./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum04_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/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 1dbb3ffac91b20f4dd3e7b4eb671e84b2870fc33 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 02:36:12,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:36:12,879 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:36:12,886 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:36:12,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:36:12,887 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:36:12,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:36:12,889 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:36:12,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:36:12,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:36:12,891 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:36:12,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:36:12,892 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:36:12,893 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:36:12,893 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:36:12,894 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:36:12,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:36:12,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:36:12,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:36:12,899 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:36:12,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:36:12,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:36:12,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:36:12,902 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:36:12,902 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:36:12,903 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:36:12,904 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:36:12,904 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:36:12,905 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:36:12,906 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:36:12,906 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:36:12,906 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:36:12,906 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:36:12,907 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:36:12,907 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:36:12,908 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:36:12,908 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 02:36:12,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:36:12,918 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:36:12,918 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:36:12,919 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:36:12,919 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:36:12,919 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:36:12,919 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:36:12,920 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:36:12,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:36:12,921 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:36:12,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:36:12,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:36:12,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:36:12,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:36:12,921 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:36:12,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:36:12,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:36:12,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:36:12,922 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:36:12,922 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:36:12,923 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:36:12,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:36:12,924 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_f4ed1269-9d02-4189-bd06-99fd69222355/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 -> 1dbb3ffac91b20f4dd3e7b4eb671e84b2870fc33 [2018-11-23 02:36:12,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:36:12,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:36:12,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:36:12,962 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:36:12,962 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:36:12,962 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/../../sv-benchmarks/c/loops/sum04_true-unreach-call_true-termination.i [2018-11-23 02:36:13,005 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/data/0db1c2206/7192656eade84253871cc79b65aec1a8/FLAG445f8c492 [2018-11-23 02:36:13,335 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:36:13,335 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/sv-benchmarks/c/loops/sum04_true-unreach-call_true-termination.i [2018-11-23 02:36:13,339 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/data/0db1c2206/7192656eade84253871cc79b65aec1a8/FLAG445f8c492 [2018-11-23 02:36:13,767 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/data/0db1c2206/7192656eade84253871cc79b65aec1a8 [2018-11-23 02:36:13,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:36:13,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:36:13,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:36:13,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:36:13,773 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:36:13,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468ecb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13, skipping insertion in model container [2018-11-23 02:36:13,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:36:13,791 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:36:13,885 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:36:13,888 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:36:13,896 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:36:13,904 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:36:13,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13 WrapperNode [2018-11-23 02:36:13,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:36:13,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:36:13,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:36:13,905 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:36:13,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:36:13,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:36:13,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:36:13,917 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:36:13,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... [2018-11-23 02:36:13,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:36:13,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:36:13,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:36:13,929 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:36:13,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:36:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:36:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:36:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:36:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:36:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:36:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:36:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 02:36:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 02:36:14,111 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:36:14,111 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 02:36:14,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:14 BoogieIcfgContainer [2018-11-23 02:36:14,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:36:14,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:36:14,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:36:14,115 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:36:14,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:36:13" (1/3) ... [2018-11-23 02:36:14,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c41e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:14, skipping insertion in model container [2018-11-23 02:36:14,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:13" (2/3) ... [2018-11-23 02:36:14,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c41e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:14, skipping insertion in model container [2018-11-23 02:36:14,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:14" (3/3) ... [2018-11-23 02:36:14,118 INFO L112 eAbstractionObserver]: Analyzing ICFG sum04_true-unreach-call_true-termination.i [2018-11-23 02:36:14,126 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:36:14,131 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:36:14,144 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:36:14,168 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:36:14,168 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:36:14,169 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:36:14,169 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:36:14,169 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:36:14,169 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:36:14,169 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:36:14,169 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:36:14,169 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:36:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 02:36:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:36:14,188 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,189 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,190 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,194 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-23 02:36:14,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:14,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:36:14,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:36:14,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 02:36:14,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 02:36:14,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 02:36:14,269 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-23 02:36:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,281 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-23 02:36:14,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 02:36:14,282 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-23 02:36:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,286 INFO L225 Difference]: With dead ends: 29 [2018-11-23 02:36:14,287 INFO L226 Difference]: Without dead ends: 12 [2018-11-23 02:36:14,289 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 [2018-11-23 02:36:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-23 02:36:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 02:36:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 02:36:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-23 02:36:14,314 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-23 02:36:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,314 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-23 02:36:14,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 02:36:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-23 02:36:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 02:36:14,315 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,315 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,315 INFO L82 PathProgramCache]: Analyzing trace with hash -15914692, now seen corresponding path program 1 times [2018-11-23 02:36:14,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:36:14,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:36:14,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 02:36:14,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 02:36:14,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 02:36:14,349 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-23 02:36:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,358 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-23 02:36:14,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 02:36:14,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-23 02:36:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,359 INFO L225 Difference]: With dead ends: 19 [2018-11-23 02:36:14,359 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 02:36:14,360 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 [2018-11-23 02:36:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 02:36:14,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-23 02:36:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 02:36:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-23 02:36:14,362 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-23 02:36:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,363 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-23 02:36:14,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 02:36:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-23 02:36:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 02:36:14,363 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,363 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,363 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1244203718, now seen corresponding path program 1 times [2018-11-23 02:36:14,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:14,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:14,399 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:14,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:14,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-23 02:36:14,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 02:36:14,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:36:14,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:36:14,446 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-11-23 02:36:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,475 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-23 02:36:14,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 02:36:14,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-23 02:36:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,476 INFO L225 Difference]: With dead ends: 21 [2018-11-23 02:36:14,476 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 02:36:14,476 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:36:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 02:36:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-11-23 02:36:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 02:36:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-23 02:36:14,479 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-23 02:36:14,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,479 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-23 02:36:14,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 02:36:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-23 02:36:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 02:36:14,480 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,480 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,480 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,480 INFO L82 PathProgramCache]: Analyzing trace with hash -513951304, now seen corresponding path program 2 times [2018-11-23 02:36:14,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:14,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:14,517 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:14,523 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:36:14,536 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:36:14,537 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:36:14,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:14,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-23 02:36:14,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:36:14,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:36:14,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:36:14,558 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-11-23 02:36:14,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,571 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-23 02:36:14,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:36:14,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-23 02:36:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,571 INFO L225 Difference]: With dead ends: 23 [2018-11-23 02:36:14,571 INFO L226 Difference]: Without dead ends: 18 [2018-11-23 02:36:14,572 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:36:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-23 02:36:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-23 02:36:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 02:36:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-23 02:36:14,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-23 02:36:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,574 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-23 02:36:14,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:36:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-23 02:36:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 02:36:14,574 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,574 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,575 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1178949302, now seen corresponding path program 3 times [2018-11-23 02:36:14,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:36:14,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:14,611 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:14,626 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:36:14,643 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 02:36:14,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:36:14,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:14,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 02:36:14,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 02:36:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 02:36:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:36:14,664 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2018-11-23 02:36:14,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,679 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-23 02:36:14,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 02:36:14,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-23 02:36:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,679 INFO L225 Difference]: With dead ends: 25 [2018-11-23 02:36:14,680 INFO L226 Difference]: Without dead ends: 20 [2018-11-23 02:36:14,680 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:36:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-23 02:36:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-23 02:36:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 02:36:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-23 02:36:14,683 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-11-23 02:36:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,683 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-23 02:36:14,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 02:36:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-23 02:36:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 02:36:14,684 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,684 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,684 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 263826484, now seen corresponding path program 4 times [2018-11-23 02:36:14,684 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:36:14,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:14,725 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:14,733 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:36:14,739 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:36:14,739 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:36:14,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:14,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 02:36:14,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 02:36:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:36:14,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:36:14,761 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2018-11-23 02:36:14,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,783 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-23 02:36:14,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:36:14,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-11-23 02:36:14,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,784 INFO L225 Difference]: With dead ends: 27 [2018-11-23 02:36:14,784 INFO L226 Difference]: Without dead ends: 22 [2018-11-23 02:36:14,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:36:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-23 02:36:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-23 02:36:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 02:36:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-23 02:36:14,786 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-11-23 02:36:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,786 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-23 02:36:14,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 02:36:14,786 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-23 02:36:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 02:36:14,787 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,787 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,787 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1299094066, now seen corresponding path program 5 times [2018-11-23 02:36:14,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:36:14,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:14,844 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:14,857 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:36:14,868 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-23 02:36:14,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:36:14,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:14,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-23 02:36:14,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 02:36:14,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 02:36:14,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:36:14,890 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2018-11-23 02:36:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:14,913 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-23 02:36:14,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:36:14,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-23 02:36:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:14,914 INFO L225 Difference]: With dead ends: 29 [2018-11-23 02:36:14,914 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 02:36:14,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-23 02:36:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 02:36:14,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-23 02:36:14,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 02:36:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-23 02:36:14,917 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-11-23 02:36:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:14,918 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-23 02:36:14,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 02:36:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-23 02:36:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 02:36:14,918 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:14,919 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:14,919 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:14,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:14,919 INFO L82 PathProgramCache]: Analyzing trace with hash -241172304, now seen corresponding path program 6 times [2018-11-23 02:36:14,919 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:14,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:14,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:36:14,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:14,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:14,995 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:15,013 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 02:36:15,025 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-23 02:36:15,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:36:15,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:15,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:15,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-23 02:36:15,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 02:36:15,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 02:36:15,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-23 02:36:15,048 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2018-11-23 02:36:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:15,064 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-23 02:36:15,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 02:36:15,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-23 02:36:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:15,065 INFO L225 Difference]: With dead ends: 31 [2018-11-23 02:36:15,065 INFO L226 Difference]: Without dead ends: 26 [2018-11-23 02:36:15,066 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-23 02:36:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-23 02:36:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-23 02:36:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-23 02:36:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-23 02:36:15,069 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-11-23 02:36:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:15,069 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-23 02:36:15,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 02:36:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-23 02:36:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 02:36:15,070 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:15,070 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:15,070 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:15,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1326563246, now seen corresponding path program 7 times [2018-11-23 02:36:15,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:15,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:15,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:36:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:15,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:15,144 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:15,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:15,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:15,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:15,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-23 02:36:15,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 02:36:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 02:36:15,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 02:36:15,179 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2018-11-23 02:36:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:15,202 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-23 02:36:15,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 02:36:15,202 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-11-23 02:36:15,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:15,203 INFO L225 Difference]: With dead ends: 32 [2018-11-23 02:36:15,203 INFO L226 Difference]: Without dead ends: 27 [2018-11-23 02:36:15,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 02:36:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-23 02:36:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-23 02:36:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 02:36:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-23 02:36:15,207 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-11-23 02:36:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:15,207 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-23 02:36:15,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 02:36:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-23 02:36:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 02:36:15,208 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:15,208 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:15,208 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:15,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:15,209 INFO L82 PathProgramCache]: Analyzing trace with hash 386905900, now seen corresponding path program 8 times [2018-11-23 02:36:15,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:15,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:15,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:15,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:36:15,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:15,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:36:15,374 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:36:15,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 02:36:15,390 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 02:36:15,390 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:36:15,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:36:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:15,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:36:15,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-23 02:36:15,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 02:36:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 02:36:15,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-23 02:36:15,451 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states. [2018-11-23 02:36:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:15,520 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-23 02:36:15,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 02:36:15,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-11-23 02:36:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:15,521 INFO L225 Difference]: With dead ends: 34 [2018-11-23 02:36:15,521 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 02:36:15,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-11-23 02:36:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 02:36:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-23 02:36:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 02:36:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-23 02:36:15,525 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-11-23 02:36:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:15,526 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-23 02:36:15,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 02:36:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-23 02:36:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-23 02:36:15,526 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:36:15,526 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:36:15,527 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:36:15,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:36:15,527 INFO L82 PathProgramCache]: Analyzing trace with hash -680671446, now seen corresponding path program 9 times [2018-11-23 02:36:15,527 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:36:15,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:36:15,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:15,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:36:15,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:36:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:36:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:36:15,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:36:15,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-23 02:36:15,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 02:36:15,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 02:36:15,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:36:15,595 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2018-11-23 02:36:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:36:15,627 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-23 02:36:15,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 02:36:15,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-11-23 02:36:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:36:15,628 INFO L225 Difference]: With dead ends: 29 [2018-11-23 02:36:15,628 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:36:15,628 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-23 02:36:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:36:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:36:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:36:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:36:15,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-11-23 02:36:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:36:15,630 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:36:15,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 02:36:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:36:15,630 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:36:15,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:36:15,702 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 02:36:15,702 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:36:15,702 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:36:15,702 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:36:15,702 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:36:15,702 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:36:15,702 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-23 02:36:15,702 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-23 02:36:15,702 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 17) no Hoare annotation was computed. [2018-11-23 02:36:15,703 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-11-23 02:36:15,703 INFO L444 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: (or (and (<= 10 main_~sn~0) (<= 6 main_~i~0) (<= main_~i~0 6) (<= main_~sn~0 10)) (and (<= 1 main_~i~0) (<= main_~i~0 1) (<= main_~sn~0 0) (<= 0 main_~sn~0)) (and (<= 2 main_~i~0) (<= main_~i~0 2) (<= main_~sn~0 2) (<= 2 main_~sn~0)) (and (<= 7 main_~i~0) (<= 12 main_~sn~0) (<= main_~sn~0 12) (<= main_~i~0 7)) (and (<= 6 main_~sn~0) (<= main_~sn~0 6) (<= 4 main_~i~0) (<= main_~i~0 4)) (and (<= 9 main_~i~0) (<= main_~sn~0 16) (< 15 main_~sn~0)) (and (<= main_~i~0 3) (<= main_~sn~0 4) (<= 3 main_~i~0) (<= 4 main_~sn~0)) (and (<= 14 main_~sn~0) (<= 8 main_~i~0) (<= main_~i~0 8) (<= main_~sn~0 14)) (and (<= main_~sn~0 8) (<= 5 main_~i~0) (<= main_~i~0 5) (<= 8 main_~sn~0))) [2018-11-23 02:36:15,703 INFO L444 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: (and (<= main_~sn~0 16) (< 15 main_~sn~0)) [2018-11-23 02:36:15,703 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 02:36:15,703 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 02:36:15,706 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 02:36:15,706 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 02:36:15,706 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 02:36:15,706 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 02:36:15,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:36:15 BoogieIcfgContainer [2018-11-23 02:36:15,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:36:15,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:36:15,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:36:15,718 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:36:15,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:14" (3/4) ... [2018-11-23 02:36:15,720 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:36:15,724 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:36:15,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:36:15,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 02:36:15,727 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 02:36:15,727 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-23 02:36:15,727 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:36:15,756 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f4ed1269-9d02-4189-bd06-99fd69222355/bin-2019/uautomizer/witness.graphml [2018-11-23 02:36:15,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:36:15,757 INFO L168 Benchmark]: Toolchain (without parser) took 1987.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 959.1 MB in the beginning and 849.1 MB in the end (delta: 110.1 MB). Peak memory consumption was 228.6 MB. Max. memory is 11.5 GB. [2018-11-23 02:36:15,758 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:36:15,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.10 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:36:15,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.94 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:36:15,758 INFO L168 Benchmark]: Boogie Preprocessor took 11.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:36:15,759 INFO L168 Benchmark]: RCFGBuilder took 182.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-11-23 02:36:15,759 INFO L168 Benchmark]: TraceAbstraction took 1605.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 852.5 MB in the end (delta: 250.4 MB). Peak memory consumption was 250.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:36:15,760 INFO L168 Benchmark]: Witness Printer took 38.48 ms. Allocated memory is still 1.1 GB. Free memory was 852.5 MB in the beginning and 849.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:36:15,762 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.10 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.94 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 182.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -160.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1605.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 852.5 MB in the end (delta: 250.4 MB). Peak memory consumption was 250.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.48 ms. Allocated memory is still 1.1 GB. Free memory was 852.5 MB in the beginning and 849.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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: 13]: Loop Invariant Derived loop invariant: ((((((((((10 <= sn && 6 <= i) && i <= 6) && sn <= 10) || (((1 <= i && i <= 1) && sn <= 0) && 0 <= sn)) || (((2 <= i && i <= 2) && sn <= 2) && 2 <= sn)) || (((7 <= i && 12 <= sn) && sn <= 12) && i <= 7)) || (((6 <= sn && sn <= 6) && 4 <= i) && i <= 4)) || ((9 <= i && sn <= 16) && 15 < sn)) || (((i <= 3 && sn <= 4) && 3 <= i) && 4 <= sn)) || (((14 <= sn && 8 <= i) && i <= 8) && sn <= 14)) || (((sn <= 8 && 5 <= i) && i <= 5) && 8 <= sn) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 11 OverallIterations, 9 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 120 SDtfs, 37 SDslu, 400 SDs, 0 SdLazy, 273 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 163 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=10, 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, 11 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 17 PreInvPairs, 27 NumberOfFragments, 127 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 352 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 17679 SizeOfPredicates, 8 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 81/489 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...