./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77e92a11a4549a6f714898b45c2d349723607a29 ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 10:08:50,077 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:08:50,078 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:08:50,087 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:08:50,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:08:50,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:08:50,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:08:50,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:08:50,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:08:50,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:08:50,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:08:50,092 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:08:50,093 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:08:50,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:08:50,094 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:08:50,095 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:08:50,095 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:08:50,097 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:08:50,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:08:50,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:08:50,100 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:08:50,101 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:08:50,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:08:50,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:08:50,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:08:50,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:08:50,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:08:50,104 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:08:50,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:08:50,106 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:08:50,106 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:08:50,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:08:50,107 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:08:50,107 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:08:50,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:08:50,108 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:08:50,108 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 10:08:50,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:08:50,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:08:50,119 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:08:50,119 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 10:08:50,119 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 10:08:50,119 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 10:08:50,119 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 10:08:50,120 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 10:08:50,120 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 10:08:50,120 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 10:08:50,120 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 10:08:50,120 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:08:50,121 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:08:50,122 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 10:08:50,122 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:08:50,122 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:08:50,122 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:08:50,122 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 10:08:50,122 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:08:50,122 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:08:50,123 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 10:08:50,123 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 10:08:50,124 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan 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 -> Taipan 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 -> 77e92a11a4549a6f714898b45c2d349723607a29 [2018-11-10 10:08:50,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:08:50,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:08:50,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:08:50,156 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:08:50,156 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:08:50,157 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-11-10 10:08:50,192 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/data/97f665e15/015a8cde93ec4c56913c08dbc06c45d1/FLAG52cdf8062 [2018-11-10 10:08:50,588 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:08:50,588 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-11-10 10:08:50,593 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/data/97f665e15/015a8cde93ec4c56913c08dbc06c45d1/FLAG52cdf8062 [2018-11-10 10:08:50,602 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/data/97f665e15/015a8cde93ec4c56913c08dbc06c45d1 [2018-11-10 10:08:50,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:08:50,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 10:08:50,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:08:50,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:08:50,608 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:08:50,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec8ce22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50, skipping insertion in model container [2018-11-10 10:08:50,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:08:50,629 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:08:50,726 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:08:50,728 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:08:50,739 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:08:50,747 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:08:50,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50 WrapperNode [2018-11-10 10:08:50,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:08:50,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 10:08:50,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 10:08:50,748 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 10:08:50,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 10:08:50,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:08:50,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:08:50,760 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:08:50,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... [2018-11-10 10:08:50,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:08:50,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:08:50,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:08:50,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:08:50,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:08:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 10:08:50,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 10:08:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:08:50,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:08:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 10:08:50,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 10:08:50,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 10:08:50,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 10:08:50,991 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:08:50,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:08:50 BoogieIcfgContainer [2018-11-10 10:08:50,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:08:50,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 10:08:50,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 10:08:50,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 10:08:50,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:08:50" (1/3) ... [2018-11-10 10:08:50,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250712cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:50, skipping insertion in model container [2018-11-10 10:08:50,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:50" (2/3) ... [2018-11-10 10:08:50,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@250712cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:50, skipping insertion in model container [2018-11-10 10:08:50,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:08:50" (3/3) ... [2018-11-10 10:08:50,997 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok_true-unreach-call_true-termination.i [2018-11-10 10:08:51,003 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 10:08:51,009 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 10:08:51,022 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 10:08:51,049 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 10:08:51,049 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 10:08:51,050 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 10:08:51,050 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 10:08:51,050 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 10:08:51,050 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 10:08:51,050 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 10:08:51,050 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 10:08:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-10 10:08:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 10:08:51,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:08:51,070 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:08:51,072 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:08:51,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:08:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash 802506358, now seen corresponding path program 1 times [2018-11-10 10:08:51,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:08:51,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:08:51,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:08:51,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:08:51,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:08:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:08:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:08:51,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:08:51,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 10:08:51,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:08:51,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 10:08:51,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 10:08:51,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 10:08:51,250 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2018-11-10 10:08:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:08:51,324 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2018-11-10 10:08:51,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 10:08:51,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-10 10:08:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:08:51,330 INFO L225 Difference]: With dead ends: 53 [2018-11-10 10:08:51,331 INFO L226 Difference]: Without dead ends: 29 [2018-11-10 10:08:51,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-10 10:08:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-10 10:08:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-10 10:08:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 10:08:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-10 10:08:51,357 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-11-10 10:08:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:08:51,357 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-10 10:08:51,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 10:08:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-10 10:08:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 10:08:51,358 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:08:51,358 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:08:51,358 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:08:51,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:08:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1083684374, now seen corresponding path program 1 times [2018-11-10 10:08:51,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:08:51,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:08:51,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:08:51,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:08:51,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:08:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:08:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:08:51,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:08:51,472 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 10:08:51,473 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-10 10:08:51,474 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [25], [31], [39], [44], [48], [53], [63], [66], [68], [71], [73], [74], [75], [76], [78], [79], [80] [2018-11-10 10:08:51,505 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 10:08:51,505 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 10:08:51,615 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 10:08:51,617 INFO L272 AbstractInterpreter]: Visited 23 different actions 27 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-11-10 10:08:51,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:08:51,621 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 10:08:51,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:08:51,621 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 10:08:51,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:08:51,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 10:08:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:08:51,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:08:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:08:51,693 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:08:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:08:51,749 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-10 10:08:51,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 11 [2018-11-10 10:08:51,749 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:08:51,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 10:08:51,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 10:08:51,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-10 10:08:51,750 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2018-11-10 10:08:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:08:51,813 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2018-11-10 10:08:51,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 10:08:51,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-10 10:08:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:08:51,815 INFO L225 Difference]: With dead ends: 40 [2018-11-10 10:08:51,815 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 10:08:51,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-10 10:08:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 10:08:51,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-11-10 10:08:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 10:08:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-10 10:08:51,824 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 24 [2018-11-10 10:08:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:08:51,824 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-10 10:08:51,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 10:08:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-10 10:08:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 10:08:51,826 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:08:51,826 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:08:51,826 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:08:51,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:08:51,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1354781823, now seen corresponding path program 1 times [2018-11-10 10:08:51,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:08:51,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:08:51,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:08:51,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:08:51,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:08:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:08:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 10:08:51,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:08:51,920 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 10:08:51,920 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-11-10 10:08:51,920 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [25], [31], [39], [44], [48], [53], [56], [58], [63], [66], [68], [71], [73], [74], [75], [76], [78], [79], [80], [81] [2018-11-10 10:08:51,922 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 10:08:51,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 10:08:52,154 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 10:08:52,154 INFO L272 AbstractInterpreter]: Visited 26 different actions 285 times. Merged at 6 different actions 90 times. Widened at 1 different actions 11 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-10 10:08:52,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:08:52,157 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 10:08:52,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:08:52,158 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 10:08:52,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:08:52,166 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 10:08:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:08:52,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:08:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 10:08:52,286 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:08:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 10:08:52,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 10:08:52,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2018-11-10 10:08:52,435 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 10:08:52,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 10:08:52,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 10:08:52,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-11-10 10:08:52,436 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 14 states. [2018-11-10 10:08:52,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:08:52,609 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-11-10 10:08:52,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 10:08:52,609 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-11-10 10:08:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:08:52,610 INFO L225 Difference]: With dead ends: 44 [2018-11-10 10:08:52,610 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 10:08:52,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-11-10 10:08:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 10:08:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 10:08:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 10:08:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 10:08:52,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-11-10 10:08:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:08:52,612 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 10:08:52,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 10:08:52,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 10:08:52,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 10:08:52,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 10:08:52,699 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 10:08:52,699 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:08:52,699 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:08:52,700 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 10:08:52,700 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 10:08:52,700 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 10:08:52,700 INFO L425 ceAbstractionStarter]: For program point L35-3(lines 35 39) no Hoare annotation was computed. [2018-11-10 10:08:52,700 INFO L421 ceAbstractionStarter]: At program point L35-4(lines 35 39) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= 1 main_~p~0)) [2018-11-10 10:08:52,700 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 42) no Hoare annotation was computed. [2018-11-10 10:08:52,700 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L428 ceAbstractionStarter]: At program point L40(lines 10 42) the Hoare annotation is: true [2018-11-10 10:08:52,701 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2018-11-10 10:08:52,701 INFO L421 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-10 10:08:52,701 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 42) the Hoare annotation is: true [2018-11-10 10:08:52,701 INFO L425 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point L35-1(lines 35 39) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 10:08:52,702 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 10:08:52,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:08:52 BoogieIcfgContainer [2018-11-10 10:08:52,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 10:08:52,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 10:08:52,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 10:08:52,711 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 10:08:52,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:08:50" (3/4) ... [2018-11-10 10:08:52,713 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 10:08:52,717 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 10:08:52,717 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 10:08:52,717 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 10:08:52,720 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-10 10:08:52,720 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 10:08:52,721 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 10:08:52,753 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_19711dd7-9d41-4f8e-9c57-6b470f9c862e/bin-2019/utaipan/witness.graphml [2018-11-10 10:08:52,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 10:08:52,754 INFO L168 Benchmark]: Toolchain (without parser) took 2149.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 959.2 MB in the beginning and 906.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 223.3 MB. Max. memory is 11.5 GB. [2018-11-10 10:08:52,755 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-11-10 10:08:52,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 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. [2018-11-10 10:08:52,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.38 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. [2018-11-10 10:08:52,756 INFO L168 Benchmark]: Boogie Preprocessor took 13.86 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. [2018-11-10 10:08:52,756 INFO L168 Benchmark]: RCFGBuilder took 217.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-10 10:08:52,757 INFO L168 Benchmark]: TraceAbstraction took 1717.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 910.2 MB in the end (delta: 246.9 MB). Peak memory consumption was 246.9 MB. Max. memory is 11.5 GB. [2018-11-10 10:08:52,757 INFO L168 Benchmark]: Witness Printer took 43.08 ms. Allocated memory is still 1.2 GB. Free memory was 910.2 MB in the beginning and 906.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-10 10:08:52,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.12 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 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 11.38 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 13.86 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 217.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1717.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 910.2 MB in the end (delta: 246.9 MB). Peak memory consumption was 246.9 MB. Max. memory is 11.5 GB. * Witness Printer took 43.08 ms. Allocated memory is still 1.2 GB. Free memory was 910.2 MB in the beginning and 906.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + 2 * i && 1 <= leader_len) && 1 <= p - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 44 SDslu, 338 SDs, 0 SdLazy, 198 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 198 ConstructedInterpolants, 1 QuantifiedInterpolants, 20168 SizeOfPredicates, 15 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 54/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...