./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_2x3_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_2x3_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/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 5484cff0bd7499490d21ca1aa6f81abc8cec50b0 ....................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 09:27:55,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 09:27:55,142 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 09:27:55,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 09:27:55,152 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 09:27:55,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 09:27:55,153 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 09:27:55,155 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 09:27:55,156 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 09:27:55,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 09:27:55,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 09:27:55,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 09:27:55,158 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 09:27:55,159 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 09:27:55,159 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 09:27:55,160 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 09:27:55,161 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 09:27:55,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 09:27:55,163 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 09:27:55,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 09:27:55,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 09:27:55,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 09:27:55,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 09:27:55,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 09:27:55,168 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 09:27:55,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 09:27:55,170 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 09:27:55,171 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 09:27:55,171 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 09:27:55,172 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 09:27:55,172 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 09:27:55,173 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 09:27:55,173 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 09:27:55,173 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 09:27:55,174 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 09:27:55,174 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 09:27:55,174 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 09:27:55,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 09:27:55,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 09:27:55,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 09:27:55,186 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 09:27:55,186 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 09:27:55,186 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 09:27:55,187 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 09:27:55,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 09:27:55,187 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 09:27:55,187 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 09:27:55,187 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 09:27:55,187 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 09:27:55,187 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 09:27:55,188 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 09:27:55,188 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 09:27:55,188 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 09:27:55,188 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 09:27:55,188 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 09:27:55,188 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 09:27:55,189 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 09:27:55,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 09:27:55,189 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 09:27:55,189 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 09:27:55,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 09:27:55,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 09:27:55,189 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 09:27:55,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 09:27:55,190 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 09:27:55,190 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 09:27:55,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 09:27:55,190 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_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/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 -> 5484cff0bd7499490d21ca1aa6f81abc8cec50b0 [2018-11-23 09:27:55,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 09:27:55,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 09:27:55,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 09:27:55,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 09:27:55,225 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 09:27:55,225 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_2x3_true-unreach-call_true-termination.c [2018-11-23 09:27:55,265 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/data/e23738e0b/3ca12eccfa7a4201b736c63952a012c2/FLAG576d20b53 [2018-11-23 09:27:55,667 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 09:27:55,667 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/sv-benchmarks/c/recursive-simple/sum_2x3_true-unreach-call_true-termination.c [2018-11-23 09:27:55,671 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/data/e23738e0b/3ca12eccfa7a4201b736c63952a012c2/FLAG576d20b53 [2018-11-23 09:27:55,681 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/data/e23738e0b/3ca12eccfa7a4201b736c63952a012c2 [2018-11-23 09:27:55,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 09:27:55,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 09:27:55,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 09:27:55,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 09:27:55,687 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 09:27:55,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4044db79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55, skipping insertion in model container [2018-11-23 09:27:55,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 09:27:55,707 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 09:27:55,816 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:27:55,818 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 09:27:55,827 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:27:55,836 INFO L195 MainTranslator]: Completed translation [2018-11-23 09:27:55,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55 WrapperNode [2018-11-23 09:27:55,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 09:27:55,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 09:27:55,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 09:27:55,836 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 09:27:55,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 09:27:55,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 09:27:55,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 09:27:55,849 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 09:27:55,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... [2018-11-23 09:27:55,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 09:27:55,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 09:27:55,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 09:27:55,861 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 09:27:55,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/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 [2018-11-23 09:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 09:27:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 09:27:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 09:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 09:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-23 09:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-23 09:27:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 09:27:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 09:27:56,048 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 09:27:56,049 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 09:27:56,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:56 BoogieIcfgContainer [2018-11-23 09:27:56,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 09:27:56,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 09:27:56,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 09:27:56,052 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 09:27:56,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:55" (1/3) ... [2018-11-23 09:27:56,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a13eb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:56, skipping insertion in model container [2018-11-23 09:27:56,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:55" (2/3) ... [2018-11-23 09:27:56,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a13eb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:56, skipping insertion in model container [2018-11-23 09:27:56,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:56" (3/3) ... [2018-11-23 09:27:56,055 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_2x3_true-unreach-call_true-termination.c [2018-11-23 09:27:56,062 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 09:27:56,068 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 09:27:56,078 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 09:27:56,097 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 09:27:56,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 09:27:56,097 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 09:27:56,098 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 09:27:56,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 09:27:56,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 09:27:56,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 09:27:56,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 09:27:56,098 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 09:27:56,109 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-23 09:27:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 09:27:56,114 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:27:56,114 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:27:56,116 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:27:56,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:27:56,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2018-11-23 09:27:56,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:27:56,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:27:56,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:56,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:27:56,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:27:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 09:27:56,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:27:56,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 09:27:56,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 09:27:56,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 09:27:56,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 09:27:56,255 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-11-23 09:27:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:27:56,316 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-11-23 09:27:56,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 09:27:56,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 09:27:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:27:56,323 INFO L225 Difference]: With dead ends: 30 [2018-11-23 09:27:56,323 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 09:27:56,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 09:27:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 09:27:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-23 09:27:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-23 09:27:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-23 09:27:56,353 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-11-23 09:27:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:27:56,353 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-23 09:27:56,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 09:27:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-23 09:27:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 09:27:56,355 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:27:56,355 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:27:56,355 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:27:56,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:27:56,356 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2018-11-23 09:27:56,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:27:56,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:27:56,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:56,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:27:56,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:27:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 09:27:56,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:27:56,414 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/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 [2018-11-23 09:27:56,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:27:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:27:56,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:27:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 09:27:56,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:27:56,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 09:27:56,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 09:27:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 09:27:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 09:27:56,491 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2018-11-23 09:27:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:27:56,568 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-23 09:27:56,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 09:27:56,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-23 09:27:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:27:56,569 INFO L225 Difference]: With dead ends: 25 [2018-11-23 09:27:56,569 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 09:27:56,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 09:27:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 09:27:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 09:27:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 09:27:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-23 09:27:56,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2018-11-23 09:27:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:27:56,575 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-23 09:27:56,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 09:27:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-23 09:27:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 09:27:56,576 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:27:56,576 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:27:56,576 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:27:56,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:27:56,576 INFO L82 PathProgramCache]: Analyzing trace with hash 764931548, now seen corresponding path program 2 times [2018-11-23 09:27:56,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:27:56,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:27:56,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:56,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:27:56,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:27:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 09:27:56,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:27:56,794 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/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 [2018-11-23 09:27:56,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 09:27:56,824 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 09:27:56,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:27:56,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:27:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 09:27:56,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:27:56,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2018-11-23 09:27:56,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 09:27:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 09:27:56,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-11-23 09:27:56,963 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 17 states. [2018-11-23 09:27:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:27:57,253 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-23 09:27:57,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 09:27:57,253 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2018-11-23 09:27:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:27:57,254 INFO L225 Difference]: With dead ends: 28 [2018-11-23 09:27:57,254 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 09:27:57,255 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2018-11-23 09:27:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 09:27:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-23 09:27:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 09:27:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-23 09:27:57,259 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2018-11-23 09:27:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:27:57,260 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-23 09:27:57,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 09:27:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-23 09:27:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 09:27:57,260 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:27:57,260 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:27:57,261 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:27:57,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:27:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash 601942852, now seen corresponding path program 3 times [2018-11-23 09:27:57,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 09:27:57,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 09:27:57,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:57,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:27:57,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:27:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:27:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 09:27:57,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:27:57,327 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/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 [2018-11-23 09:27:57,337 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 09:27:57,349 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 09:27:57,349 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:27:57,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:27:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 09:27:57,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:27:57,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 09:27:57,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 09:27:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 09:27:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-23 09:27:57,378 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2018-11-23 09:27:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:27:57,407 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-23 09:27:57,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 09:27:57,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2018-11-23 09:27:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:27:57,408 INFO L225 Difference]: With dead ends: 24 [2018-11-23 09:27:57,408 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 09:27:57,409 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-23 09:27:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 09:27:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 09:27:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 09:27:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 09:27:57,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-23 09:27:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:27:57,409 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 09:27:57,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 09:27:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 09:27:57,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 09:27:57,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 09:27:57,439 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 09:27:57,439 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 09:27:57,439 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 09:27:57,439 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 09:27:57,439 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 09:27:57,439 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 09:27:57,439 INFO L448 ceAbstractionStarter]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2018-11-23 09:27:57,439 INFO L444 ceAbstractionStarter]: At program point L7(line 7) the Hoare annotation is: (and (<= |sum_#in~m| sum_~m) (<= sum_~m |sum_#in~m|) (<= sum_~n |sum_#in~n|) (< 0 sum_~n) (<= |sum_#in~n| sum_~n)) [2018-11-23 09:27:57,439 INFO L448 ceAbstractionStarter]: For program point L7-1(line 7) no Hoare annotation was computed. [2018-11-23 09:27:57,440 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 8) no Hoare annotation was computed. [2018-11-23 09:27:57,440 INFO L448 ceAbstractionStarter]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2018-11-23 09:27:57,440 INFO L451 ceAbstractionStarter]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2018-11-23 09:27:57,440 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-11-23 09:27:57,440 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-23 09:27:57,440 INFO L448 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-11-23 09:27:57,440 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-11-23 09:27:57,440 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2018-11-23 09:27:57,441 INFO L444 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= 2 main_~a~0) (<= main_~a~0 2)) [2018-11-23 09:27:57,441 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-23 09:27:57,441 INFO L448 ceAbstractionStarter]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2018-11-23 09:27:57,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:27:57 BoogieIcfgContainer [2018-11-23 09:27:57,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 09:27:57,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 09:27:57,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 09:27:57,444 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 09:27:57,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:56" (3/4) ... [2018-11-23 09:27:57,447 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 09:27:57,451 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 09:27:57,452 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2018-11-23 09:27:57,452 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 09:27:57,455 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 09:27:57,455 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 09:27:57,455 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 09:27:57,486 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6c45ebb1-bd5a-4f27-adfd-4acd3c18c51b/bin-2019/uautomizer/witness.graphml [2018-11-23 09:27:57,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 09:27:57,487 INFO L168 Benchmark]: Toolchain (without parser) took 1802.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 959.3 MB in the beginning and 944.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 152.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:27:57,488 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:27:57,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:27:57,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.34 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:27:57,489 INFO L168 Benchmark]: Boogie Preprocessor took 11.86 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:27:57,489 INFO L168 Benchmark]: RCFGBuilder took 188.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -180.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 09:27:57,490 INFO L168 Benchmark]: TraceAbstraction took 1393.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 947.1 MB in the end (delta: 176.6 MB). Peak memory consumption was 176.6 MB. Max. memory is 11.5 GB. [2018-11-23 09:27:57,490 INFO L168 Benchmark]: Witness Printer took 42.56 ms. Allocated memory is still 1.2 GB. Free memory was 947.1 MB in the beginning and 944.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:27:57,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 151.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.34 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.86 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -180.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1393.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 947.1 MB in the end (delta: 176.6 MB). Peak memory consumption was 176.6 MB. Max. memory is 11.5 GB. * Witness Printer took 42.56 ms. Allocated memory is still 1.2 GB. Free memory was 947.1 MB in the beginning and 944.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 196 SDs, 0 SdLazy, 203 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 28 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 13320 SizeOfPredicates, 15 NumberOfNonLiveVariables, 216 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 65/96 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...