./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c --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_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 45b185c6c694406b0734db5727dff1b8fd93ebcf ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:23:09,942 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:23:09,944 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:23:09,950 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:23:09,950 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:23:09,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:23:09,951 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:23:09,952 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:23:09,953 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:23:09,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:23:09,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:23:09,955 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:23:09,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:23:09,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:23:09,957 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:23:09,957 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:23:09,957 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:23:09,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:23:09,960 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:23:09,960 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:23:09,961 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:23:09,962 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:23:09,963 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:23:09,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:23:09,964 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:23:09,964 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:23:09,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:23:09,965 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:23:09,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:23:09,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:23:09,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:23:09,966 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:23:09,966 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:23:09,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:23:09,967 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:23:09,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:23:09,967 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 16:23:09,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:23:09,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:23:09,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:23:09,975 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 16:23:09,975 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:23:09,975 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:23:09,975 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:23:09,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:23:09,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:23:09,977 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:23:09,977 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:23:09,977 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:23:09,977 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:23:09,977 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:23:09,977 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:23:09,977 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:23:09,978 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:23:09,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:23:09,978 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:23:09,978 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:23:09,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:23:09,978 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:23:09,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:23:09,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:23:09,979 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_6082c934-dd01-4bbd-bb17-7a56046e4279/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 -> 45b185c6c694406b0734db5727dff1b8fd93ebcf [2018-11-18 16:23:10,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:23:10,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:23:10,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:23:10,018 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:23:10,018 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:23:10,018 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 16:23:10,062 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/data/85aca0ab1/5b505b85fa2040469b7482413fc69ef4/FLAGaa5b55d71 [2018-11-18 16:23:10,470 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:23:10,471 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 16:23:10,475 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/data/85aca0ab1/5b505b85fa2040469b7482413fc69ef4/FLAGaa5b55d71 [2018-11-18 16:23:10,487 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/data/85aca0ab1/5b505b85fa2040469b7482413fc69ef4 [2018-11-18 16:23:10,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:23:10,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:23:10,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:23:10,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:23:10,495 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:23:10,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c31600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10, skipping insertion in model container [2018-11-18 16:23:10,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:23:10,529 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:23:10,664 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:23:10,667 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:23:10,690 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:23:10,698 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:23:10,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10 WrapperNode [2018-11-18 16:23:10,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:23:10,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:23:10,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:23:10,699 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:23:10,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... [2018-11-18 16:23:10,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:23:10,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:23:10,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:23:10,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:23:10,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:23:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:23:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:23:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2018-11-18 16:23:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2018-11-18 16:23:10,801 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2018-11-18 16:23:10,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2018-11-18 16:23:10,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:23:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:23:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:23:11,050 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:23:11,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:23:11 BoogieIcfgContainer [2018-11-18 16:23:11,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:23:11,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:23:11,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:23:11,053 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:23:11,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:23:10" (1/3) ... [2018-11-18 16:23:11,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2e13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:23:11, skipping insertion in model container [2018-11-18 16:23:11,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:23:10" (2/3) ... [2018-11-18 16:23:11,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2e13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:23:11, skipping insertion in model container [2018-11-18 16:23:11,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:23:11" (3/3) ... [2018-11-18 16:23:11,056 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 16:23:11,061 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:23:11,066 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:23:11,074 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:23:11,095 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:23:11,095 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:23:11,095 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:23:11,096 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:23:11,096 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:23:11,096 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:23:11,096 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:23:11,096 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:23:11,096 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:23:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-11-18 16:23:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 16:23:11,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:11,115 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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 16:23:11,116 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:11,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1252609817, now seen corresponding path program 1 times [2018-11-18 16:23:11,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:11,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:11,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:11,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-18 16:23:11,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:23:11,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:23:11,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:23:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:23:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:23:11,271 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2018-11-18 16:23:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:11,326 INFO L93 Difference]: Finished difference Result 122 states and 178 transitions. [2018-11-18 16:23:11,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:23:11,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-18 16:23:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:11,343 INFO L225 Difference]: With dead ends: 122 [2018-11-18 16:23:11,344 INFO L226 Difference]: Without dead ends: 54 [2018-11-18 16:23:11,346 INFO L604 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 [2018-11-18 16:23:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-18 16:23:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-11-18 16:23:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-18 16:23:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2018-11-18 16:23:11,374 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 48 [2018-11-18 16:23:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:11,376 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2018-11-18 16:23:11,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:23:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2018-11-18 16:23:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 16:23:11,379 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:11,379 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1] [2018-11-18 16:23:11,379 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:11,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:11,379 INFO L82 PathProgramCache]: Analyzing trace with hash -955411957, now seen corresponding path program 1 times [2018-11-18 16:23:11,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:11,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:11,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:11,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:11,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:11,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:11,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:11,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:11,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:11,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2018-11-18 16:23:11,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 16:23:11,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 16:23:11,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:23:11,604 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand 9 states. [2018-11-18 16:23:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:11,786 INFO L93 Difference]: Finished difference Result 157 states and 220 transitions. [2018-11-18 16:23:11,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:23:11,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-11-18 16:23:11,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:11,790 INFO L225 Difference]: With dead ends: 157 [2018-11-18 16:23:11,790 INFO L226 Difference]: Without dead ends: 111 [2018-11-18 16:23:11,791 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-18 16:23:11,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-18 16:23:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2018-11-18 16:23:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-18 16:23:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2018-11-18 16:23:11,806 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 50 [2018-11-18 16:23:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:11,806 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2018-11-18 16:23:11,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 16:23:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2018-11-18 16:23:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 16:23:11,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:11,808 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:11,809 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:11,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1292080167, now seen corresponding path program 1 times [2018-11-18 16:23:11,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:11,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:11,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:11,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:11,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:11,856 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:11,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:11,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:23:11,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:23:11,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-11-18 16:23:11,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:23:11,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:23:11,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:23:11,911 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand 4 states. [2018-11-18 16:23:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:11,963 INFO L93 Difference]: Finished difference Result 169 states and 237 transitions. [2018-11-18 16:23:11,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:23:11,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-18 16:23:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:11,965 INFO L225 Difference]: With dead ends: 169 [2018-11-18 16:23:11,965 INFO L226 Difference]: Without dead ends: 103 [2018-11-18 16:23:11,966 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:23:11,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-18 16:23:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 95. [2018-11-18 16:23:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-18 16:23:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 131 transitions. [2018-11-18 16:23:11,979 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 131 transitions. Word has length 56 [2018-11-18 16:23:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:11,979 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 131 transitions. [2018-11-18 16:23:11,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:23:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 131 transitions. [2018-11-18 16:23:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 16:23:11,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:11,982 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:11,982 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:11,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:11,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1744296243, now seen corresponding path program 1 times [2018-11-18 16:23:11,982 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:11,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:11,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:11,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:12,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:12,030 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:12,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:12,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:23:12,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:23:12,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-11-18 16:23:12,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:23:12,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:23:12,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:23:12,082 INFO L87 Difference]: Start difference. First operand 95 states and 131 transitions. Second operand 4 states. [2018-11-18 16:23:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:12,151 INFO L93 Difference]: Finished difference Result 186 states and 264 transitions. [2018-11-18 16:23:12,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:23:12,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-18 16:23:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:12,153 INFO L225 Difference]: With dead ends: 186 [2018-11-18 16:23:12,153 INFO L226 Difference]: Without dead ends: 114 [2018-11-18 16:23:12,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:23:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-18 16:23:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2018-11-18 16:23:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-11-18 16:23:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 142 transitions. [2018-11-18 16:23:12,166 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 142 transitions. Word has length 57 [2018-11-18 16:23:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:12,166 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 142 transitions. [2018-11-18 16:23:12,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:23:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 142 transitions. [2018-11-18 16:23:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 16:23:12,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:12,168 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:12,168 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:12,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1105818479, now seen corresponding path program 1 times [2018-11-18 16:23:12,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:12,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:12,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:12,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:12,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:12,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:12,248 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:12,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:12,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 16:23:12,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:12,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 13 [2018-11-18 16:23:12,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 16:23:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 16:23:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-11-18 16:23:12,397 INFO L87 Difference]: Start difference. First operand 103 states and 142 transitions. Second operand 13 states. [2018-11-18 16:23:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:12,770 INFO L93 Difference]: Finished difference Result 200 states and 277 transitions. [2018-11-18 16:23:12,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 16:23:12,771 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2018-11-18 16:23:12,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:12,772 INFO L225 Difference]: With dead ends: 200 [2018-11-18 16:23:12,772 INFO L226 Difference]: Without dead ends: 107 [2018-11-18 16:23:12,773 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2018-11-18 16:23:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-18 16:23:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 81. [2018-11-18 16:23:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-18 16:23:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2018-11-18 16:23:12,783 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 57 [2018-11-18 16:23:12,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:12,784 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2018-11-18 16:23:12,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 16:23:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2018-11-18 16:23:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 16:23:12,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:12,785 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:12,785 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:12,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:12,785 INFO L82 PathProgramCache]: Analyzing trace with hash 15098307, now seen corresponding path program 1 times [2018-11-18 16:23:12,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:12,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:12,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:12,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:12,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:12,836 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:12,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:12,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:12,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:12,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 10 [2018-11-18 16:23:12,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 16:23:12,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 16:23:12,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:23:12,950 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand 10 states. [2018-11-18 16:23:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:13,195 INFO L93 Difference]: Finished difference Result 183 states and 243 transitions. [2018-11-18 16:23:13,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 16:23:13,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2018-11-18 16:23:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:13,196 INFO L225 Difference]: With dead ends: 183 [2018-11-18 16:23:13,196 INFO L226 Difference]: Without dead ends: 112 [2018-11-18 16:23:13,196 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-18 16:23:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-18 16:23:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 89. [2018-11-18 16:23:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-18 16:23:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 116 transitions. [2018-11-18 16:23:13,206 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 116 transitions. Word has length 58 [2018-11-18 16:23:13,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:13,207 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 116 transitions. [2018-11-18 16:23:13,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 16:23:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 116 transitions. [2018-11-18 16:23:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 16:23:13,207 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:13,208 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:13,208 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:13,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1665507476, now seen corresponding path program 1 times [2018-11-18 16:23:13,208 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:13,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:13,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:13,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:13,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:13,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:23:13,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:13,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 16:23:13,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 16:23:13,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 16:23:13,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:23:13,310 INFO L87 Difference]: Start difference. First operand 89 states and 116 transitions. Second operand 5 states. [2018-11-18 16:23:13,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:13,403 INFO L93 Difference]: Finished difference Result 178 states and 233 transitions. [2018-11-18 16:23:13,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:23:13,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2018-11-18 16:23:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:13,406 INFO L225 Difference]: With dead ends: 178 [2018-11-18 16:23:13,406 INFO L226 Difference]: Without dead ends: 99 [2018-11-18 16:23:13,406 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:23:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-18 16:23:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2018-11-18 16:23:13,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-18 16:23:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2018-11-18 16:23:13,420 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 60 [2018-11-18 16:23:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:13,420 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2018-11-18 16:23:13,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 16:23:13,420 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2018-11-18 16:23:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-18 16:23:13,421 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:13,421 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:13,421 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:13,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1365570678, now seen corresponding path program 1 times [2018-11-18 16:23:13,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:13,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:13,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:13,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:13,492 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:13,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 16:23:13,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 16:23:13,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-18 16:23:13,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 16:23:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 16:23:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:23:13,569 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 10 states. [2018-11-18 16:23:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:13,724 INFO L93 Difference]: Finished difference Result 204 states and 268 transitions. [2018-11-18 16:23:13,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 16:23:13,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-11-18 16:23:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:13,725 INFO L225 Difference]: With dead ends: 204 [2018-11-18 16:23:13,725 INFO L226 Difference]: Without dead ends: 103 [2018-11-18 16:23:13,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-11-18 16:23:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-18 16:23:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2018-11-18 16:23:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-18 16:23:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2018-11-18 16:23:13,733 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 62 [2018-11-18 16:23:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:13,734 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2018-11-18 16:23:13,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 16:23:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2018-11-18 16:23:13,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-18 16:23:13,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:13,735 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:13,735 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:13,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:13,735 INFO L82 PathProgramCache]: Analyzing trace with hash -13236933, now seen corresponding path program 1 times [2018-11-18 16:23:13,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:13,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:13,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:13,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:13,779 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/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 16:23:13,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:23:13,834 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:13,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 16:23:13,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:23:13,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:23:13,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:23:13,835 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 6 states. [2018-11-18 16:23:13,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:13,899 INFO L93 Difference]: Finished difference Result 161 states and 202 transitions. [2018-11-18 16:23:13,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:23:13,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2018-11-18 16:23:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:13,905 INFO L225 Difference]: With dead ends: 161 [2018-11-18 16:23:13,905 INFO L226 Difference]: Without dead ends: 94 [2018-11-18 16:23:13,905 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:23:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-18 16:23:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2018-11-18 16:23:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-11-18 16:23:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2018-11-18 16:23:13,916 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 70 [2018-11-18 16:23:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:13,916 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2018-11-18 16:23:13,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:23:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2018-11-18 16:23:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 16:23:13,917 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:13,917 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:13,918 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:13,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:13,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1194924903, now seen corresponding path program 1 times [2018-11-18 16:23:13,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:13,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:13,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:13,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:13,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:13,989 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:14,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:14,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-18 16:23:14,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:14,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 15 [2018-11-18 16:23:14,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 16:23:14,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 16:23:14,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-11-18 16:23:14,141 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand 15 states. [2018-11-18 16:23:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:14,634 INFO L93 Difference]: Finished difference Result 203 states and 263 transitions. [2018-11-18 16:23:14,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-18 16:23:14,635 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2018-11-18 16:23:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:14,636 INFO L225 Difference]: With dead ends: 203 [2018-11-18 16:23:14,636 INFO L226 Difference]: Without dead ends: 133 [2018-11-18 16:23:14,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2018-11-18 16:23:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-18 16:23:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2018-11-18 16:23:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-18 16:23:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2018-11-18 16:23:14,646 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 72 [2018-11-18 16:23:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:14,646 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2018-11-18 16:23:14,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 16:23:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2018-11-18 16:23:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-18 16:23:14,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:14,647 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 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 16:23:14,647 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:14,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash -794669882, now seen corresponding path program 1 times [2018-11-18 16:23:14,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:14,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:14,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:14,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:14,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:14,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:14,679 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:14,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:14,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:23:14,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:14,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 16:23:14,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:23:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:23:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:23:14,733 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand 7 states. [2018-11-18 16:23:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:14,795 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2018-11-18 16:23:14,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 16:23:14,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2018-11-18 16:23:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:14,797 INFO L225 Difference]: With dead ends: 210 [2018-11-18 16:23:14,797 INFO L226 Difference]: Without dead ends: 122 [2018-11-18 16:23:14,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:23:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-11-18 16:23:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2018-11-18 16:23:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-11-18 16:23:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2018-11-18 16:23:14,807 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 74 [2018-11-18 16:23:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:14,807 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2018-11-18 16:23:14,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:23:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2018-11-18 16:23:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-18 16:23:14,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:14,808 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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 16:23:14,808 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:14,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:14,809 INFO L82 PathProgramCache]: Analyzing trace with hash -224227868, now seen corresponding path program 1 times [2018-11-18 16:23:14,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:14,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:14,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:14,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:14,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 16:23:14,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:14,880 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:14,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:14,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-18 16:23:15,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:15,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2018-11-18 16:23:15,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 16:23:15,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 16:23:15,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-11-18 16:23:15,036 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand 16 states. [2018-11-18 16:23:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:15,683 INFO L93 Difference]: Finished difference Result 226 states and 295 transitions. [2018-11-18 16:23:15,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-18 16:23:15,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2018-11-18 16:23:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:15,685 INFO L225 Difference]: With dead ends: 226 [2018-11-18 16:23:15,685 INFO L226 Difference]: Without dead ends: 116 [2018-11-18 16:23:15,686 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=1223, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 16:23:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-18 16:23:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2018-11-18 16:23:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-18 16:23:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2018-11-18 16:23:15,693 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 76 [2018-11-18 16:23:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:15,693 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2018-11-18 16:23:15,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 16:23:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2018-11-18 16:23:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-18 16:23:15,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:15,694 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:15,695 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:15,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash 577779343, now seen corresponding path program 2 times [2018-11-18 16:23:15,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:15,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:15,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:15,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:15,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-18 16:23:15,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:15,748 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:15,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:23:15,778 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:23:15,778 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:23:15,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 26 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-18 16:23:15,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:15,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 16:23:15,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:23:15,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:23:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:23:15,801 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand 8 states. [2018-11-18 16:23:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:15,857 INFO L93 Difference]: Finished difference Result 176 states and 214 transitions. [2018-11-18 16:23:15,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 16:23:15,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2018-11-18 16:23:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:15,858 INFO L225 Difference]: With dead ends: 176 [2018-11-18 16:23:15,858 INFO L226 Difference]: Without dead ends: 101 [2018-11-18 16:23:15,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:23:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-18 16:23:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2018-11-18 16:23:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-18 16:23:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2018-11-18 16:23:15,867 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 103 transitions. Word has length 83 [2018-11-18 16:23:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:15,867 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 103 transitions. [2018-11-18 16:23:15,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:23:15,868 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 103 transitions. [2018-11-18 16:23:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-18 16:23:15,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:15,868 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:15,869 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:15,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash 235179633, now seen corresponding path program 2 times [2018-11-18 16:23:15,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:15,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:15,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:15,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:23:15,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-18 16:23:15,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:15,953 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:15,961 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:23:15,982 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:23:15,982 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:23:15,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-11-18 16:23:16,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:16,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 19 [2018-11-18 16:23:16,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 16:23:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 16:23:16,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2018-11-18 16:23:16,154 INFO L87 Difference]: Start difference. First operand 85 states and 103 transitions. Second operand 19 states. [2018-11-18 16:23:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:16,657 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2018-11-18 16:23:16,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 16:23:16,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2018-11-18 16:23:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:16,658 INFO L225 Difference]: With dead ends: 210 [2018-11-18 16:23:16,658 INFO L226 Difference]: Without dead ends: 135 [2018-11-18 16:23:16,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2018-11-18 16:23:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-11-18 16:23:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 94. [2018-11-18 16:23:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-18 16:23:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2018-11-18 16:23:16,670 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 85 [2018-11-18 16:23:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:16,670 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2018-11-18 16:23:16,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 16:23:16,670 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2018-11-18 16:23:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-18 16:23:16,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:16,671 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:16,671 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:16,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:16,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1444612444, now seen corresponding path program 1 times [2018-11-18 16:23:16,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:16,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:16,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:16,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:23:16,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-18 16:23:16,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:23:16,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 16:23:16,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 16:23:16,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 16:23:16,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 16:23:16,696 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand 4 states. [2018-11-18 16:23:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:16,714 INFO L93 Difference]: Finished difference Result 106 states and 129 transitions. [2018-11-18 16:23:16,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:23:16,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-11-18 16:23:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:16,715 INFO L225 Difference]: With dead ends: 106 [2018-11-18 16:23:16,715 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 16:23:16,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 16:23:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 16:23:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-11-18 16:23:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-18 16:23:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2018-11-18 16:23:16,724 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 87 [2018-11-18 16:23:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:16,726 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2018-11-18 16:23:16,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 16:23:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2018-11-18 16:23:16,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-18 16:23:16,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:16,727 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:16,727 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:16,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2110646378, now seen corresponding path program 1 times [2018-11-18 16:23:16,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:16,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:16,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:16,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:16,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 4 proven. 65 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-18 16:23:16,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:16,793 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:16,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:16,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 16:23:16,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:16,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 16:23:16,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 16:23:16,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 16:23:16,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:23:16,840 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 9 states. [2018-11-18 16:23:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:16,899 INFO L93 Difference]: Finished difference Result 194 states and 233 transitions. [2018-11-18 16:23:16,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:23:16,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2018-11-18 16:23:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:16,900 INFO L225 Difference]: With dead ends: 194 [2018-11-18 16:23:16,900 INFO L226 Difference]: Without dead ends: 112 [2018-11-18 16:23:16,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:23:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-18 16:23:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2018-11-18 16:23:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-18 16:23:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2018-11-18 16:23:16,908 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 87 [2018-11-18 16:23:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:16,908 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2018-11-18 16:23:16,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 16:23:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2018-11-18 16:23:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-18 16:23:16,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:16,909 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:16,909 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:16,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash -586172788, now seen corresponding path program 1 times [2018-11-18 16:23:16,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:16,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:16,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:16,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:16,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-18 16:23:16,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:16,984 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:16,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:17,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-18 16:23:17,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:17,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2018-11-18 16:23:17,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 16:23:17,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 16:23:17,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2018-11-18 16:23:17,177 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 18 states. [2018-11-18 16:23:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:17,564 INFO L93 Difference]: Finished difference Result 208 states and 251 transitions. [2018-11-18 16:23:17,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 16:23:17,565 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2018-11-18 16:23:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:17,565 INFO L225 Difference]: With dead ends: 208 [2018-11-18 16:23:17,565 INFO L226 Difference]: Without dead ends: 116 [2018-11-18 16:23:17,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2018-11-18 16:23:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-18 16:23:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2018-11-18 16:23:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-18 16:23:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2018-11-18 16:23:17,577 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 89 [2018-11-18 16:23:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:17,577 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2018-11-18 16:23:17,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 16:23:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2018-11-18 16:23:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-18 16:23:17,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:17,578 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:17,578 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:17,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash 103062787, now seen corresponding path program 1 times [2018-11-18 16:23:17,578 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:17,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:17,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:17,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:17,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 4 proven. 88 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-18 16:23:17,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:17,638 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:17,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:17,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 16:23:17,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:17,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 16:23:17,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 16:23:17,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 16:23:17,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:23:17,702 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand 10 states. [2018-11-18 16:23:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:17,760 INFO L93 Difference]: Finished difference Result 206 states and 246 transitions. [2018-11-18 16:23:17,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 16:23:17,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2018-11-18 16:23:17,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:17,762 INFO L225 Difference]: With dead ends: 206 [2018-11-18 16:23:17,762 INFO L226 Difference]: Without dead ends: 120 [2018-11-18 16:23:17,763 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:23:17,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-18 16:23:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 96. [2018-11-18 16:23:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-18 16:23:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2018-11-18 16:23:17,774 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 91 [2018-11-18 16:23:17,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:17,775 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2018-11-18 16:23:17,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 16:23:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2018-11-18 16:23:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-18 16:23:17,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:23:17,776 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:23:17,776 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:23:17,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:23:17,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1125203611, now seen corresponding path program 1 times [2018-11-18 16:23:17,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:23:17,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:23:17,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:17,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:17,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:23:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 95 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-18 16:23:17,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:23:17,932 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:23:17,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:23:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:23:17,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:23:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-18 16:23:18,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:23:18,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-18 16:23:18,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 16:23:18,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 16:23:18,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-11-18 16:23:18,166 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand 19 states. [2018-11-18 16:23:18,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:23:18,574 INFO L93 Difference]: Finished difference Result 197 states and 237 transitions. [2018-11-18 16:23:18,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 16:23:18,574 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 93 [2018-11-18 16:23:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:23:18,574 INFO L225 Difference]: With dead ends: 197 [2018-11-18 16:23:18,574 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:23:18,575 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2018-11-18 16:23:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:23:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:23:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:23:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:23:18,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2018-11-18 16:23:18,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:23:18,575 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:23:18,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 16:23:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:23:18,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:23:18,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:23:19,032 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 66 [2018-11-18 16:23:19,702 WARN L180 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 30 [2018-11-18 16:23:19,855 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 27 42) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 24) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point L48(lines 47 62) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L421 ceAbstractionStarter]: At program point L69(lines 18 71) the Hoare annotation is: (let ((.cse0 (<= |base2flt_#in~e| base2flt_~e)) (.cse1 (<= base2flt_~e |base2flt_#in~e|))) (or (and (= 0 base2flt_~__retres4~0) .cse0 (= base2flt_~m |base2flt_#in~m|) .cse1) (and .cse0 (<= (+ |base2flt_#in~e| 128) 0)) (and (<= 127 |base2flt_#in~e|) .cse1) (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296)))))) [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point L28(lines 27 42) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point L49(lines 47 62) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L425 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-11-18 16:23:19,856 INFO L421 ceAbstractionStarter]: At program point L37-1(lines 27 42) the Hoare annotation is: (and (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296)))) (<= base2flt_~e |base2flt_#in~e|)) [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 65) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L428 ceAbstractionStarter]: At program point base2fltENTRY(lines 14 72) the Hoare annotation is: true [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point base2fltFINAL(lines 14 72) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L421 ceAbstractionStarter]: At program point L63(lines 25 65) the Hoare annotation is: (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296)))) [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point base2fltEXIT(lines 14 72) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 62) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 62) the Hoare annotation is: (let ((.cse2 (div base2flt_~m 4294967296))) (let ((.cse0 (+ .cse2 1))) (let ((.cse1 (<= .cse0 0))) (and (<= |base2flt_#in~e| base2flt_~e) (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296)))) (or (<= |base2flt_#in~m| base2flt_~m) (< 0 .cse0)) (or .cse1 (<= (+ (* 4294967296 .cse2) 16777216) |base2flt_#in~m|)) (or (<= base2flt_~m |base2flt_#in~m|) .cse1))))) [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point mulfltEXIT(lines 137 209) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point L184(lines 184 201) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point L184-2(lines 184 201) no Hoare annotation was computed. [2018-11-18 16:23:19,857 INFO L425 ceAbstractionStarter]: For program point L193(lines 193 198) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point mulfltFINAL(lines 137 209) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L428 ceAbstractionStarter]: At program point mulfltENTRY(lines 137 209) the Hoare annotation is: true [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point L185(lines 185 190) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point L148(lines 148 154) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point L148-2(lines 147 208) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point L175(lines 175 180) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L421 ceAbstractionStarter]: At program point L206(lines 147 208) the Hoare annotation is: (let ((.cse0 (= 0 mulflt_~__retres10~1))) (and (let ((.cse2 (mod |mulflt_#in~a| 4294967296))) (or .cse0 (and (exists ((mulflt_~b Int)) (let ((.cse1 (mod mulflt_~b 4294967296))) (and (<= .cse1 (mod |mulflt_#in~a| 4294967296)) (not (= .cse1 0))))) (<= (mod mulflt_~b 4294967296) .cse2) (= mulflt_~a |mulflt_#in~a|)) (and (= mulflt_~b |mulflt_#in~a|) (not (= .cse2 0))))) (or (exists ((v_mulflt_~a_6 Int)) (< (mod v_mulflt_~a_6 4294967296) (mod |mulflt_#in~b| 4294967296))) (and (= mulflt_~b |mulflt_#in~b|) .cse0)))) [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point L169(lines 169 174) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:23:19,858 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:23:19,859 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L250(lines 250 254) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 210 266) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L250-2(lines 250 254) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L246(lines 246 262) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L246-1(lines 246 262) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L244(line 244) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 210 266) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L236(lines 236 240) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L236-2(lines 236 240) no Hoare annotation was computed. [2018-11-18 16:23:19,859 INFO L421 ceAbstractionStarter]: At program point L230(line 230) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-18 16:23:19,859 INFO L425 ceAbstractionStarter]: For program point L230-1(line 230) no Hoare annotation was computed. [2018-11-18 16:23:19,860 INFO L428 ceAbstractionStarter]: At program point L228(line 228) the Hoare annotation is: true [2018-11-18 16:23:19,860 INFO L425 ceAbstractionStarter]: For program point L228-1(line 228) no Hoare annotation was computed. [2018-11-18 16:23:19,860 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 210 266) the Hoare annotation is: true [2018-11-18 16:23:19,860 INFO L425 ceAbstractionStarter]: For program point L247(lines 247 256) no Hoare annotation was computed. [2018-11-18 16:23:19,860 INFO L421 ceAbstractionStarter]: At program point L247-2(lines 247 256) the Hoare annotation is: (and (= main_~tmp___1~0 0) (= main_~tmp___0~0 0)) [2018-11-18 16:23:19,860 INFO L425 ceAbstractionStarter]: For program point L233(lines 233 242) no Hoare annotation was computed. [2018-11-18 16:23:19,860 INFO L421 ceAbstractionStarter]: At program point L231(line 231) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-18 16:23:19,860 INFO L421 ceAbstractionStarter]: At program point L233-2(lines 233 242) the Hoare annotation is: (let ((.cse0 (= 0 main_~zero~0))) (or (and (= main_~b~0 0) .cse0) (and (<= (mod main_~a~0 4294967296) 0) .cse0) (<= (+ main_~sa~0 1) 0) (and (<= 1 main_~tmp~2) (<= 1 main_~sa~0) .cse0))) [2018-11-18 16:23:19,860 INFO L425 ceAbstractionStarter]: For program point L231-1(line 231) no Hoare annotation was computed. [2018-11-18 16:23:19,860 INFO L421 ceAbstractionStarter]: At program point L229(line 229) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-18 16:23:19,860 INFO L425 ceAbstractionStarter]: For program point L229-1(line 229) no Hoare annotation was computed. [2018-11-18 16:23:19,860 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L128(line 128) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point addfltENTRY(lines 73 136) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point addfltFINAL(lines 73 136) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L116(lines 116 121) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L108(lines 108 113) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L104(line 104) no Hoare annotation was computed. [2018-11-18 16:23:19,861 INFO L425 ceAbstractionStarter]: For program point L104-1(line 104) no Hoare annotation was computed. [2018-11-18 16:23:19,862 INFO L425 ceAbstractionStarter]: For program point L133(lines 83 135) no Hoare annotation was computed. [2018-11-18 16:23:19,862 INFO L425 ceAbstractionStarter]: For program point addfltEXIT(lines 73 136) no Hoare annotation was computed. [2018-11-18 16:23:19,862 INFO L425 ceAbstractionStarter]: For program point L84(lines 84 90) no Hoare annotation was computed. [2018-11-18 16:23:19,862 INFO L425 ceAbstractionStarter]: For program point L115(lines 115 126) no Hoare annotation was computed. [2018-11-18 16:23:19,862 INFO L425 ceAbstractionStarter]: For program point L84-2(lines 83 135) no Hoare annotation was computed. [2018-11-18 16:23:19,862 INFO L425 ceAbstractionStarter]: For program point L115-2(lines 115 126) no Hoare annotation was computed. [2018-11-18 16:23:19,866 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,867 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,867 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,873 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,875 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,875 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,875 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,876 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,876 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,876 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,877 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,877 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,877 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,878 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,878 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,878 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,879 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,879 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,880 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-18 16:23:19,880 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,880 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,881 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-18 16:23:19,881 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,881 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,881 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,882 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,882 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,882 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:23:19 BoogieIcfgContainer [2018-11-18 16:23:19,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:23:19,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:23:19,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:23:19,884 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:23:19,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:23:11" (3/4) ... [2018-11-18 16:23:19,888 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:23:19,893 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:23:19,893 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2018-11-18 16:23:19,894 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure mulflt [2018-11-18 16:23:19,894 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:23:19,894 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 16:23:19,894 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure addflt [2018-11-18 16:23:19,898 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-11-18 16:23:19,899 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-18 16:23:19,899 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:23:19,923 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0 == __retres4 && \old(e) <= e) && m == \old(m)) && e <= \old(e)) || (\old(e) <= e && \old(e) + 128 <= 0)) || (127 <= \old(e) && e <= \old(e))) || (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) [2018-11-18 16:23:19,923 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) && e <= \old(e) [2018-11-18 16:23:19,923 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e && (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296)) && (\old(m) <= m || 0 < m / 4294967296 + 1)) && (m / 4294967296 + 1 <= 0 || 4294967296 * (m / 4294967296) + 16777216 <= \old(m))) && (m <= \old(m) || m / 4294967296 + 1 <= 0) [2018-11-18 16:23:19,923 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) [2018-11-18 16:23:19,924 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 == __retres10 || (((\exists mulflt_~b : int :: mulflt_~b % 4294967296 <= \old(a) % 4294967296 && !(mulflt_~b % 4294967296 == 0)) && b % 4294967296 <= \old(a) % 4294967296) && a == \old(a))) || (b == \old(a) && !(\old(a) % 4294967296 == 0))) && ((\exists v_mulflt_~a_6 : int :: v_mulflt_~a_6 % 4294967296 < \old(b) % 4294967296) || (b == \old(b) && 0 == __retres10)) [2018-11-18 16:23:19,953 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6082c934-dd01-4bbd-bb17-7a56046e4279/bin-2019/uautomizer/witness.graphml [2018-11-18 16:23:19,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:23:19,954 INFO L168 Benchmark]: Toolchain (without parser) took 9463.21 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 255.9 MB). Free memory was 959.2 MB in the beginning and 889.8 MB in the end (delta: 69.4 MB). Peak memory consumption was 325.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:23:19,954 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:23:19,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.29 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:23:19,954 INFO L168 Benchmark]: Boogie Preprocessor took 65.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:23:19,955 INFO L168 Benchmark]: RCFGBuilder took 285.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:23:19,955 INFO L168 Benchmark]: TraceAbstraction took 8832.57 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 115.9 MB). Free memory was 1.1 GB in the beginning and 889.8 MB in the end (delta: 217.2 MB). Peak memory consumption was 333.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:23:19,955 INFO L168 Benchmark]: Witness Printer took 69.18 ms. Allocated memory is still 1.3 GB. Free memory is still 889.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:23:19,956 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.29 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 945.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 285.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8832.57 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 115.9 MB). Free memory was 1.1 GB in the beginning and 889.8 MB in the end (delta: 217.2 MB). Peak memory consumption was 333.2 MB. Max. memory is 11.5 GB. * Witness Printer took 69.18 ms. Allocated memory is still 1.3 GB. Free memory is still 889.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 25]: Loop Invariant [2018-11-18 16:23:19,959 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,959 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,959 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,960 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,960 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,960 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) - InvariantResult [Line: 18]: Loop Invariant [2018-11-18 16:23:19,960 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,960 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,960 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,961 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,961 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,961 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: (((((0 == __retres4 && \old(e) <= e) && m == \old(m)) && e <= \old(e)) || (\old(e) <= e && \old(e) + 128 <= 0)) || (127 <= \old(e) && e <= \old(e))) || (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) - InvariantResult [Line: 47]: Loop Invariant [2018-11-18 16:23:19,962 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,962 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,962 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,962 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,962 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,963 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: (((\old(e) <= e && (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296)) && (\old(m) <= m || 0 < m / 4294967296 + 1)) && (m / 4294967296 + 1 <= 0 || 4294967296 * (m / 4294967296) + 16777216 <= \old(m))) && (m <= \old(m) || m / 4294967296 + 1 <= 0) - InvariantResult [Line: 147]: Loop Invariant [2018-11-18 16:23:19,963 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,963 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,963 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-18 16:23:19,964 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,964 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-18 16:23:19,964 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] Derived loop invariant: ((0 == __retres10 || (((\exists mulflt_~b : int :: mulflt_~b % 4294967296 <= \old(a) % 4294967296 && !(mulflt_~b % 4294967296 == 0)) && b % 4294967296 <= \old(a) % 4294967296) && a == \old(a))) || (b == \old(a) && !(\old(a) % 4294967296 == 0))) && ((\exists v_mulflt_~a_6 : int :: v_mulflt_~a_6 % 4294967296 < \old(b) % 4294967296) || (b == \old(b) && 0 == __retres10)) - InvariantResult [Line: 27]: Loop Invariant [2018-11-18 16:23:19,965 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,965 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,965 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,965 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,965 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-18 16:23:19,965 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) && e <= \old(e) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 74 locations, 1 error locations. SAFE Result, 8.7s OverallTime, 19 OverallIterations, 7 TraceHistogramMax, 4.0s AutomataDifference, 0.0s DeadEndRemovalTime, 1.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 1233 SDtfs, 1043 SDslu, 7670 SDs, 0 SdLazy, 4223 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1476 GetRequests, 1203 SyntacticMatches, 9 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 354 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 362 PreInvPairs, 1154 NumberOfFragments, 255 HoareAnnotationTreeSize, 362 FomulaSimplifications, 30772624 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 18 FomulaSimplificationsInter, 44222 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 2575 NumberOfCodeBlocks, 2575 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2539 ConstructedInterpolants, 30 QuantifiedInterpolants, 451677 SizeOfPredicates, 49 NumberOfNonLiveVariables, 3144 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 36 InterpolantComputations, 5 PerfectInterpolantSequences, 1198/2084 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...