./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb13e67548d34af589d64a91d36af5946c1dd198 ................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:25:32,176 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:25:32,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:25:32,184 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:25:32,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:25:32,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:25:32,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:25:32,187 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:25:32,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:25:32,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:25:32,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:25:32,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:25:32,191 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:25:32,192 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:25:32,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:25:32,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:25:32,194 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:25:32,195 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:25:32,196 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:25:32,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:25:32,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:25:32,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:25:32,201 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:25:32,201 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:25:32,201 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:25:32,202 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:25:32,203 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:25:32,203 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:25:32,204 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:25:32,205 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:25:32,205 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:25:32,205 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:25:32,205 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:25:32,206 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:25:32,206 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:25:32,207 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:25:32,207 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:25:32,217 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:25:32,218 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:25:32,218 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:25:32,218 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:25:32,219 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:25:32,219 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:25:32,219 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:25:32,219 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:25:32,220 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:25:32,221 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:25:32,221 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:25:32,221 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:25:32,221 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:25:32,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:25:32,221 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:25:32,221 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:25:32,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:25:32,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:25:32,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:25:32,222 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:25:32,222 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:25:32,222 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:25:32,222 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:25:32,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:25:32,223 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_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb13e67548d34af589d64a91d36af5946c1dd198 [2018-11-28 11:25:32,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:25:32,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:25:32,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:25:32,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:25:32,264 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:25:32,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-28 11:25:32,306 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/data/221d5fb3c/cfc3fd43aa7c4fdb83200d1836dbc3d7/FLAG351e788f3 [2018-11-28 11:25:32,649 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:25:32,650 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/sv-benchmarks/c/loop-lit/cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-28 11:25:32,654 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/data/221d5fb3c/cfc3fd43aa7c4fdb83200d1836dbc3d7/FLAG351e788f3 [2018-11-28 11:25:32,666 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/data/221d5fb3c/cfc3fd43aa7c4fdb83200d1836dbc3d7 [2018-11-28 11:25:32,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:25:32,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:25:32,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:25:32,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:25:32,674 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:25:32,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0bc48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32, skipping insertion in model container [2018-11-28 11:25:32,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:25:32,698 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:25:32,810 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:25:32,813 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:25:32,822 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:25:32,830 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:25:32,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32 WrapperNode [2018-11-28 11:25:32,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:25:32,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:25:32,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:25:32,831 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:25:32,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:25:32,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:25:32,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:25:32,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:25:32,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... [2018-11-28 11:25:32,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:25:32,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:25:32,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:25:32,858 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:25:32,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/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 [2018-11-28 11:25:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:25:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:25:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:25:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:25:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:25:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:25:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 11:25:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 11:25:33,017 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:25:33,017 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 11:25:33,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:33 BoogieIcfgContainer [2018-11-28 11:25:33,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:25:33,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:25:33,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:25:33,021 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:25:33,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:25:32" (1/3) ... [2018-11-28 11:25:33,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740dd37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:25:33, skipping insertion in model container [2018-11-28 11:25:33,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:32" (2/3) ... [2018-11-28 11:25:33,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740dd37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:25:33, skipping insertion in model container [2018-11-28 11:25:33,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:33" (3/3) ... [2018-11-28 11:25:33,024 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant_true-unreach-call_true-termination.c.i [2018-11-28 11:25:33,030 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:25:33,034 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:25:33,043 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:25:33,061 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:25:33,061 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:25:33,061 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:25:33,062 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:25:33,062 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:25:33,062 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:25:33,062 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:25:33,062 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:25:33,062 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:25:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 11:25:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:25:33,078 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:33,079 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:33,080 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:25:33,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:33,084 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2018-11-28 11:25:33,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:33,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:33,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:33,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:33,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:33,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:25:33,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 11:25:33,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 11:25:33,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:25:33,178 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-28 11:25:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:33,195 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-28 11:25:33,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:25:33,196 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-28 11:25:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:33,200 INFO L225 Difference]: With dead ends: 31 [2018-11-28 11:25:33,201 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 11:25:33,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 11:25:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 11:25:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 11:25:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 11:25:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 11:25:33,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2018-11-28 11:25:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:33,225 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 11:25:33,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 11:25:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 11:25:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 11:25:33,226 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:33,226 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:33,227 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:25:33,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:33,227 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2018-11-28 11:25:33,227 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:33,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:33,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:33,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:33,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:25:33,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:25:33,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 11:25:33,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:25:33,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:25:33,254 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-28 11:25:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:33,267 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 11:25:33,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:25:33,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 11:25:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:33,268 INFO L225 Difference]: With dead ends: 18 [2018-11-28 11:25:33,268 INFO L226 Difference]: Without dead ends: 13 [2018-11-28 11:25:33,269 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:25:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-28 11:25:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-28 11:25:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-28 11:25:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-28 11:25:33,272 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-28 11:25:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:33,272 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-28 11:25:33,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 11:25:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-28 11:25:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 11:25:33,273 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:33,273 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:33,273 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:25:33,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2018-11-28 11:25:33,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:33,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:33,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:33,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:25:33,456 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/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 [2018-11-28 11:25:33,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:33,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:33,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:25:33,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-11-28 11:25:33,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 11:25:33,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 11:25:33,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:25:33,630 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-11-28 11:25:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:33,696 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-28 11:25:33,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:25:33,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-11-28 11:25:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:33,697 INFO L225 Difference]: With dead ends: 19 [2018-11-28 11:25:33,697 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 11:25:33,698 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-28 11:25:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 11:25:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 11:25:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 11:25:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-28 11:25:33,701 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-28 11:25:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:33,702 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-28 11:25:33,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 11:25:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-28 11:25:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 11:25:33,702 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:25:33,702 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:25:33,702 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:25:33,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash -304408769, now seen corresponding path program 2 times [2018-11-28 11:25:33,703 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:33,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:33,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:33,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 11:25:33,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:25:33,834 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/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 [2018-11-28 11:25:33,841 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 11:25:33,849 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 11:25:33,849 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 11:25:33,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:33,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:25:33,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2018-11-28 11:25:33,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 11:25:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 11:25:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-28 11:25:33,979 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2018-11-28 11:25:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:25:34,137 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-11-28 11:25:34,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 11:25:34,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-11-28 11:25:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:25:34,137 INFO L225 Difference]: With dead ends: 16 [2018-11-28 11:25:34,137 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 11:25:34,138 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-28 11:25:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 11:25:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 11:25:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 11:25:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:25:34,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-28 11:25:34,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:25:34,139 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:25:34,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 11:25:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:25:34,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 11:25:34,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 11:25:34,223 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 11:25:34,223 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:25:34,223 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 11:25:34,223 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 11:25:34,223 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 11:25:34,223 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 11:25:34,223 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-11-28 11:25:34,224 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-11-28 11:25:34,224 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-28 11:25:34,224 INFO L448 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-28 11:25:34,224 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2018-11-28 11:25:34,224 INFO L444 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (and (<= main_~lo~0 1) (exists ((v_main_~mid~0_9 Int)) (and (= (* 2 v_main_~mid~0_9) (+ main_~hi~0 1)) (<= v_main_~mid~0_9 1) (< 0 v_main_~mid~0_9))) (<= 1 main_~lo~0) (exists ((v_main_~mid~0_9 Int)) (and (<= v_main_~mid~0_9 (+ main_~mid~0 1)) (= (* 2 v_main_~mid~0_9) (+ main_~hi~0 1)) (< 0 v_main_~mid~0_9)))) (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0)))) [2018-11-28 11:25:34,224 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-11-28 11:25:34,224 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-28 11:25:34,225 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-28 11:25:34,225 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-28 11:25:34,225 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-28 11:25:34,225 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-28 11:25:34,225 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-28 11:25:34,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:25:34 BoogieIcfgContainer [2018-11-28 11:25:34,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:25:34,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:25:34,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:25:34,235 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:25:34,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:33" (3/4) ... [2018-11-28 11:25:34,238 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 11:25:34,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 11:25:34,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 11:25:34,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 11:25:34,247 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 11:25:34,247 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 11:25:34,248 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 11:25:34,278 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b48528be-ce49-4d01-b60a-5cf1c56effd7/bin-2019/uautomizer/witness.graphml [2018-11-28 11:25:34,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:25:34,278 INFO L168 Benchmark]: Toolchain (without parser) took 1609.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 953.3 MB in the beginning and 969.3 MB in the end (delta: -16.0 MB). Peak memory consumption was 110.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:34,279 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:34,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.65 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:34,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.58 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:34,280 INFO L168 Benchmark]: Boogie Preprocessor took 13.36 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:34,280 INFO L168 Benchmark]: RCFGBuilder took 160.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:34,281 INFO L168 Benchmark]: TraceAbstraction took 1215.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.0 MB in the end (delta: 140.7 MB). Peak memory consumption was 140.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:34,281 INFO L168 Benchmark]: Witness Printer took 43.32 ms. Allocated memory is still 1.2 GB. Free memory was 972.0 MB in the beginning and 969.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:34,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.65 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 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 12.58 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.36 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 160.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1215.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.0 MB in the end (delta: 140.7 MB). Peak memory consumption was 140.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.32 ms. Allocated memory is still 1.2 GB. Free memory was 972.0 MB in the beginning and 969.3 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: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 10 SDslu, 105 SDs, 0 SdLazy, 91 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 84 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 4 QuantifiedInterpolants, 3544 SizeOfPredicates, 6 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...