./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/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 0d29117e01c2d68b456be2ae55b4c10d8b73c290 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 17:21:25,049 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 17:21:25,050 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 17:21:25,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 17:21:25,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 17:21:25,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 17:21:25,057 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 17:21:25,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 17:21:25,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 17:21:25,059 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 17:21:25,060 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 17:21:25,060 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 17:21:25,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 17:21:25,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 17:21:25,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 17:21:25,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 17:21:25,062 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 17:21:25,063 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 17:21:25,064 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 17:21:25,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 17:21:25,065 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 17:21:25,066 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 17:21:25,067 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 17:21:25,067 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 17:21:25,067 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 17:21:25,068 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 17:21:25,068 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 17:21:25,069 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 17:21:25,069 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 17:21:25,070 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 17:21:25,070 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 17:21:25,070 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 17:21:25,070 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 17:21:25,071 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 17:21:25,071 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 17:21:25,071 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 17:21:25,072 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 17:21:25,079 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 17:21:25,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 17:21:25,080 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 17:21:25,080 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 17:21:25,080 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 17:21:25,080 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 17:21:25,080 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 17:21:25,080 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 17:21:25,080 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 17:21:25,080 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 17:21:25,081 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 17:21:25,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 17:21:25,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 17:21:25,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 17:21:25,082 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_3bfdf739-178f-418e-a7f0-e05f385f68ab/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 -> 0d29117e01c2d68b456be2ae55b4c10d8b73c290 [2018-12-01 17:21:25,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 17:21:25,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 17:21:25,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 17:21:25,109 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 17:21:25,109 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 17:21:25,110 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i [2018-12-01 17:21:25,144 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/data/9525cb1fc/8254641d122c4315ac8eec77404e4dd7/FLAG5ca3da6f0 [2018-12-01 17:21:25,492 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 17:21:25,493 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i [2018-12-01 17:21:25,496 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/data/9525cb1fc/8254641d122c4315ac8eec77404e4dd7/FLAG5ca3da6f0 [2018-12-01 17:21:25,885 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/data/9525cb1fc/8254641d122c4315ac8eec77404e4dd7 [2018-12-01 17:21:25,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 17:21:25,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 17:21:25,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 17:21:25,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 17:21:25,891 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 17:21:25,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:21:25" (1/1) ... [2018-12-01 17:21:25,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:25, skipping insertion in model container [2018-12-01 17:21:25,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:21:25" (1/1) ... [2018-12-01 17:21:25,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 17:21:25,908 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 17:21:25,991 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 17:21:25,994 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 17:21:26,001 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 17:21:26,009 INFO L195 MainTranslator]: Completed translation [2018-12-01 17:21:26,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26 WrapperNode [2018-12-01 17:21:26,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 17:21:26,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 17:21:26,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 17:21:26,010 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 17:21:26,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 17:21:26,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 17:21:26,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 17:21:26,026 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 17:21:26,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... [2018-12-01 17:21:26,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 17:21:26,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 17:21:26,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 17:21:26,041 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 17:21:26,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/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 [2018-12-01 17:21:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 17:21:26,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 17:21:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 17:21:26,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 17:21:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 17:21:26,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 17:21:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 17:21:26,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 17:21:26,185 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 17:21:26,185 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 17:21:26,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:21:26 BoogieIcfgContainer [2018-12-01 17:21:26,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 17:21:26,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 17:21:26,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 17:21:26,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 17:21:26,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 05:21:25" (1/3) ... [2018-12-01 17:21:26,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a7889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 05:21:26, skipping insertion in model container [2018-12-01 17:21:26,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:21:26" (2/3) ... [2018-12-01 17:21:26,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a7889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 05:21:26, skipping insertion in model container [2018-12-01 17:21:26,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:21:26" (3/3) ... [2018-12-01 17:21:26,192 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_false-unreach-call1_true-termination.i [2018-12-01 17:21:26,200 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 17:21:26,206 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 17:21:26,217 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 17:21:26,240 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 17:21:26,240 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 17:21:26,241 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 17:21:26,241 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 17:21:26,241 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 17:21:26,241 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 17:21:26,241 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 17:21:26,241 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 17:21:26,241 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 17:21:26,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-01 17:21:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 17:21:26,256 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:26,257 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:26,258 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:26,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-01 17:21:26,263 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:26,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:26,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:21:26,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 17:21:26,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 17:21:26,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 17:21:26,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 17:21:26,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 17:21:26,387 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-01 17:21:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:21:26,403 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-12-01 17:21:26,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 17:21:26,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-01 17:21:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:21:26,409 INFO L225 Difference]: With dead ends: 29 [2018-12-01 17:21:26,409 INFO L226 Difference]: Without dead ends: 12 [2018-12-01 17:21:26,411 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 [2018-12-01 17:21:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-01 17:21:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-01 17:21:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 17:21:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-01 17:21:26,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-01 17:21:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:21:26,431 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-01 17:21:26,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 17:21:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-01 17:21:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 17:21:26,432 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:26,432 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:26,432 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:26,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-01 17:21:26,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:26,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:26,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:21:26,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:21:26,472 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/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 [2018-12-01 17:21:26,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:21:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:21:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:21:26,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-01 17:21:26,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 17:21:26,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 17:21:26,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 17:21:26,532 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-12-01 17:21:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:21:26,543 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-01 17:21:26,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 17:21:26,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-01 17:21:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:21:26,544 INFO L225 Difference]: With dead ends: 18 [2018-12-01 17:21:26,544 INFO L226 Difference]: Without dead ends: 13 [2018-12-01 17:21:26,545 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 17:21:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-01 17:21:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-01 17:21:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-01 17:21:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-01 17:21:26,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-01 17:21:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:21:26,547 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-01 17:21:26,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 17:21:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-01 17:21:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-01 17:21:26,547 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:26,547 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:26,548 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:26,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:26,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2018-12-01 17:21:26,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:26,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:26,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 17:21:26,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:21:26,597 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/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 [2018-12-01 17:21:26,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 17:21:26,614 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 17:21:26,614 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 17:21:26,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:21:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:21:26,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-01 17:21:26,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 17:21:26,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 17:21:26,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:21:26,642 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-12-01 17:21:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:21:26,659 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-01 17:21:26,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 17:21:26,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-01 17:21:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:21:26,659 INFO L225 Difference]: With dead ends: 19 [2018-12-01 17:21:26,659 INFO L226 Difference]: Without dead ends: 14 [2018-12-01 17:21:26,660 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-01 17:21:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-01 17:21:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-01 17:21:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-01 17:21:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-01 17:21:26,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-01 17:21:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:21:26,662 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-01 17:21:26,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 17:21:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-01 17:21:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 17:21:26,662 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:26,662 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:26,662 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:26,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:26,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2018-12-01 17:21:26,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:26,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:26,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 17:21:26,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:21:26,702 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 17:21:26,708 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 17:21:26,715 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-01 17:21:26,715 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 17:21:26,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:21:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:21:26,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-01 17:21:26,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 17:21:26,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 17:21:26,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-01 17:21:26,750 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2018-12-01 17:21:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:21:26,769 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-01 17:21:26,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 17:21:26,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-01 17:21:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:21:26,770 INFO L225 Difference]: With dead ends: 20 [2018-12-01 17:21:26,770 INFO L226 Difference]: Without dead ends: 15 [2018-12-01 17:21:26,770 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-01 17:21:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-01 17:21:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-01 17:21:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-01 17:21:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-01 17:21:26,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-12-01 17:21:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:21:26,772 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-01 17:21:26,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 17:21:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-01 17:21:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 17:21:26,773 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:26,773 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:26,773 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:26,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:26,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 4 times [2018-12-01 17:21:26,774 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:26,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:26,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 17:21:26,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:21:26,840 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 17:21:26,848 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 17:21:26,856 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 17:21:26,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 17:21:26,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:21:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:21:26,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-01 17:21:26,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 17:21:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 17:21:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-01 17:21:26,884 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-12-01 17:21:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:21:26,900 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-01 17:21:26,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 17:21:26,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-01 17:21:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:21:26,901 INFO L225 Difference]: With dead ends: 21 [2018-12-01 17:21:26,901 INFO L226 Difference]: Without dead ends: 16 [2018-12-01 17:21:26,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-01 17:21:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-01 17:21:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-01 17:21:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-01 17:21:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-01 17:21:26,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-12-01 17:21:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:21:26,903 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-01 17:21:26,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 17:21:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-01 17:21:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 17:21:26,903 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:26,904 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:26,904 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:26,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1860436335, now seen corresponding path program 5 times [2018-12-01 17:21:26,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:26,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:26,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 17:21:26,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 17:21:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:26,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 17:21:26,962 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 17:21:26,968 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 17:21:26,977 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-12-01 17:21:26,977 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 17:21:26,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 17:21:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 17:21:27,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 17:21:27,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-12-01 17:21:27,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 17:21:27,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 17:21:27,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-01 17:21:27,010 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-12-01 17:21:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 17:21:27,031 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-12-01 17:21:27,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 17:21:27,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-12-01 17:21:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 17:21:27,032 INFO L225 Difference]: With dead ends: 22 [2018-12-01 17:21:27,032 INFO L226 Difference]: Without dead ends: 17 [2018-12-01 17:21:27,033 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-01 17:21:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-01 17:21:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-01 17:21:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-01 17:21:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-01 17:21:27,035 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-12-01 17:21:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 17:21:27,035 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-01 17:21:27,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 17:21:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-01 17:21:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 17:21:27,036 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 17:21:27,036 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 17:21:27,036 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 17:21:27,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 17:21:27,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 6 times [2018-12-01 17:21:27,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 17:21:27,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 17:21:27,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:27,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 17:21:27,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 17:21:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 17:21:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 17:21:27,067 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 17:21:27,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 05:21:27 BoogieIcfgContainer [2018-12-01 17:21:27,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 17:21:27,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 17:21:27,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 17:21:27,085 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 17:21:27,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:21:26" (3/4) ... [2018-12-01 17:21:27,087 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 17:21:27,114 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3bfdf739-178f-418e-a7f0-e05f385f68ab/bin-2019/uautomizer/witness.graphml [2018-12-01 17:21:27,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 17:21:27,114 INFO L168 Benchmark]: Toolchain (without parser) took 1226.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 956.0 MB in the beginning and 956.8 MB in the end (delta: -782.9 kB). Peak memory consumption was 124.0 MB. Max. memory is 11.5 GB. [2018-12-01 17:21:27,115 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 17:21:27,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.98 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 17:21:27,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.97 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 17:21:27,116 INFO L168 Benchmark]: Boogie Preprocessor took 14.88 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 17:21:27,116 INFO L168 Benchmark]: RCFGBuilder took 144.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-01 17:21:27,116 INFO L168 Benchmark]: TraceAbstraction took 897.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.5 MB in the end (delta: 138.8 MB). Peak memory consumption was 138.8 MB. Max. memory is 11.5 GB. [2018-12-01 17:21:27,116 INFO L168 Benchmark]: Witness Printer took 29.42 ms. Allocated memory is still 1.2 GB. Free memory was 963.5 MB in the beginning and 956.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-01 17:21:27,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.98 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 15.97 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.88 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 144.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -157.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 897.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.5 MB in the end (delta: 138.8 MB). Peak memory consumption was 138.8 MB. Max. memory is 11.5 GB. * Witness Printer took 29.42 ms. Allocated memory is still 1.2 GB. Free memory was 963.5 MB in the beginning and 956.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] unsigned int x = 0; [L10] unsigned int y = 1; VAL [x=0, y=1] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=1, y=2] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=2, y=4] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=3, y=8] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=4, y=16] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=5, y=32] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=6, y=64] [L11] COND FALSE !(x < 6) VAL [x=6, y=64] [L15] CALL __VERIFIER_assert(y != 64) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 0 SDslu, 150 SDs, 0 SdLazy, 127 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 4835 SizeOfPredicates, 5 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...