./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.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_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 269d8c78f03cf287c7b740c1cbaca497af69bf0a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:47:43,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:47:43,203 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:47:43,211 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:47:43,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:47:43,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:47:43,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:47:43,214 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:47:43,215 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:47:43,215 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:47:43,216 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:47:43,216 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:47:43,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:47:43,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:47:43,218 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:47:43,219 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:47:43,219 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:47:43,221 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:47:43,222 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:47:43,223 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:47:43,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:47:43,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:47:43,226 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:47:43,226 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:47:43,226 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:47:43,227 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:47:43,227 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:47:43,228 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:47:43,229 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:47:43,229 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:47:43,229 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:47:43,230 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:47:43,230 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:47:43,230 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:47:43,231 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:47:43,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:47:43,231 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 22:47:43,241 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:47:43,241 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:47:43,242 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 22:47:43,242 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 22:47:43,242 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 22:47:43,242 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 22:47:43,242 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 22:47:43,242 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 22:47:43,242 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 22:47:43,243 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 22:47:43,243 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 22:47:43,243 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 22:47:43,243 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 22:47:43,243 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:47:43,243 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 22:47:43,244 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:47:43,245 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:47:43,245 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 22:47:43,245 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:47:43,245 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:47:43,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 22:47:43,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 22:47:43,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:47:43,246 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 22:47:43,246 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 269d8c78f03cf287c7b740c1cbaca497af69bf0a [2018-11-22 22:47:43,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:47:43,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:47:43,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:47:43,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:47:43,285 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:47:43,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-22 22:47:43,323 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/data/e80647120/e16d0ea89733421692f674c271278644/FLAGad2296e8a [2018-11-22 22:47:43,744 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:47:43,744 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/sv-benchmarks/c/array-multidimensional/copy-partial-3-u_true-unreach-call.i [2018-11-22 22:47:43,748 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/data/e80647120/e16d0ea89733421692f674c271278644/FLAGad2296e8a [2018-11-22 22:47:43,760 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/data/e80647120/e16d0ea89733421692f674c271278644 [2018-11-22 22:47:43,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:47:43,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:47:43,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:47:43,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:47:43,766 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:47:43,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f375ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43, skipping insertion in model container [2018-11-22 22:47:43,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:47:43,787 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:47:43,902 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:47:43,904 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:47:43,920 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:47:43,931 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:47:43,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43 WrapperNode [2018-11-22 22:47:43,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:47:43,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:47:43,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:47:43,932 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:47:43,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:47:43,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:47:43,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:47:43,982 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:47:43,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:43,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:44,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:44,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... [2018-11-22 22:47:44,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:47:44,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:47:44,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:47:44,006 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:47:44,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 22:47:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 22:47:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 22:47:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 22:47:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 22:47:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:47:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:47:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 22:47:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 22:47:44,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 22:47:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 22:47:44,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 22:47:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 22:47:44,194 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:47:44,195 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-11-22 22:47:44,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:47:44 BoogieIcfgContainer [2018-11-22 22:47:44,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:47:44,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 22:47:44,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 22:47:44,197 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 22:47:44,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:47:43" (1/3) ... [2018-11-22 22:47:44,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e2522e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:47:44, skipping insertion in model container [2018-11-22 22:47:44,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:47:43" (2/3) ... [2018-11-22 22:47:44,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e2522e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:47:44, skipping insertion in model container [2018-11-22 22:47:44,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:47:44" (3/3) ... [2018-11-22 22:47:44,200 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u_true-unreach-call.i [2018-11-22 22:47:44,207 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 22:47:44,211 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 22:47:44,220 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 22:47:44,241 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 22:47:44,241 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 22:47:44,241 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 22:47:44,241 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:47:44,241 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:47:44,241 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 22:47:44,241 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:47:44,242 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 22:47:44,255 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-22 22:47:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-22 22:47:44,259 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:44,259 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:44,261 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:44,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1773460249, now seen corresponding path program 1 times [2018-11-22 22:47:44,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:44,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:44,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:44,299 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:44,329 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:44,329 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:44,330 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:44,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,338 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:44,370 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-22 22:47:44,371 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-22 22:47:44,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:47:44,371 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:47:44,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,377 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 22:47:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:44,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:47:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:47:44,418 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:47:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:47:44,458 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:44,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-22 22:47:44,458 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:44,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 22:47:44,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 22:47:44,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 22:47:44,471 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-11-22 22:47:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:44,486 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2018-11-22 22:47:44,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 22:47:44,487 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-22 22:47:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:44,494 INFO L225 Difference]: With dead ends: 66 [2018-11-22 22:47:44,494 INFO L226 Difference]: Without dead ends: 31 [2018-11-22 22:47:44,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 22:47:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-22 22:47:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-22 22:47:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-22 22:47:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-11-22 22:47:44,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2018-11-22 22:47:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:44,524 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2018-11-22 22:47:44,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 22:47:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-11-22 22:47:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-22 22:47:44,525 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:44,525 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:44,525 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:44,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1763514787, now seen corresponding path program 1 times [2018-11-22 22:47:44,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:44,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:44,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:44,527 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:44,533 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:44,533 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:44,533 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:44,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,541 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:44,578 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-22 22:47:44,579 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-22 22:47:44,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:47:44,579 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/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 [2018-11-22 22:47:44,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,593 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 22:47:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:44,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:47:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:47:44,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:47:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:47:44,700 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:44,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-11-22 22:47:44,700 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:44,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 22:47:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:47:44,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:47:44,701 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 3 states. [2018-11-22 22:47:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:44,752 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2018-11-22 22:47:44,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:47:44,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-22 22:47:44,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:44,754 INFO L225 Difference]: With dead ends: 56 [2018-11-22 22:47:44,754 INFO L226 Difference]: Without dead ends: 36 [2018-11-22 22:47:44,755 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:47:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-22 22:47:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-22 22:47:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-22 22:47:44,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2018-11-22 22:47:44,759 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2018-11-22 22:47:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:44,759 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-22 22:47:44,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 22:47:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2018-11-22 22:47:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-22 22:47:44,760 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:44,760 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:44,761 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:44,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:44,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2133227694, now seen corresponding path program 1 times [2018-11-22 22:47:44,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:44,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:44,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:44,762 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:44,767 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:44,768 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:44,768 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:44,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:44,787 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:44,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-22 22:47:44,814 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [40], [44], [51], [83], [92], [101], [110], [126], [129], [131], [137], [138], [139], [141] [2018-11-22 22:47:44,843 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:47:44,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:47:44,961 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-22 22:47:44,963 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Performed 62 root evaluator evaluations with a maximum evaluation depth of 7. Performed 62 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 21 variables. [2018-11-22 22:47:44,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:44,969 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-22 22:47:45,008 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 82.42% of their original sizes. [2018-11-22 22:47:45,009 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-22 22:47:45,019 INFO L415 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2018-11-22 22:47:45,019 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-22 22:47:45,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:45,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-22 22:47:45,020 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:45,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 22:47:45,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 22:47:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:47:45,021 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2018-11-22 22:47:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:45,145 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2018-11-22 22:47:45,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 22:47:45,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-22 22:47:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:45,146 INFO L225 Difference]: With dead ends: 64 [2018-11-22 22:47:45,146 INFO L226 Difference]: Without dead ends: 39 [2018-11-22 22:47:45,146 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-22 22:47:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-22 22:47:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-11-22 22:47:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-22 22:47:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2018-11-22 22:47:45,149 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 20 [2018-11-22 22:47:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:45,150 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2018-11-22 22:47:45,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 22:47:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2018-11-22 22:47:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-22 22:47:45,150 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:45,150 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:45,151 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:45,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:45,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1108398309, now seen corresponding path program 1 times [2018-11-22 22:47:45,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:45,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:45,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:45,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:45,152 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:45,155 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:45,155 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:45,155 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:45,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:45,167 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:45,188 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-22 22:47:45,188 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [23], [30], [36], [40], [44], [51], [83], [92], [101], [110], [126], [129], [131], [137], [138], [139], [141] [2018-11-22 22:47:45,189 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:47:45,190 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:47:45,204 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-22 22:47:45,204 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 67 root evaluator evaluations with a maximum evaluation depth of 7. Performed 67 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 21 variables. [2018-11-22 22:47:45,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:45,207 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-22 22:47:45,229 INFO L227 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 75.21% of their original sizes. [2018-11-22 22:47:45,230 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-22 22:47:45,258 INFO L415 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2018-11-22 22:47:45,258 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-22 22:47:45,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:45,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 22:47:45,259 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:45,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:47:45,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:47:45,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:47:45,260 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 5 states. [2018-11-22 22:47:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:45,430 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2018-11-22 22:47:45,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:47:45,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-22 22:47:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:45,431 INFO L225 Difference]: With dead ends: 65 [2018-11-22 22:47:45,432 INFO L226 Difference]: Without dead ends: 40 [2018-11-22 22:47:45,432 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:47:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-22 22:47:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-11-22 22:47:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-22 22:47:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-11-22 22:47:45,442 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 23 [2018-11-22 22:47:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:45,442 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-22 22:47:45,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:47:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2018-11-22 22:47:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-22 22:47:45,443 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:45,443 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:45,443 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:45,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1602833213, now seen corresponding path program 1 times [2018-11-22 22:47:45,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:45,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:45,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:45,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:45,445 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:45,450 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:45,451 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:45,451 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:45,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:45,466 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:45,492 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-22 22:47:45,492 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [23], [30], [32], [36], [40], [44], [51], [83], [92], [101], [110], [126], [129], [131], [137], [138], [139], [141] [2018-11-22 22:47:45,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:47:45,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:47:45,543 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-22 22:47:45,543 INFO L272 AbstractInterpreter]: Visited 16 different actions 45 times. Merged at 7 different actions 17 times. Widened at 2 different actions 3 times. Performed 281 root evaluator evaluations with a maximum evaluation depth of 7. Performed 281 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 9 fixpoints after 5 different actions. Largest state had 22 variables. [2018-11-22 22:47:45,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:45,553 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-22 22:47:45,572 INFO L227 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 67.25% of their original sizes. [2018-11-22 22:47:45,572 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-22 22:47:45,595 INFO L415 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2018-11-22 22:47:45,595 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-22 22:47:45,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:45,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 22:47:45,596 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:45,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:47:45,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:47:45,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-22 22:47:45,597 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 5 states. [2018-11-22 22:47:45,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:45,708 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2018-11-22 22:47:45,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 22:47:45,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-22 22:47:45,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:45,710 INFO L225 Difference]: With dead ends: 64 [2018-11-22 22:47:45,710 INFO L226 Difference]: Without dead ends: 50 [2018-11-22 22:47:45,710 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:47:45,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-22 22:47:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2018-11-22 22:47:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-22 22:47:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2018-11-22 22:47:45,719 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 24 [2018-11-22 22:47:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:45,720 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-22 22:47:45,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:47:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2018-11-22 22:47:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-22 22:47:45,721 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:45,721 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:45,721 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:45,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:45,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1731508933, now seen corresponding path program 1 times [2018-11-22 22:47:45,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:45,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:45,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:45,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:45,723 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:45,727 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:45,727 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:45,727 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:45,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:45,742 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:45,775 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-22 22:47:45,776 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [23], [30], [32], [36], [40], [44], [51], [53], [60], [79], [83], [92], [101], [110], [126], [129], [131], [137], [138], [139], [141] [2018-11-22 22:47:45,777 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:47:45,777 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:47:45,816 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-22 22:47:45,816 INFO L272 AbstractInterpreter]: Visited 18 different actions 46 times. Merged at 7 different actions 16 times. Widened at 1 different actions 2 times. Performed 267 root evaluator evaluations with a maximum evaluation depth of 7. Performed 267 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 8 fixpoints after 4 different actions. Largest state had 22 variables. [2018-11-22 22:47:45,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:45,818 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-22 22:47:45,840 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 66.06% of their original sizes. [2018-11-22 22:47:45,840 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-22 22:47:45,876 INFO L415 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2018-11-22 22:47:45,876 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-22 22:47:45,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:45,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-22 22:47:45,876 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:45,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 22:47:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 22:47:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-22 22:47:45,877 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 6 states. [2018-11-22 22:47:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:46,099 INFO L93 Difference]: Finished difference Result 79 states and 105 transitions. [2018-11-22 22:47:46,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:47:46,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-11-22 22:47:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:46,100 INFO L225 Difference]: With dead ends: 79 [2018-11-22 22:47:46,100 INFO L226 Difference]: Without dead ends: 60 [2018-11-22 22:47:46,100 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-22 22:47:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-22 22:47:46,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2018-11-22 22:47:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-22 22:47:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-22 22:47:46,105 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 27 [2018-11-22 22:47:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:46,105 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-22 22:47:46,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 22:47:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-22 22:47:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 22:47:46,108 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:46,109 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:46,113 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:46,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1582523873, now seen corresponding path program 1 times [2018-11-22 22:47:46,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:46,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:46,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:46,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:46,114 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:46,118 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:46,118 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:46,118 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:46,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:46,138 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:46,159 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-11-22 22:47:46,159 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [23], [30], [32], [36], [40], [44], [51], [53], [60], [62], [69], [75], [79], [83], [92], [101], [110], [126], [129], [131], [137], [138], [139], [141] [2018-11-22 22:47:46,160 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:47:46,160 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:47:46,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-22 22:47:46,186 INFO L272 AbstractInterpreter]: Visited 20 different actions 51 times. Merged at 7 different actions 18 times. Widened at 2 different actions 3 times. Performed 298 root evaluator evaluations with a maximum evaluation depth of 7. Performed 298 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 9 fixpoints after 5 different actions. Largest state had 22 variables. [2018-11-22 22:47:46,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:46,188 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-22 22:47:46,202 INFO L227 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 64.27% of their original sizes. [2018-11-22 22:47:46,202 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-22 22:47:46,220 INFO L415 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2018-11-22 22:47:46,220 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-22 22:47:46,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:46,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-22 22:47:46,220 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:46,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 22:47:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 22:47:46,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-22 22:47:46,221 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 7 states. [2018-11-22 22:47:46,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:46,381 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2018-11-22 22:47:46,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 22:47:46,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-11-22 22:47:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:46,382 INFO L225 Difference]: With dead ends: 85 [2018-11-22 22:47:46,382 INFO L226 Difference]: Without dead ends: 64 [2018-11-22 22:47:46,383 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-22 22:47:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-22 22:47:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 40. [2018-11-22 22:47:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-22 22:47:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-22 22:47:46,390 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-11-22 22:47:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:46,391 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-22 22:47:46,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 22:47:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-22 22:47:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-22 22:47:46,392 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:46,392 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:46,392 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:46,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:46,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1700768458, now seen corresponding path program 1 times [2018-11-22 22:47:46,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:46,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:46,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:46,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:46,393 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:46,400 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:46,400 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:46,400 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:46,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:46,416 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:46,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2018-11-22 22:47:46,450 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [21], [23], [30], [32], [36], [40], [44], [51], [53], [60], [62], [69], [71], [75], [79], [83], [92], [101], [110], [126], [129], [131], [137], [138], [139], [141] [2018-11-22 22:47:46,451 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 22:47:46,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 22:47:46,502 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-22 22:47:46,502 INFO L272 AbstractInterpreter]: Visited 31 different actions 90 times. Merged at 14 different actions 34 times. Widened at 3 different actions 5 times. Performed 478 root evaluator evaluations with a maximum evaluation depth of 7. Performed 478 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 17 fixpoints after 9 different actions. Largest state had 23 variables. [2018-11-22 22:47:46,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:46,509 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-22 22:47:46,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:47:46,509 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:47:46,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:46,524 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 22:47:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:46,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:47:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-22 22:47:46,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:47:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-22 22:47:46,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:47:46,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-22 22:47:46,621 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-22 22:47:46,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 22:47:46,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 22:47:46,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-11-22 22:47:46,621 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 8 states. [2018-11-22 22:47:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:46,720 INFO L93 Difference]: Finished difference Result 115 states and 155 transitions. [2018-11-22 22:47:46,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 22:47:46,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-22 22:47:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:46,722 INFO L225 Difference]: With dead ends: 115 [2018-11-22 22:47:46,722 INFO L226 Difference]: Without dead ends: 84 [2018-11-22 22:47:46,722 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2018-11-22 22:47:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-22 22:47:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 46. [2018-11-22 22:47:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-22 22:47:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-11-22 22:47:46,731 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 31 [2018-11-22 22:47:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:46,732 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-11-22 22:47:46,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 22:47:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-11-22 22:47:46,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-22 22:47:46,732 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 22:47:46,732 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:47:46,733 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 22:47:46,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:47:46,733 INFO L82 PathProgramCache]: Analyzing trace with hash -119527047, now seen corresponding path program 2 times [2018-11-22 22:47:46,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 22:47:46,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:46,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:47:46,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:47:46,734 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 22:47:46,740 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-22 22:47:46,740 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-22 22:47:46,740 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-22 22:47:46,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:47:46,758 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-22 22:47:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:47:46,781 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-22 22:47:46,781 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-22 22:47:46,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:47:46,782 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:47:46,789 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-22 22:47:46,789 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-22 22:47:46,803 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-22 22:47:46,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 22:47:46,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:47:46,829 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2018-11-22 22:47:46,837 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 3 [2018-11-22 22:47:46,837 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 22:47:46,845 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:47:46,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 22:47:46,846 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:51, output treesize:3 [2018-11-22 22:47:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-22 22:47:46,863 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 22:47:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-22 22:47:46,896 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:47:46,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-11-22 22:47:46,896 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 22:47:46,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 22:47:46,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 22:47:46,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-22 22:47:46,897 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2018-11-22 22:47:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:47:46,910 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-11-22 22:47:46,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 22:47:46,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-11-22 22:47:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 22:47:46,911 INFO L225 Difference]: With dead ends: 46 [2018-11-22 22:47:46,911 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 22:47:46,912 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-22 22:47:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 22:47:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 22:47:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 22:47:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 22:47:46,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-11-22 22:47:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 22:47:46,913 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:47:46,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 22:47:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 22:47:46,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 22:47:46,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 22:47:47,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-22 22:47:47,255 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-22 22:47:47,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 22:47:47,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 22:47:47,255 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 22:47:47,255 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 22:47:47,255 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 22:47:47,255 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 81) no Hoare annotation was computed. [2018-11-22 22:47:47,256 INFO L444 ceAbstractionStarter]: At program point L52-2(lines 52 55) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,256 INFO L448 ceAbstractionStarter]: For program point L52-3(lines 52 55) no Hoare annotation was computed. [2018-11-22 22:47:47,256 INFO L444 ceAbstractionStarter]: At program point L70-2(lines 70 77) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,256 INFO L448 ceAbstractionStarter]: For program point L70-3(lines 70 77) no Hoare annotation was computed. [2018-11-22 22:47:47,256 INFO L444 ceAbstractionStarter]: At program point L29-2(lines 29 36) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,256 INFO L448 ceAbstractionStarter]: For program point L29-3(lines 29 36) no Hoare annotation was computed. [2018-11-22 22:47:47,256 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 81) no Hoare annotation was computed. [2018-11-22 22:47:47,256 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 81) the Hoare annotation is: true [2018-11-22 22:47:47,257 INFO L444 ceAbstractionStarter]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,257 INFO L448 ceAbstractionStarter]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2018-11-22 22:47:47,257 INFO L444 ceAbstractionStarter]: At program point L72-2(lines 72 75) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,257 INFO L448 ceAbstractionStarter]: For program point L72-3(lines 72 75) no Hoare annotation was computed. [2018-11-22 22:47:47,257 INFO L444 ceAbstractionStarter]: At program point L31-2(lines 31 34) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,257 INFO L448 ceAbstractionStarter]: For program point L31-3(lines 31 34) no Hoare annotation was computed. [2018-11-22 22:47:47,257 INFO L444 ceAbstractionStarter]: At program point L73(line 73) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0) (= |main_#t~mem4| |main_#t~mem3|)) [2018-11-22 22:47:47,257 INFO L448 ceAbstractionStarter]: For program point L73-1(line 73) no Hoare annotation was computed. [2018-11-22 22:47:47,257 INFO L444 ceAbstractionStarter]: At program point L50-2(lines 50 57) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point L50-3(lines 50 57) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L444 ceAbstractionStarter]: At program point L67-2(lines 67 79) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point L67-3(lines 67 79) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 26 38) the Hoare annotation is: (and (= main_~n~0 1000) (not (= |main_~#A~0.base| 0)) (not (= |main_~#B~0.base| 0)) (= |main_~#B~0.offset| 0) (= main_~p~0 500) (= |main_~#A~0.offset| 0)) [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point L26-3(lines 26 38) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-22 22:47:47,258 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-22 22:47:47,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:47:47 BoogieIcfgContainer [2018-11-22 22:47:47,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 22:47:47,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:47:47,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:47:47,276 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:47:47,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:47:44" (3/4) ... [2018-11-22 22:47:47,282 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 22:47:47,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 22:47:47,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 22:47:47,288 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-22 22:47:47,292 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-22 22:47:47,293 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-22 22:47:47,293 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 22:47:47,293 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 22:47:47,338 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dd8a3866-30f6-45be-8a58-030282181e2c/bin-2019/utaipan/witness.graphml [2018-11-22 22:47:47,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:47:47,339 INFO L168 Benchmark]: Toolchain (without parser) took 3577.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 959.1 MB in the beginning and 887.6 MB in the end (delta: 71.5 MB). Peak memory consumption was 222.5 MB. Max. memory is 11.5 GB. [2018-11-22 22:47:47,341 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-22 22:47:47,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.94 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-22 22:47:47,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-22 22:47:47,342 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:47:47,342 INFO L168 Benchmark]: RCFGBuilder took 189.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:47:47,342 INFO L168 Benchmark]: TraceAbstraction took 3079.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 890.9 MB in the end (delta: 238.0 MB). Peak memory consumption was 238.0 MB. Max. memory is 11.5 GB. [2018-11-22 22:47:47,343 INFO L168 Benchmark]: Witness Printer took 63.02 ms. Allocated memory is still 1.2 GB. Free memory was 890.9 MB in the beginning and 887.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-22 22:47:47,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 167.94 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -202.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 189.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3079.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 890.9 MB in the end (delta: 238.0 MB). Peak memory consumption was 238.0 MB. Max. memory is 11.5 GB. * Witness Printer took 63.02 ms. Allocated memory is still 1.2 GB. Free memory was 890.9 MB in the beginning and 887.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((((n == 1000 && !(A == 0)) && !(B == 0)) && B == 0) && p == 500) && A == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 266 SDtfs, 384 SDslu, 292 SDs, 0 SdLazy, 114 SolverSat, 190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 328 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.8838720103425985 AbsIntWeakeningRatio, 1.1680672268907564 AbsIntAvgWeakeningVarsNumRemoved, 2.5210084033613445 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 115 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 23 PreInvPairs, 48 NumberOfFragments, 219 HoareAnnotationTreeSize, 23 FomulaSimplifications, 18891 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 533 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 328 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 6828 SizeOfPredicates, 20 NumberOfNonLiveVariables, 382 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 58/60 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...