:52,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 15:07:52,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 15:07:52,150 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-11-18 15:07:52,610 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 15:07:52,610 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:07:52,610 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:07:52,610 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 15:07:52,610 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:07:52,610 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:07:52,610 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (let ((.cse5 (+ main_~buflim~0 2))) (let ((.cse0 (<= (+ main_~bufferlen~0 1) main_~inlen~0)) (.cse2 (<= 1 main_~in~0)) (.cse3 (<= (+ main_~buf~0 3) main_~bufferlen~0)) (.cse4 (<= .cse5 main_~bufferlen~0)) (.cse1 (<= main_~bufferlen~0 .cse5))) (or (and .cse0 (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) .cse1 (<= 3 main_~buf~0) .cse2 .cse3 .cse4) (and .cse0 .cse2 .cse3 .cse4 (<= main_~in~0 1) .cse1 (<= 1 main_~buf~0)) (and .cse0 (<= 0 main_~in~0) (<= main_~in~0 0) .cse3 (= main_~bufferlen~0 .cse5) (= main_~buf~0 0)) (and .cse0 .cse2 .cse3 .cse4 (<= main_~in~0 2) .cse1 (<= 2 main_~buf~0))))) [2018-11-18 15:07:52,610 INFO L421 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse5 (+ main_~buflim~0 2))) (let ((.cse2 (<= 1 main_~in~0)) (.cse4 (<= .cse5 main_~bufferlen~0)) (.cse1 (<= main_~bufferlen~0 .cse5)) (.cse0 (<= (+ main_~bufferlen~0 1) main_~inlen~0)) (.cse3 (<= (+ main_~buf~0 3) main_~bufferlen~0))) (or (and .cse0 (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) .cse1 (<= 3 main_~buf~0) .cse2 .cse3 .cse4) (and .cse0 .cse2 .cse3 .cse4 (<= main_~in~0 1) .cse1 (<= 1 main_~buf~0)) (and .cse0 .cse2 .cse3 .cse4 (<= main_~in~0 2) .cse1 (<= 2 main_~buf~0)) (and .cse0 (<= 0 main_~in~0) (<= main_~in~0 0) .cse3 (= main_~bufferlen~0 .cse5) (= main_~buf~0 0))))) [2018-11-18 15:07:52,610 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 42) no Hoare annotation was computed. [2018-11-18 15:07:52,611 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 23 34) no Hoare annotation was computed. [2018-11-18 15:07:52,611 INFO L425 ceAbstractionStarter]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2018-11-18 15:07:52,611 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-18 15:07:52,611 INFO L421 ceAbstractionStarter]: At program point L23-4(lines 23 34) the Hoare annotation is: (let ((.cse2 (<= 1 main_~in~0)) (.cse0 (<= 0 main_~buf~0)) (.cse3 (<= (+ main_~buf~0 2) main_~bufferlen~0))) (or (and (<= main_~buf~0 0) (<= 0 main_~in~0) .cse0 (<= 2 main_~bufferlen~0)) (let ((.cse1 (+ main_~buflim~0 2))) (and (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= main_~bufferlen~0 .cse1) .cse2 .cse0 (<= .cse1 main_~bufferlen~0) .cse3)) (and (<= main_~buf~0 2) .cse2 .cse0 (<= 3 main_~inlen~0) .cse3))) [2018-11-18 15:07:52,611 INFO L425 ceAbstractionStarter]: For program point L36(line 36) no Hoare annotation was computed. [2018-11-18 15:07:52,611 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (let ((.cse5 (+ main_~buflim~0 2))) (let ((.cse4 (<= (+ main_~buf~0 2) main_~bufferlen~0)) (.cse0 (<= (+ main_~bufferlen~0 1) main_~inlen~0)) (.cse1 (<= 1 main_~in~0)) (.cse2 (<= .cse5 main_~bufferlen~0)) (.cse3 (<= main_~bufferlen~0 .cse5))) (or (and .cse0 .cse1 .cse2 (<= main_~in~0 2) .cse3 .cse4 (<= 2 main_~buf~0)) (and .cse0 (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) .cse3 (<= 3 main_~buf~0) .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse2 (<= main_~in~0 1) .cse3 (<= 1 main_~buf~0) (< main_~buf~0 (+ main_~buflim~0 1)))))) [2018-11-18 15:07:52,611 INFO L421 ceAbstractionStarter]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse5 (+ main_~buflim~0 2))) (let ((.cse4 (<= (+ main_~buf~0 2) main_~bufferlen~0)) (.cse0 (<= (+ main_~bufferlen~0 1) main_~inlen~0)) (.cse1 (<= 1 main_~in~0)) (.cse2 (<= .cse5 main_~bufferlen~0)) (.cse3 (<= main_~bufferlen~0 .cse5))) (or (and .cse0 .cse1 .cse2 (<= main_~in~0 2) .cse3 .cse4 (<= 2 main_~buf~0)) (and .cse0 (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) .cse3 (<= 3 main_~buf~0) .cse1 .cse2 .cse4) (and .cse0 .cse1 .cse2 (<= main_~in~0 1) .cse3 (<= 1 main_~buf~0) (< main_~buf~0 (+ main_~buflim~0 1)))))) [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L428 ceAbstractionStarter]: At program point L41(lines 11 42) the Hoare annotation is: true [2018-11-18 15:07:52,612 INFO L421 ceAbstractionStarter]: At program point L33(lines 23 34) the Hoare annotation is: (let ((.cse5 (+ main_~buflim~0 2))) (let ((.cse4 (<= (+ main_~buf~0 2) main_~bufferlen~0)) (.cse0 (<= (+ main_~bufferlen~0 1) main_~inlen~0)) (.cse1 (<= 1 main_~in~0)) (.cse2 (<= .cse5 main_~bufferlen~0)) (.cse3 (<= main_~bufferlen~0 .cse5))) (or (and .cse0 .cse1 .cse2 (<= main_~in~0 2) .cse3 .cse4 (<= 2 main_~buf~0)) (and .cse0 (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) .cse3 (<= 3 main_~buf~0) .cse1 .cse2 .cse4) (and .cse0 .cse3 (<= 0 main_~in~0) .cse2 (<= main_~in~0 0) (= main_~buf~0 0) (<= 2 main_~bufferlen~0)) (and .cse0 .cse1 .cse2 (<= main_~in~0 1) .cse3 (<= 1 main_~buf~0) (< main_~buf~0 (+ main_~buflim~0 1)))))) [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 11 42) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 42) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (and (<= 0 main_~in~0) (<= 0 main_~buf~0)))) (or (and (<= (+ main_~buf~0 1) main_~bufferlen~0) (and (<= 3 main_~inlen~0) .cse0) (< 1 main_~bufferlen~0)) (and (<= main_~buf~0 1) .cse0 (<= 2 main_~bufferlen~0)))) [2018-11-18 15:07:52,612 INFO L421 ceAbstractionStarter]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (and (<= 0 main_~in~0) (<= 0 main_~buf~0)))) (or (and (<= (+ main_~buf~0 1) main_~bufferlen~0) (and (<= 3 main_~inlen~0) .cse0) (< 1 main_~bufferlen~0)) (and (<= main_~buf~0 1) .cse0 (<= 2 main_~bufferlen~0)))) [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 42) the Hoare annotation is: true [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L18(lines 11 42) no Hoare annotation was computed. [2018-11-18 15:07:52,612 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-18 15:07:52,613 INFO L421 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: (let ((.cse2 (<= 1 main_~in~0)) (.cse0 (<= 0 main_~buf~0)) (.cse3 (<= (+ main_~buf~0 2) main_~bufferlen~0))) (or (and (<= main_~buf~0 0) (<= 0 main_~in~0) .cse0 (<= 2 main_~bufferlen~0)) (let ((.cse1 (+ main_~buflim~0 2))) (and (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= (+ main_~in~0 main_~bufferlen~0 1) (+ main_~buf~0 main_~inlen~0)) (<= main_~bufferlen~0 .cse1) .cse2 .cse0 (<= .cse1 main_~bufferlen~0) .cse3)) (and (<= main_~buf~0 2) .cse2 .cse0 (<= 3 main_~inlen~0) .cse3))) [2018-11-18 15:07:52,613 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 15:07:52,613 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 15:07:52,613 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 15:07:52,613 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 15:07:52,613 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 15:07:52,613 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 15:07:52,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:07:52 BoogieIcfgContainer [2018-11-18 15:07:52,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:07:52,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:07:52,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:07:52,624 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:07:52,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:07:47" (3/4) ... [2018-11-18 15:07:52,627 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:07:52,631 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:07:52,631 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:07:52,631 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 15:07:52,633 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-18 15:07:52,634 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 15:07:52,634 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:07:52,670 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1da8432e-5a3c-4597-86eb-fecaba846c20/bin-2019/uautomizer/witness.graphml [2018-11-18 15:07:52,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:07:52,671 INFO L168 Benchmark]: Toolchain (without parser) took 5378.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 959.1 MB in the beginning and 887.7 MB in the end (delta: 71.4 MB). Peak memory consumption was 254.9 MB. Max. memory is 11.5 GB. [2018-11-18 15:07:52,672 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:07:52,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.49 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. [2018-11-18 15:07:52,672 INFO L168 Benchmark]: Boogie Preprocessor took 21.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:07:52,673 INFO L168 Benchmark]: RCFGBuilder took 198.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-11-18 15:07:52,673 INFO L168 Benchmark]: TraceAbstraction took 4940.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.1 GB in the beginning and 892.9 MB in the end (delta: 225.6 MB). Peak memory consumption was 273.3 MB. Max. memory is 11.5 GB. [2018-11-18 15:07:52,673 INFO L168 Benchmark]: Witness Printer took 46.15 ms. Allocated memory is still 1.2 GB. Free memory was 892.9 MB in the beginning and 887.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2018-11-18 15:07:52,675 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.49 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 21.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4940.39 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.1 GB in the beginning and 892.9 MB in the end (delta: 225.6 MB). Peak memory consumption was 273.3 MB. Max. memory is 11.5 GB. * Witness Printer took 46.15 ms. Allocated memory is still 1.2 GB. Free memory was 892.9 MB in the beginning and 887.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((bufferlen + 1 <= inlen && 1 <= in) && buflim + 2 <= bufferlen) && in <= 2) && bufferlen <= buflim + 2) && buf + 2 <= bufferlen) && 2 <= buf) || ((((((bufferlen + 1 <= inlen && in + bufferlen + 1 <= buf + inlen) && bufferlen <= buflim + 2) && 3 <= buf) && 1 <= in) && buflim + 2 <= bufferlen) && buf + 2 <= bufferlen)) || ((((((bufferlen + 1 <= inlen && bufferlen <= buflim + 2) && 0 <= in) && buflim + 2 <= bufferlen) && in <= 0) && buf == 0) && 2 <= bufferlen)) || ((((((bufferlen + 1 <= inlen && 1 <= in) && buflim + 2 <= bufferlen) && in <= 1) && bufferlen <= buflim + 2) && 1 <= buf) && buf < buflim + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 10 OverallIterations, 16 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 309 SDtfs, 461 SDslu, 1933 SDs, 0 SdLazy, 2421 SolverSat, 485 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 403 SyntacticMatches, 14 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 58 PreInvPairs, 100 NumberOfFragments, 768 HoareAnnotationTreeSize, 58 FomulaSimplifications, 839 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 902 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 872 ConstructedInterpolants, 0 QuantifiedInterpolants, 263289 SizeOfPredicates, 27 NumberOfNonLiveVariables, 854 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 1731/2032 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...